Chain Reaction UK

Chain Reaction UK Rating
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About Chain Reaction UK
Chain Reaction Cycles (CRC) are based in Doagh, in Northern Ireland, originally started out as Ballynure Cycles in 1984 and changing their name after a move to a new shop in 1989. In 2011 they opened a 10,000sq ft standalone retail store in Belfast, Northern Ireland. By 2013 they had become the largest online bike shop in the world!

CRC exists to deliver a world class shopping experience to cyclists around the globe, offering the lowest prices on everything you need to feed your cycling habit, and delivering directly to you with no fuss.
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We currently have 421 different brands listed for Chain Reaction UK in our database

Number of Products Listed for Chain Reaction UK

We currently have 41186 products listed for Chain Reaction UK, that's 41186 opportunities for you to save money!

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Chain Reaction UK have 41186 products listed

Mavic XC821 Mountain Bike Disc Rim - Black - 28 Hole, Black
  • £29.99
  • RRP £62.00
  • Saving you £52

Mavic XC821 Mountain Bike Disc RimThe Mavic XC821 rim is a high performance, fast and lightweight rim designed specifically for XC use. This is an incredibly durable rim featuring a welded joint and single eyelet spoke hole reinforcement.Features: Material: 6061 Aluminium Alloy Joint: SUP (welded) Drilling: Traditional with single eyelet reinforcement UST Tubeless Ready Disc brake specific profileValve Hole Diameter: 6.5mm ETRTO Size: 584x21TSS (27.5"), 622x21TSS (29") Recommended Tyre Sizes: 1.3" to 2.7" Tubeless Tape Width: 25mm Recommended Nipple Length: 14mm Weight: 428g (27.5"), 454g (29")Technologies: SUP (Soudé Usiné Process): After bending, the rim joint is arc welded. The welded seam is then milled for a smooth finish. UST TUBELESS READY: The UST concept improves traction, control and comfort while reducing inertia and flats.Buy Mavic Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Alivio HG400 9 Speed MTB Cassette - Silver - 11-36t}, Silver
  • £29.99

Shimano Alivio HG400 9 Speed MTB CassetteThis 9-Speed Mountain Bike (MTB) Cassette from Shimano offers quick and precise shifting performance at an affordable price. The sprockets have been expertly designed to effortlessly position shift ramps and tooth profiles for enhanced chain and shifting control, making it the ideal upgrade for your mountain bike. Features:Part No: CS-HG400-9Responsive shifting actionImproved chain controlGear Combination 12-36T: 12-14-16-18-21-24-28-32-36Gear Combination 11-32T: 11-12-14-16-18-21-24-28-32Gear Combination 11-34T: 11-13-15-17-20-23-26-30-34Compatible chain: HG 9-speedUse: MTBSpeed: 9 SpeedA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Magura Storm SL Mountain Bike Disc Brake Rotor - Silver - 6 Bolt}, Silver
  • £29.99

Magura Storm SL Rotor For the last 15 years Magura has been gaining experience in the development and production of disc brake rotors for the demanding off road use on mountain bikes. Combining the wealth of experience and the latest results of Mission Performance, Magura have achieved a maximum of stopping power, control and ventilation at a minimum weight (10% weight saving compared to old model). One look is enough as the cool design says it all: the STORM will set a new benchmark when it comes to weight, performance and durability! Magura Storm SL Rotor Features: Optimised rotor geometry for extreme temperature absorption without disc warping. Perfect friction balance between brake pad and rotor for maximum braking power in all conditions, even after extremely long and difficult descents. Wider brake surface prevents tipping of brake pads. This optimises brake modulation without squeaking or brake pad judder. Bigger surface for optimised heat dispersion through more cut outs. Through latest FEM-calculations optimised transitions between brake surface, spoke and fixing ring. Therefore massive weight reduction by equally high stiffness. Optimised production processes creating zero fault rate and therefore allowing further refinements and weight savings without sacrificing strength and durability. Reduced wear compared to old SL rotor. Magura Storm SL Rotor Technical Data: Weight: 15% less than predecessor (From 147g/0.32lbs. (203mm) to 75g/0.16lbs. (140mm) Compatibility: all disc brake models except Gustav M Material: high performance steel Mounting: IS 6-hole version Buy Magura Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Bottom Bracket Bearings DUB (For BSA BB) - Gold - 29x40x6.8}, Gold
  • £29.99

