The D4 Carbon helmet is the latest in the legendary Troy Lee Designs Daytona series. The D4 Carbon builds on the success of the best full face helmets ever to be the most advanced downhill, freeride, and BMX helmet going. It is sure to continue the legend and pro success of Troy Lee Designs D3 and is the go-to for anyone seeking the very best.The D4 Carbon helmet has a TeXtreme carbon fibre shell. The carbon has a spread tow construction that uses straighter fibres than standard carbon fibre. This results in a thinner laminate that reduces weight while achieving a greater rigidness, increased strength, and improved impact tolerance.The MIPS Brain Protection System in the D4 means the Troy Lee helmet delivers ultimate protection. MIPS is a layer in the helmet that allows the head to slide relative to the helmet. This reduces any rotational movement that would affect the brain.A collarbone suspension system improves safety by directing pressure away from the collarbone in case of any tumbles.As a result, The D4 has the most protective energy system Troy Lee Designs has ever given its riders. The new full face mtb helmet is certified to CPSC 1203, CE EN1078, ASTM F1952 (DH), and ASTM 2032 (BMX) safety standards.Top protection, badass looks, and a pedigree that no one can touch. The D4 is set to continue Troy Lee Design’s legacy for years to come.Key Features:TeXtreme® Spread tow carbon fibre shell,MIPS Brain Protection System,Ventilation channels and headliner promote airflow,Lightweight titanium D-rings and hardware,Collarbone suspension system,Break-away visor screws,Quick release XT2 3D cheek pads and X-static/XT2 washable liner,Includes TLD drawstring helmet bag,1000g.
Troy Lee Designs D4 Carbon Stealth HelmetTroy Lee Designs have yet again pushed the boundaries of mountain bike protection with their superb D4 Carbon Stealth Helmet. Sleek TLD style, outstanding comfort and the inclusion of the very latest impact-absorbing technologies create a helmet with unrivalled performance on the trail. If you're charging downhill, ripping up gnarly trails and going big off the biggest booters then things won't always go smoothly or to plan. For those times when you hit the ground after casing the landing, push grip too far or get your line wrong the D4 Carbon Stealth Helmet ensures you can get up, dust yourself off and keep riding. Carbon ShellIt starts with the TeXtreme® Spread tow carbon fibre shell, giving the D4 incredible strength while keeping weight to the minimum. This shell covers the EPS foam shock-absorbing core - if you hit your head it's this core that will absorb the forces and protect your head from the impact. To boost strength and durability Troy Lee also uses In-mould polycarbonate around vent openings and exposed EPS, making this a lid you can use day after day without fear. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention - more on that below.AirflowVentilation is also fabulously realised. The outer vents bring in fresh, cooling air and this is allowed to circulate easily thanks to carefully designed channels and integration with the headliner. It's like a turbo-charger for your head.XT2 ComfortSpeaking of the liner, this is the XT2 washable design. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride. Fresh, lightweight and cool mountain biking is now here for you to enjoy, even in a fully-featured full-face helmet.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Features:TeXtreme® Spread tow carbon fibre shellFeaturing MIPS® Brain Protection System - a helmet integrated, low friction layer designed to reduce rotational motion transferred to the brain from angled impacts to the headVentilation channels work in unison with the headliner to promote airflow through the helmetLightweight titanium D-rings and hardwareCollarbone suspension systemInnovative break-away visor screws help reduce the likelihood snagging during a crashQuick Release XT2 3D cheek pads and X-Static/ XT2 washable liner create an optimized fitPlush helmet bag included1000 gramsCPSC 1203, EN1078, ASTM F1952 - DH, ASTM 2032 – BMXShop all MIPS helmets - Click hereBuy Troy Lee Designs from Chain Reaction Cycles, the World's Largest Online Bike Store.
