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

Orange Seal Endurance Sealant Refill - 16oz}
  • £21.99

Orange Seal Endurance Sealant RefillThis fast-acting sealant has been proven to seal punctures up to 1/4". Designed to keep you going after a puncture, this refill guarantees to seal a puncture in a variety of temperatures and altitudes. What's more, it can be used with all-tube, tubular and tubeless systems. Features:Available in 4oz, 8oz, and 16oz bottlesDeveloped to last x2-x3 longer than regular sealantCompatibility: All-Tube, Tubular and Tubeless SystemsBuy Orange Seal Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Knog Plug Rear Bike Light - Grey, Grey
  • £21.99

Knog Plug Rear Bike LightThe Plug Rear Light from Knog is a bright and dependable light that helps you stay visible for other road users in all weather conditions and low light situations. Plus, it's 100% waterproof, has up to 100 hours of run time on a single charge and is USB rechargeable.Lightweight, Reliable and USB RechargeableThis rear light uses an over-moulded TPU construction and is packed with technology, such as its domed lens on the rear for improved side visibility. Even with all of the light being dispersed by the Plug, riders don't need to sweat the battery life - with up to 100 hours run-time on eco-flash mode. Designed to work with all genres of bicycles from commuters to aero road bikes, this Plug light comes with different silicone bands for securing it to handlebars, frame or seatpost. If you want a versatile, easy to use rear light, the Knog Plug Rear Light is a great choice. Features: Versatile, easy to use light set with 5 modes: Max, Medium, Pulse, Flash & Eco-Flash USB rechargeable Lithium Polymer battery provides up to 100 hours of run time in Eco-Flash mode Single LED provides a powerful beam, while cutouts in the body and domed rear lens improve side visibility Durable design is 100% waterproof against the elements Interchangeable straps for different handlebar/frame/seatpost shapesBuy Knog Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Alivio T4000 V-Brake - Black - Front}, Black
  • £21.99

Shimano Alivio T4000 V-BrakeReady for the road, no matter what challenge you face, the Shimano Alivio V-brake is designed with road, time trial and cyclocross riders in mind. Featuring 107mm long arms for enhanced mudguard clearance, it offers strong and reliable braking performance in all weather conditions.Features:Use: Commuter, Touring, Road, Time Trial, CyclocrossBrake Type: Mountain Bike (MTB) specific V-brakeCartridge shoe holderStrong braking power with excellent braking controlUpdated rubber boots secure attachment to lead pipe107mm arch for better clearanceStrong braking power with excellent braking controlCartridge shoe holderStrong braking power with excellent braking controlUpdated rubber boots secure attachment to lead pipeSingle or Pair: PairPart No: BR-T4000NOTE: V-Brake pipe NOT IncludeA 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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Shimano K04S Metal Disc Brake Pad - Metal}
  • £21.99

Shimano K04S Metal Disc Brake PadsThe K04S Metal Disc Brake Pads are suitable for use in a wide range of Shimano's models. These Shimano pads offer confidence-inspiring performance as you're taking on steep descents and diving into bends.Made in two different compounds, these Shimano road pads will help you to ride at pace, knowing that you'll always have fine speed control when you need it. The sintered type is more durable, and the resin type performs better in very wet riding conditions.Features: Pair of pads (for one brake) Steel Backed Compound: MetalCompatible Models: BR-M9100, BR-R9170-F, BR-R9170-R, BR-R8070-F, BR-R8070-R, BR-R7070-F, BR-R7070-R, BR-4770-F, BR-4770-R, BR-RS805-F, BR-RS805-R, BR-RS505, BR-RS405-F, BR-RS405-R, BR-RS305, BR-U5000, BR-RX810-F, BR-RX810-R, BR-RX400-F, BR-RX400-RBuy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Alivio T4000 V-Brake - Silver - Front}, Silver
  • £21.99

Shimano Alivio T4000 V-BrakeReady for the road, no matter what challenge you face, the Shimano Alivio V-brake is designed with road, time trial and cyclocross riders in mind. Featuring 107mm long arms for enhanced mudguard clearance, it offers strong and reliable braking performance in all weather conditions.Features:Use: Commuter, Touring, Road, Time Trial, CyclocrossBrake Type: Mountain Bike (MTB) specific V-brakeCartridge shoe holderStrong braking power with excellent braking controlUpdated rubber boots secure attachment to lead pipe107mm arch for better clearanceStrong braking power with excellent braking controlCartridge shoe holderStrong braking power with excellent braking controlUpdated rubber boots secure attachment to lead pipeSingle or Pair: PairPart No: BR-T4000NOTE: V-Brake pipe NOT IncludeA 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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crankbrothers Premium Zero Clipless MTB Cleats - Silver, Silver
  • £21.99
  • RRP £24.99
  • Saving you £12

crankbrothers Premium Zero Clipless MTB CleatsThe new XC/Race cleat with no float for greater pedaling efficiency. Made of premium brass.Features:  Weight: 30g per pair  Float: 0º  Material: Premium brass  Release angle: 15º  2-hole bolt pattern for mtb shoes  2.2mm left/right adjustment   Includes: Plastic spacing shims  Compatible with: all clipless crankbrothers pedalsBuy crankbrothers Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Blackspire Snaggletooth DM Shimano MTB Chain Ring - Red - 30t}, Red
  • £21.99
  • RRP £44.99
  • Saving you £51