Nukeproof Bottom Bracket Bearings DUB (For BSA BB)If your Nukeproof DUB-type bottom bracket is no longer running smoothly, these are the exact bearings you require to get it running like it's just come out of the box. Easy to fit, these bearings are coated to increase their durability.Bearings with a Titanium CoatingThe bearings have a titanium coating which is applied in a vaporised vacuum environment, this allows its structure and density to be fine-tuned. The ti (titanium) coating helps prevent rust and damage from external elements. The bearings are ABEC 5 certified and suit Nukeproof DUB bottom brackets as well as any other bottom requiring a 29x40x6.8mm bearing.Click here for step by step fitting instructions.Features: Coating: Ti coated Dimensions: 29x40x6.8mm ABEC: 5 Main Application: DUB Bottom brackets Sold as a pair 2-year warrantyBuy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Bottom Bracket Bearings 6806 (30x42x6mm) - Gold - 6806 30x42x6}, Gold
  • £29.99

Nukeproof Bottom Bracket Bearings 6806 (30x42x6mm)If your Nukeproof 30mm bottom bracket is no longer running smoothly, these are the exact bearings you require to get it running like it's just come out of the box. Easy to fit, these bearings are coated to increase their durability.Bearings with a Titanium CoatingThese bearings have a titanium coating which is applied in a vaporised vacuum environment, which allows its structure and density to be fine-tuned. The ti (titanium) coating helps prevent rust and damage from external elements. The 6806 bearings are ABEC 5 certified and suit Nukeproof 30mm bottom brackets as well as any other bottom bracket requiring a 6806 bearing.Please note: These bearings must be installed with the black seal facing outwards.Click here for step by step fitting instructions.Features: Coating: Ti coated Dimensions: 30x42x6mm ABEC: 5 Main Application: 30mm Bottom brackets Sold as a pair 2-year warrantyBuy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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DT Swiss RR 411 18mm Road Rim - Black - 20H, Black
  • £29.99
  • RRP £89.99
  • Saving you £67

DT Swiss RR 411 18mm Road RimThe RR 411 18mm Road Rim from DT Swiss combines the most advanced alloy on the market for road rims and the most advanced rim profile for modern riding. The RR 411 rim is exceptionally light, superbly strong and stylish, and is ready for everything from training to racing. This rim performs excellently for all areas of road riding and is ready to roll with you to the top of the podium.Features:  Material: Aluminium  Internal Rim Width: 18mm  Rim Height: 21mm  Brake Compatibility: Rim Brake  Use: Road  Type: Tubeless Ready  Includes PHR washer, DT Pro Lock Squorx Pro Head 2.0mm nipplesWeight: 435gBuy DT Swiss Wheels & Tyres from Chain Reaction Cycles. Ride. Eat. Sleep. Repeat.

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LifeLine Pro Digital Hanging Scale - Black - One Size}, Black
  • £29.99
  • RRP £34.99
  • Saving you £14

LifeLine Pro Digital Hanging ScaleLifeLine Pro Digital Hanging ScaleDigital hanging scales for accurately weighing your bike, frame and components in kilograms or pounds. Features:  Digital readout  Silicone coated dual prong hanging hook  KGs or Lbs  Weight limit is 50kgs  Accurate to +- 10g  Batteries not included Buy LifeLine from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Bleed Kit Basic SRAM Brake Bleed Kit 2021 - Multi - All SRAM Models}, Multi
  • £29.99