Troy Lee Designs D4 Carbon Stealth HelmetTroy Lee Designs have yet again pushed the boundaries of mountain bike protection with their superb D4 Carbon Stealth Helmet. Sleek TLD style, outstanding comfort and the inclusion of the very latest impact-absorbing technologies create a helmet with unrivalled performance on the trail. If you're charging downhill, ripping up gnarly trails and going big off the biggest booters then things won't always go smoothly or to plan. For those times when you hit the ground after casing the landing, push grip too far or get your line wrong the D4 Carbon Stealth Helmet ensures you can get up, dust yourself off and keep riding. Carbon ShellIt starts with the TeXtreme® Spread tow carbon fibre shell, giving the D4 incredible strength while keeping weight to the minimum. This shell covers the EPS foam shock-absorbing core - if you hit your head it's this core that will absorb the forces and protect your head from the impact. To boost strength and durability Troy Lee also uses In-mould polycarbonate around vent openings and exposed EPS, making this a lid you can use day after day without fear. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention - more on that below.AirflowVentilation is also fabulously realised. The outer vents bring in fresh, cooling air and this is allowed to circulate easily thanks to carefully designed channels and integration with the headliner. It's like a turbo-charger for your head.XT2 ComfortSpeaking of the liner, this is the XT2 washable design. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride. Fresh, lightweight and cool mountain biking is now here for you to enjoy, even in a fully-featured full-face helmet.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Features:TeXtreme® Spread tow carbon fibre shellFeaturing MIPS® Brain Protection System - a helmet integrated, low friction layer designed to reduce rotational motion transferred to the brain from angled impacts to the headVentilation channels work in unison with the headliner to promote airflow through the helmetLightweight titanium D-rings and hardwareCollarbone suspension systemInnovative break-away visor screws help reduce the likelihood snagging during a crashQuick Release XT2 3D cheek pads and X-Static/ XT2 washable liner create an optimized fitPlush helmet bag included1000 gramsCPSC 1203, EN1078, ASTM F1952 - DH, ASTM 2032 – BMXShop all MIPS helmets - Click hereBuy Troy Lee Designs from Chain Reaction Cycles, the World's Largest Online Bike Store.
Troy Lee Designs D4 Carbon Stealth HelmetTroy Lee Designs have yet again pushed the boundaries of mountain bike protection with their superb D4 Carbon Stealth Helmet. Sleek TLD style, outstanding comfort and the inclusion of the very latest impact-absorbing technologies create a helmet with unrivalled performance on the trail. If you're charging downhill, ripping up gnarly trails and going big off the biggest booters then things won't always go smoothly or to plan. For those times when you hit the ground after casing the landing, push grip too far or get your line wrong the D4 Carbon Stealth Helmet ensures you can get up, dust yourself off and keep riding. Carbon ShellIt starts with the TeXtreme® Spread tow carbon fibre shell, giving the D4 incredible strength while keeping weight to the minimum. This shell covers the EPS foam shock-absorbing core - if you hit your head it's this core that will absorb the forces and protect your head from the impact. To boost strength and durability Troy Lee also uses In-mould polycarbonate around vent openings and exposed EPS, making this a lid you can use day after day without fear. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention - more on that below.AirflowVentilation is also fabulously realised. The outer vents bring in fresh, cooling air and this is allowed to circulate easily thanks to carefully designed channels and integration with the headliner. It's like a turbo-charger for your head.XT2 ComfortSpeaking of the liner, this is the XT2 washable design. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride. Fresh, lightweight and cool mountain biking is now here for you to enjoy, even in a fully-featured full-face helmet.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Features:TeXtreme® Spread tow carbon fibre shellFeaturing MIPS® Brain Protection System - a helmet integrated, low friction layer designed to reduce rotational motion transferred to the brain from angled impacts to the headVentilation channels work in unison with the headliner to promote airflow through the helmetLightweight titanium D-rings and hardwareCollarbone suspension systemInnovative break-away visor screws help reduce the likelihood snagging during a crashQuick Release XT2 3D cheek pads and X-Static/ XT2 washable liner create an optimized fitPlush helmet bag included1000 gramsCPSC 1203, EN1078, ASTM F1952 - DH, ASTM 2032 – BMXShop all MIPS helmets - Click hereBuy Troy Lee Designs from Chain Reaction Cycles, the World's Largest Online Bike Store.