Bleed Kit Basic SRAM Brake Bleed KitBleedkit.com's Basic Edge edition kit includes bare essentials for bleeding all SRAM hydraulic brakes. Fluid and bleed block not included.Compatibility:This kit is compatible with absolutely all SRAM hydraulic brakes including 2017+ hydraulic brakes with Bleeding Edge bleed port. Also compatible with all Avid (Elixir, Juicy...) and all older type Formula hydraulic brakes (Oro, C1, R1, R0, K24, K18...). Not compatible with Formula Cura hydraulic brakes.Features: 2x 20ml Becton & Dickinson syringes 2x M5 assembly 1x Edge assembly Spare O-ringsManufacturer's Part Numbers: BK-80010 Multi One Size All SRAM ModelsBuy Bleed Kit Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Bottom Bracket Bearings MR2437 (24x37x7) - Gold - MR2437 24x37x7}, Gold
  • £29.99

Nukeproof Bottom Bracket Bearings MR2437 (24x37x7)If your Nukeproof 24mm bottom bracket is no longer running smoothly, these are the exact bearings you require to get it running like it's just come out of the box. Easy to fit, these bearings are coated to increase their durability.Bearings with a Titanium CoatingA direct replacement for the bearings found in Nukeproof BSA & pressfit Hollowtech II / GXP bottom brackets, these bearings have a titanium coating which is applied in a vaporised vacuum environment, which allows its structure and density to be fine-tuned. The ti (titanium) coating helps prevent rust and damage from external elements. These MR2437 bearings are ABEC 5 certified and will suit all Nukeproof BSA & pressfit Hollowtech II / GXP bottom brackets as well as any other bottom bracket requiring a MR2437 bearing.Please Note: To use with a GXP crankset, you will need to reuse the adapter you will currently have fitted in the non-driveside bearing.Click here to view the Nukeproof Step by Step How to Guide for Bearing Replacement.Features: Coating: Ti coated Dimensions: 24x37x7mm ABEC: 5 Main Application: 24mm spindle Bottom brackets & GXP with adapter Sold as a pair 2-year warrantyBuy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vitus E-Sommet V-Link SS-Horstlink Bolt Kit - Silver - One Size, Silver
  • £29.99

Vitus E-Sommet V-Link SS-Horstlink Bolt KitThe E-Sommet V-Link SS/Horstlink bolt kit replaces the bolt, washer, spacer & threaded axle of the rear pivot on the suspension linkage on all eSommet frames and comes complete with parts for both sides (2 sets of parts). The same kit can also be used to replace the pivot hardware on the V-Link/Seatstay pivot and comes complete with parts for both sides (2 sets of parts).Features: Genuine High-Quality Vitus Bolt Kit Compatibility: Vitus eSommet Kit Includes: 2x ASEE-SNT 6x ASEE-LWS 2x ASEE-SAX-26LPlease Note: Bearings are not provided with this kitBuy Vitus Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vitus E-Sommet Internal Battery Door Kit 2021 - Black, Black
  • £29.99

Vitus E-Sommet Internal Battery Door KitThe E-Sommet Internal Battery Door Kit from Vitus is a genuine Vitus Replacement Battery Door designed to fit the 2021 E-Sommet.Features: Replacement Battery Door designed to fit the 2021 E-Sommet Kit Includes: 3 x M6x12L - R51B 1 x VT9B-BTCBuy Vitus Frames & Forks from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vitus E-Sommet Main Pivot Bolt Kit (2018) - Silver - One Size, Silver
  • £29.99

Vitus E-Sommet Main Pivot Bolt Kit (2018)The E-Sommet Main pivot bolt kit is a replacement axle assembly for the main pivot on all eSommet frames.Features: Genuine High-Quality Vitus Bolt Kit Compatibility: Vitus eSommet (all models) Kit Includes: 1x M6x25L-P-S 1x 6x10x1t 1x SEE-MAX 1x ASEE-BWSPlease Note: Bearings supplied separatelyBuy Vitus Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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FSA Platinum Pro MegaQuad ISIS E-Type BB - Black - 73x128mm, Black
  • £29.99
  • RRP £89.99
  • Saving you £67