Troy Lee Designs D4 Carbon Stealth HelmetTroy Lee Designs have yet again pushed the boundaries of mountain bike protection with their superb D4 Carbon Stealth Helmet. Sleek TLD style, outstanding comfort and the inclusion of the very latest impact-absorbing technologies create a helmet with unrivalled performance on the trail. If you're charging downhill, ripping up gnarly trails and going big off the biggest booters then things won't always go smoothly or to plan. For those times when you hit the ground after casing the landing, push grip too far or get your line wrong the D4 Carbon Stealth Helmet ensures you can get up, dust yourself off and keep riding. Carbon ShellIt starts with the TeXtreme® Spread tow carbon fibre shell, giving the D4 incredible strength while keeping weight to the minimum. This shell covers the EPS foam shock-absorbing core - if you hit your head it's this core that will absorb the forces and protect your head from the impact. To boost strength and durability Troy Lee also uses In-mould polycarbonate around vent openings and exposed EPS, making this a lid you can use day after day without fear. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention - more on that below.AirflowVentilation is also fabulously realised. The outer vents bring in fresh, cooling air and this is allowed to circulate easily thanks to carefully designed channels and integration with the headliner. It's like a turbo-charger for your head.XT2 ComfortSpeaking of the liner, this is the XT2 washable design. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride. Fresh, lightweight and cool mountain biking is now here for you to enjoy, even in a fully-featured full-face helmet.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Features:TeXtreme® Spread tow carbon fibre shellFeaturing MIPS® Brain Protection System - a helmet integrated, low friction layer designed to reduce rotational motion transferred to the brain from angled impacts to the headVentilation channels work in unison with the headliner to promote airflow through the helmetLightweight titanium D-rings and hardwareCollarbone suspension systemInnovative break-away visor screws help reduce the likelihood snagging during a crashQuick Release XT2 3D cheek pads and X-Static/ XT2 washable liner create an optimized fitPlush helmet bag included1000 gramsCPSC 1203, EN1078, ASTM F1952 - DH, ASTM 2032 – BMXShop all MIPS helmets - Click hereBuy Troy Lee Designs from Chain Reaction Cycles, the World's Largest Online Bike Store.
Always EvolvingIt wasn't easy to improve upon the class-leading design and function of our D3 helmet, but we made it happen. Built with an aerospace shell design and materials, we were able to get the D4 Composite helmet to 1050 grams without sacrificing any strength. MIPS C2 protection system is used to add an additional layer of safety in the event of a fall. For comfort, the D4 Comp routes cooling air through a front air intake system that flows through the polymer center and power grid side mesh keeping your head cooler during the ride. X-static® and XT2® anti-microbial/anti-odor padding keep the inside of the helmet a much nicer place to be. Key Features: Intended for BMX, Downhill or All-Mountain use,Aerospace composite shell,Lightest Composite DH/BMX Race helmet we have ever built 1050g (+/- 50g and Size M),MIPS C2 brain protection system-protects against rotational impacts,24 total vents: 10 front intake ports, 5 overhead intake vents that channel air on top of your head and an industry leading 7 rear exhaust ports,3 Shell sizes and 3 EPS sizes, 6 total size ranges from XS-XXL,Anti-Microbial/Quick Dry XT2® Quick release contoured 3D cheek pads create an ,anatomically optimized fit. Separately placed X-Static® & XT2® precision fit headliner with 7 anchor points gives you optimal fit,EPP Collarbone impact system; a relief area reduces the forces in the center lower section of the helmet where shoulder/collarbone impacts have been known to occur,Drawstring helmet bag included, 3-year warranty,CERTIFIED FOR: ASTM F1952 DH MTB, ASTM F2032 BMX, CPSC 1203, CE N1078, AS/NZS 2063.
Whipping tabletops, leaning into and accelerating hard out of berms, and straight-lining a rocky and rooty chute - mountain biking is thrilling when it's all going well. It's when things don't quite go to plan where the fabulous D4 Composite Stealth Helmet comes in. Should you hit the dirt then it's there to keep your head protected and you quickly back on your bike with minimal fuss. The first line of defence is the remarkably light but tough TeXtreme® Spread tow carbon fibre shell. This wraps around an impact-absorbing EPS foam core - the forces from any crash are absorbed and dissipated by this core, offering superb protection. Durability and strength are also enhanced by the way of In-mould polycarbonate around the vent openings and exposed EPS. This is a lid up to the demands of daily mountain biking. Meanwhile, breakaway screws prevent the visor from catching on the ground and help prevent neck injuries. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention. MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head. Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head. Shop All MIPS Helmets Click Here With this level of protection and head protection, you may think ventilation is compromised. But not a bit of it. Troy Lee have carefully engineered the outer vents and inner channels to work with the headliner so fresh air is free to circulate and keep you cool. Inside the D4 you'll enjoy the brilliant XT2 washable liner. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride. Unrivalled protection, impressively lightweight but durable construction and excellent ventilation combine to make the D4 the best TLD full-face helmet yet.