FSA Platinum Pro MegaQuad ISIS E-Type BBIf you want to make sure you're making the most of every crank rotation, this is the bottom bracket to pair with your FSA ISIS type road bike chainset. With its forged titanium spindle and large upgraded bearings, it gives you super-smooth rotation and outstanding power transfer.Tech Info: Please note - The first two numbers in our options (eg. "68" 70 or "73") relate to how wide your bike's bottom bracket shell is in millimetres. The other three numbers (eg. 118) relate to how long your current bottom brackets spindle (axle) is in millimetres.The 68 and 73mm sizes are the "English thread" type, the 70mm size is the "Italian thread" type - please measure your bike's bottom bracket shell width to confirm which size you need.Features: Titanium Nitride coated spindle Cold-forged Aluminium cupsAL7075 Alloy crank bolts (M-14) MegaQuad: 2x double-row deep-groove full-complement sealed cartridge bearing Composite anti-creak sleeve Updated and improved external water sealsBuy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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dhb Blok Long Sleeve Jersey (SIGNAL) - Navy-Brown - S}, Navy-Brown
  • £29.99
  • RRP £60.00
  • Saving you £50

dhb Blok Long Sleeve Jersey (SIGNAL)Ideal for when the temperature drops, the dhb Blok Long Sleeve Jersey (Signal) is the perfect addition to your transitional kit. Crafted from a micro Roubaix fleece, this lightweight and high-wicking top will keep you warm without overheating.The dhb Blok Long Sleeve Jersey is made from premium Italian fabrics, including the powerful micro Roubaix. Perfect for temperature regulation, this thermal stretch material is warming yet breathable – thereby offering insulation in cool conditions but preventing overheating.A set-in sleeve gives the jersey a modern feel, while there is plenty of room to stash your in-ride fuel and valuables with four pockets, one secured by a zip. Reflective inserts on the pockets and chevrons on the sleeves boost visibility.dhb’s Blok collectionBold, confident and fun – dhb’s Blok collection offers distinctive designs for athletes who love standing out from the crowd. Using proven construction techniques and trusted premium fabrics, Blok is engineered to both look good and perform.Features:Materials: 100% PolyesterMicro Roubaix fleece fabricLightweight, high-wicking and super softFull-length lockdown YKK Group zipThree vertical pockets on backFourth pocket with YKK Group zipReflective detailsElastic hem gripperBuy dhb Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Blackspire Snaggletooth Narrow Wide Chainring - Orange - 4-Bolt, Orange
  • £29.99
  • RRP £44.99
  • Saving you £33

Blackspire Snaggletooth Narrow Wide ChainringAn ideal choice for MTB riders who are running 1x9, 10 or 11-speed gearing, the Snaggletooth chainring has a tough 7075 aluminium construction. Blackspire also CNC machined this mountain bike chainring to save weight yet retain its strength. The Snaggletooth’s “narrow wide” tooth profiling and lack of shifting ramps or pins means your chain stays in place on the roughest trails.Features:Material: CNC Machined T6-7075 AluminiumCompatibility: 1x drivetrains and most MTB cranksets (with correct BCD)For use with 9, 10 or 11-speed drivetrainsAnodised with laser etched graphicsDurableSold individuallyMounting bolts not includedManufacturer Reference Codes:Black 104mm 30T: 595-330WP; Black 104mm 32T: 595-332WP; Black 104mm 36T: 595-336WP; Black 104mm 34T: 595-334WP; Red 104mm 30T: 595-330WPR; Green 104mm 30T: 595-330WPG; Blue 104mm 30T: 595-330WPB; Red 104mm 32T: 595-332WPR; Green 104mm 32T: 595-332WPG; Blue 104mm 32T: 595-332WPB; Red 104mm 36T:595-336WPR; Green 104mm 36T: 595-336WPG; Red 104mm 34T: 595-334WPR; Green 104mm 34T: 595-334WPG; Blue 104mm 34T: 595-334WPB; Black 96mm 34T: 595-49634; Black 96mm 32T: 595-49632; Black 96mm 36T:595-49636; Black 88mm 32T: 595-98532; Black 96mm 30T: 595-49630; Black 88mm 30T: 595-98530; Gold 104mm 30T: 595-330WPGD; Purple 104mm 30T: 595-330WPP; Gold 104mm 32T: 595-332WPGD; Purple 104mm 32T: 595-332WPP; Gold 104mm 34T: 595-334WPGD; Purple 104mm 34T: 595-334WPP; Blue 104mm 36T: 595-336WPB; Gold 104mm 36T: 595-336WPGD; Purple 104mm 36T: 595-336WPP; Orange 104mm 32T: 595332WPO; Orange 104mm 36T: 595-336WPO; Orange 104mm 34T: 595-334WPO; Orange 104mm 30T: 595-330WPOBuy Blackspire Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Brand-X Ascend Lever Kit V2 - (1 x Gears) - Black - 1x Gears}, Black
  • £29.99
  • RRP £39.99
  • Saving you £25

Brand-X Ascend Lever Kit V2 - (1 x Gears) This ergonomic shifter style dropper remote lever is designed to be positioned where your front shifter would normally sit. This means it's perfectly suited for riders who are using a 1x chain ring set up, without a front derailleur. This superb lever kit is compatible with all the Brand-X Ascend dropper seatposts and other cable actuated posts for a smooth and effortless operation.Adjustable Dropper Remote Thanks to its adjustable angle range of +10 degrees and a horizontal adjustment of +7mm, you can enjoy a more customised fit to suit your preferred hand position. To top it off, the cables can be installed at either end, so you can either route the cable ferrule into the lever, or you can use the screw and install the cable at the post.Features:  Material: 6061-T6 AluminiumFinish: Sand blasted and hard anodised black Diameter:  22.2mm Cable Length 1.5m Cable Housing: 1500mm (inner cable 1710mm)  Bar mounted shifter style remote lever Weight: 40.7g (excluding the cable 64g)Buy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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TA 130 BCD Alize Inner Chainring (38-46T) - Black - 5-Bolt, Black
  • £29.99
  • RRP £34.99
  • Saving you £14

TA 130 BCD Alize Inner Chainring (38-46T)The Alize from TA is the ultimate high-quality inner chainring, as it will bring you many miles of reliable and consistent performance. It’s constructed from hard-wearing 7075 T6 heat-treated aluminium, which has been lathe cut. Compared to the more common pressed manufacturing method, the lathe cut technique makes each tooth of the chainring more precisely shaped and the result for you is clean shifting and super-smooth operation. This chainring is the perfect upgrade for keeping your bike's performance at its peak.Features: Material: 7075 T6 heat-treated Aluminium Speed: 9/10-Speed Chainset Compatibility: Shimano 9/10-Speed road models and other brands, except Campagnolo Bolt Circle Diameter (BCD): 5x130mm Sold IndividuallyBuy TA Components from Chain Reaction Cycles, the World's Largest Online Bike Store

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dhb Blok Long Sleeve Jersey (SIGNAL) - Navy-Brown - M}, Navy-Brown
  • £29.99
  • RRP £60.00
  • Saving you £50