The Troy Lee Designs 6400 Knee Brace is a lightweight and comfortable brace for any rider needing stability and protection for their knees.The 6400 Knee Brace has bilateral support hinges that use hyperextension stops to support and help prevent knee injury. The X-Fit Strap System prevents bunching that could limit movement and create discomfort while out on the trails. Adjustment upper and lower compression straps allow a customised fit. Thermoplastic knee pads are covered in an abrasion resistant material for durability and longevity. This brace is ideal for anyone riding mountain bike but is also usable for snowboarding, skiing, and motocross.Key Features: X-Fit Strap System, Bilateral Support hinges and impact absorbing base pads, Thermoplastic knee protection, Compression fit straps for tailored fit, Abrasion resistant kneecap, Moisture-wicking frame liners, Sold in pairs – left and right, 1-year limited warranty. .
Troy Lee Designs D4 Composite HelmetA classic of the mountain bike world, the Troy Lee Designs D4 Composite Helmet has a well-won reputation for delivering superb levels of comfort, protection and distinctive style. Pull it on and go get your mountain bike thrills in style. No matter where you get your mountain bike thrills, from weekend races on challenging downhills through to racing buddies to the bottom at the local trail centre or bike park, the D4 Composite Cycle Helmet has you covered. Confidence is given a boost thanks to its superb combination of safety features, unrivalled comfort and the usual Troy lee flair for design. Keeping weight low but protection and durability high is the aerospace-grade fibreglass composite shell. This wraps around an impact-absorbing EPS foam core - the forces from any crash are absorbed and dissipated by this core, offering outstanding crash protection. Meanwhile, breakaway screws prevent the visor from catching on the ground and help prevent neck injuries. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention - more on that below.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Uncompromised ComfortWith this level of protection and head protection, you may think ventilation is compromised. But not a bit of it. Troy Lee have carefully engineered the outer vents and inner channels to work with the headliner so fresh air is free to circulate and keep you cool.Inside the D4 you'll also enjoy the brilliant XT2 washable liner. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride.Tough, durable, protective and yet lightweight, the D4 Composite is the ideal full-face helmet for the weekend DH racer and avid mountain bike trail slayer.Features:Aerospace shell design and materials (D4 Composite)MIPS C2 brain protection systemFront air intake system with high flow through polymer centre and powergrid side meshCollarbone suspension systemBreakaway visor screwsX-static® and XT2® Anti-Microbial/anti-order paddingQuick-release contoured 3D cheek pads create an anatomically optimized fitWeight - 1050gCPSC 1203*, CE EN1078*, ASTM F1952 - DH, ASTM 2032 - BMX, *Varies by regional standardsShop all MIPS helmets - Click hereBuy Troy Lee Designs from Chain Reaction Cycles, the World's Largest Online Bike Store.
Troy Lee Designs D4 Composite HelmetA classic of the mountain bike world, the Troy Lee Designs D4 Composite Helmet has a well-won reputation for delivering superb levels of comfort, protection and distinctive style. Pull it on and go get your mountain bike thrills in style. No matter where you get your mountain bike thrills, from weekend races on challenging downhills through to racing buddies to the bottom at the local trail centre or bike park, the D4 Composite Cycle Helmet has you covered. Confidence is given a boost thanks to its superb combination of safety features, unrivalled comfort and the usual Troy lee flair for design. Keeping weight low but protection and durability high is the aerospace-grade fibreglass composite shell. This wraps around an impact-absorbing EPS foam core - the forces from any crash are absorbed and dissipated by this core, offering outstanding crash protection. Meanwhile, breakaway screws prevent the visor from catching on the ground and help prevent neck injuries. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention - more on that below.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Uncompromised ComfortWith this level of protection and head protection, you may think ventilation is compromised. But not a bit of it. Troy Lee have carefully engineered the outer vents and inner channels to work with the headliner so fresh air is free to circulate and keep you cool.Inside the D4 you'll also enjoy the brilliant XT2 washable liner. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride.Tough, durable, protective and yet lightweight, the D4 Composite is the ideal full-face helmet for the weekend DH racer and avid mountain bike trail slayer.Features:Aerospace shell design and materials (D4 Composite)MIPS C2 brain protection systemFront air intake system with high flow through polymer centre and powergrid side meshCollarbone suspension systemBreakaway visor screwsX-static® and XT2® Anti-Microbial/anti-order paddingQuick-release contoured 3D cheek pads create an anatomically optimized fitWeight - 1050gCPSC 1203*, CE EN1078*, ASTM F1952 - DH, ASTM 2032 - BMX, *Varies by regional standardsShop all MIPS helmets - Click hereBuy Troy Lee Designs from Chain Reaction Cycles, the World's Largest Online Bike Store.