dhb Blok Long Sleeve Jersey (SIGNAL)Ideal for when the temperature drops, the dhb Blok Long Sleeve Jersey (Signal) is the perfect addition to your transitional kit. Crafted from a micro Roubaix fleece, this lightweight and high-wicking top will keep you warm without overheating.The dhb Blok Long Sleeve Jersey is made from premium Italian fabrics, including the powerful micro Roubaix. Perfect for temperature regulation, this thermal stretch material is warming yet breathable – thereby offering insulation in cool conditions but preventing overheating.A set-in sleeve gives the jersey a modern feel, while there is plenty of room to stash your in-ride fuel and valuables with four pockets, one secured by a zip. Reflective inserts on the pockets and chevrons on the sleeves boost visibility.dhb’s Blok collectionBold, confident and fun – dhb’s Blok collection offers distinctive designs for athletes who love standing out from the crowd. Using proven construction techniques and trusted premium fabrics, Blok is engineered to both look good and perform.Features:Materials: 100% PolyesterMicro Roubaix fleece fabricLightweight, high-wicking and super softFull-length lockdown YKK Group zipThree vertical pockets on backFourth pocket with YKK Group zipReflective detailsElastic hem gripperBuy dhb Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.

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dhb Blok Long Sleeve Jersey (SIGNAL) - Navy-Brown - XS}, Navy-Brown
  • £29.99
  • RRP £60.00
  • Saving you £50

dhb Blok Long Sleeve Jersey (SIGNAL)Ideal for when the temperature drops, the dhb Blok Long Sleeve Jersey (Signal) is the perfect addition to your transitional kit. Crafted from a micro Roubaix fleece, this lightweight and high-wicking top will keep you warm without overheating.The dhb Blok Long Sleeve Jersey is made from premium Italian fabrics, including the powerful micro Roubaix. Perfect for temperature regulation, this thermal stretch material is warming yet breathable – thereby offering insulation in cool conditions but preventing overheating.A set-in sleeve gives the jersey a modern feel, while there is plenty of room to stash your in-ride fuel and valuables with four pockets, one secured by a zip. Reflective inserts on the pockets and chevrons on the sleeves boost visibility.dhb’s Blok collectionBold, confident and fun – dhb’s Blok collection offers distinctive designs for athletes who love standing out from the crowd. Using proven construction techniques and trusted premium fabrics, Blok is engineered to both look good and perform.Features:Materials: 100% PolyesterMicro Roubaix fleece fabricLightweight, high-wicking and super softFull-length lockdown YKK Group zipThree vertical pockets on backFourth pocket with YKK Group zipReflective detailsElastic hem gripperBuy dhb Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.

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dhb Moda Womens SS Jersey (MOONSTONE) AW21 - Navy-Purple - UK 10}, Navy-Purple
  • £29.99
  • RRP £50.00
  • Saving you £40

dhb Moda Women's Short Sleeve Jersey (MOONSTONE)Lightweight, fast-wicking and dazzling in design, the dhb Moda Women's Short Sleeve Jersey - Moonstone will be the envy of every group ride. Your miles will be full of smiles when matched with these premium Italian fabrics and modern styling.dhb raised the bar for female cyclists when they launched Moda in 2020. The Moda Women’s Short Sleeve Jersey delivers in both style and performance, with high-quality Italian fabrics ensuring you will ride in comfort every time.Super soft to the touch, the fabric is designed to gently hug the skin for maximum comfort, while dhb have carefully selected an opaque, feminine mesh to further enhance its luxurious feel. This is not a race-fit jersey and you should consider sizing down if you prefer a more compressive style.A low collar also gives the jersey a more feminine look. There are no sleeve grippers, instead, the fabric naturally hugs your arms without pinching into the skin. And with three vertical pockets and a fourth zipper pocket, there is plenty of room for storage on every ride.dhb’s Moda collectionCreated for women, by women. Combining technical performance with modern styling, dhb’s Moda collection is built to perform and made to empower. Tested and developed with women from a multitude of sporting backgrounds, every minute detail has been considered and every design crafted to ensure great versatility, comfort and support.Features:Materials: 100% PolyesterPremium Italian fabricsLightweight, super soft and breathableFeminine low-collar constructionLuxurious mesh fabricThree vertical pockets on backFourth pocket with YKK Group zipConsider sizing down for compressive fitBuy dhb Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.

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