Troy Lee Designs D4 Composite HelmetA classic of the mountain bike world, the Troy Lee Designs D4 Composite Helmet has a well-won reputation for delivering superb levels of comfort, protection and distinctive style. Pull it on and go get your mountain bike thrills in style. No matter where you get your mountain bike thrills, from weekend races on challenging downhills through to racing buddies to the bottom at the local trail centre or bike park, the D4 Composite Cycle Helmet has you covered. Confidence is given a boost thanks to its superb combination of safety features, unrivalled comfort and the usual Troy lee flair for design. Keeping weight low but protection and durability high is the aerospace-grade fibreglass composite shell. This wraps around an impact-absorbing EPS foam core - the forces from any crash are absorbed and dissipated by this core, offering outstanding crash protection. Meanwhile, breakaway screws prevent the visor from catching on the ground and help prevent neck injuries. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention - more on that below.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Uncompromised ComfortWith this level of protection and head protection, you may think ventilation is compromised. But not a bit of it. Troy Lee have carefully engineered the outer vents and inner channels to work with the headliner so fresh air is free to circulate and keep you cool.Inside the D4 you'll also enjoy the brilliant XT2 washable liner. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride.Tough, durable, protective and yet lightweight, the D4 Composite is the ideal full-face helmet for the weekend DH racer and avid mountain bike trail slayer.Features:Aerospace shell design and materials (D4 Composite)MIPS C2 brain protection systemFront air intake system with high flow through polymer centre and powergrid side meshCollarbone suspension systemBreakaway visor screwsX-static® and XT2® Anti-Microbial/anti-order paddingQuick-release contoured 3D cheek pads create an anatomically optimized fitWeight - 1050gCPSC 1203*, CE EN1078*, ASTM F1952 - DH, ASTM 2032 - BMX, *Varies by regional standardsShop all MIPS helmets - Click hereBuy Troy Lee Designs from Chain Reaction Cycles, the World's Largest Online Bike Store.
Troy Lee Designs D4 Composite HelmetA classic of the mountain bike world, the Troy Lee Designs D4 Composite Helmet has a well-won reputation for delivering superb levels of comfort, protection and distinctive style. Pull it on and go get your mountain bike thrills in style. No matter where you get your mountain bike thrills, from weekend races on challenging downhills through to racing buddies to the bottom at the local trail centre or bike park, the D4 Composite Cycle Helmet has you covered. Confidence is given a boost thanks to its superb combination of safety features, unrivalled comfort and the usual Troy lee flair for design. Keeping weight low but protection and durability high is the aerospace-grade fibreglass composite shell. This wraps around an impact-absorbing EPS foam core - the forces from any crash are absorbed and dissipated by this core, offering outstanding crash protection. Meanwhile, breakaway screws prevent the visor from catching on the ground and help prevent neck injuries. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention - more on that below.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Uncompromised ComfortWith this level of protection and head protection, you may think ventilation is compromised. But not a bit of it. Troy Lee have carefully engineered the outer vents and inner channels to work with the headliner so fresh air is free to circulate and keep you cool.Inside the D4 you'll also enjoy the brilliant XT2 washable liner. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride.Tough, durable, protective and yet lightweight, the D4 Composite is the ideal full-face helmet for the weekend DH racer and avid mountain bike trail slayer.Features:Aerospace shell design and materials (D4 Composite)MIPS C2 brain protection systemFront air intake system with high flow through polymer centre and powergrid side meshCollarbone suspension systemBreakaway visor screwsX-static® and XT2® Anti-Microbial/anti-order paddingQuick-release contoured 3D cheek pads create an anatomically optimized fitWeight - 1050gCPSC 1203*, CE EN1078*, ASTM F1952 - DH, ASTM 2032 - BMX, *Varies by regional standardsShop all MIPS helmets - Click hereBuy Troy Lee Designs from Chain Reaction Cycles, the World's Largest Online Bike Store.