Blackspire Snaggletooth DM Shimano MTB Chain RingDeveloped for compatibility with Shimano direct-mount cranks, this versatile chainring features a tough aluminium construction for fantastic durability and longevity on your mountain bike. Coming equipped with Blackspire's highly sought-after Snaggletooth tooth profile, this model uses a modern design to ensure that you won't have to worry about dropping a chain again. One final benefit is this version has also been put through a CNC-machining process, which shaves off any unnecessary weight. The result is a hard-wearing chainring that offers a superior strength to weight ratio on every intense MTB ride. Features: Material: CNC-machined 7075-T6 Aluminium Use: MTB Speed: 9, 10, 11, or 12 speed drivetrains Mount: Shimano Direct mount Chainline: Bi-Directional for 51mm to 55mm chainline Crankset Compatibility: Shimano 9100/8100/7100 Tooth Size: Multiple sizes available separately Single Chainring: YesBuy Blackspire Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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LifeLine Internal Cable Routing Tool - Black, Black
  • £21.99

LifeLine Internal Cable Routing ToolThis cable routing tool removes the pain of feeding internal cables through frames. Boasting a series of magnets, adapters and a guide cable, this handy tool allows you to feed inner cables, Di2 wiring and hydraulic hose through your frame effortlessly.Simple Internal Cable RoutingTo use, feed the guide cable through your frame using the magnet on your multi-tool and the magnet on the guide cable to pass from the exit to insert point. Next, attach the correct adaptor from the multi-tool to your cable which requires routing. Attach the magnet adaptor to this cable and connect the guide cable to the routing cable. Finally, simply drag the routing cable back through the frame by pulling on the guide cable.Features:  Main magnet  1.3m guide cable  Hydraulic hose adaptor  Brake hose adaptor  Di2 E-Tube adaptorBuy LifeLine Workshop from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Blackspire Snaggletooth DM Shimano MTB Chain Ring - Lime Green - 36t}, Lime Green
  • £21.99
  • RRP £44.99
  • Saving you £51

Blackspire Snaggletooth DM Shimano MTB Chain RingDeveloped for compatibility with Shimano direct-mount cranks, this versatile chainring features a tough aluminium construction for fantastic durability and longevity on your mountain bike. Coming equipped with Blackspire's highly sought-after Snaggletooth tooth profile, this model uses a modern design to ensure that you won't have to worry about dropping a chain again. One final benefit is this version has also been put through a CNC-machining process, which shaves off any unnecessary weight. The result is a hard-wearing chainring that offers a superior strength to weight ratio on every intense MTB ride. Features: Material: CNC-machined 7075-T6 Aluminium Use: MTB Speed: 9, 10, 11, or 12 speed drivetrains Mount: Shimano Direct mount Chainline: Bi-Directional for 51mm to 55mm chainline Crankset Compatibility: Shimano 9100/8100/7100 Tooth Size: Multiple sizes available separately Single Chainring: YesBuy Blackspire Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Blackspire Snaggletooth DM Shimano MTB Chain Ring - Lime Green - 34t}, Lime Green
  • £21.99
  • RRP £44.99
  • Saving you £51

Blackspire Snaggletooth DM Shimano MTB Chain RingDeveloped for compatibility with Shimano direct-mount cranks, this versatile chainring features a tough aluminium construction for fantastic durability and longevity on your mountain bike. Coming equipped with Blackspire's highly sought-after Snaggletooth tooth profile, this model uses a modern design to ensure that you won't have to worry about dropping a chain again. One final benefit is this version has also been put through a CNC-machining process, which shaves off any unnecessary weight. The result is a hard-wearing chainring that offers a superior strength to weight ratio on every intense MTB ride. Features: Material: CNC-machined 7075-T6 Aluminium Use: MTB Speed: 9, 10, 11, or 12 speed drivetrains Mount: Shimano Direct mount Chainline: Bi-Directional for 51mm to 55mm chainline Crankset Compatibility: Shimano 9100/8100/7100 Tooth Size: Multiple sizes available separately Single Chainring: YesBuy Blackspire Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Acros Ai-42 Lower Headset Cup (IS42-30) - Black - 1.1/8", Black
  • £21.99
  • RRP £34.99
  • Saving you £37

Acros Ai-42 IS42/30 Lower HeadsetDesigned for handling the intensity from road-racing and all-day epics on the MTB trails, this lower headset gives you a smooth rotatable interface. It features a hard-wearing aluminium construction, which means you'll benefit from its incredible strength without adding any unnecessary weight to your bike. Coming complete with stainless steel bearings and an R3 seal, this lower headset is an ideal upgrade for reliable steering performance in all-weather conditions.Features: Headset Material: Aluminium Bearing Material: Stainless Steel Seal Material: R3 (Metal-reinforced Rubber) Use: Road, MTBSteerer Diameter: 1 1/8"Headset Type: IntegratedPart Number: 3902601SBearing Fit: 42mmTotal Stack Height: 13mmWeight: 50g (approx)Buy Acros Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Blackspire Snaggletooth DM Shimano MTB Chain Ring - Red - 36t}, Red
  • £21.99
  • RRP £44.99
  • Saving you £51

Blackspire Snaggletooth DM Shimano MTB Chain RingDeveloped for compatibility with Shimano direct-mount cranks, this versatile chainring features a tough aluminium construction for fantastic durability and longevity on your mountain bike. Coming equipped with Blackspire's highly sought-after Snaggletooth tooth profile, this model uses a modern design to ensure that you won't have to worry about dropping a chain again. One final benefit is this version has also been put through a CNC-machining process, which shaves off any unnecessary weight. The result is a hard-wearing chainring that offers a superior strength to weight ratio on every intense MTB ride. Features: Material: CNC-machined 7075-T6 Aluminium Use: MTB Speed: 9, 10, 11, or 12 speed drivetrains Mount: Shimano Direct mount Chainline: Bi-Directional for 51mm to 55mm chainline Crankset Compatibility: Shimano 9100/8100/7100 Tooth Size: Multiple sizes available separately Single Chainring: YesBuy Blackspire Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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SPIBelt Running Belt with Large 8.9 Inch Pocket - Black-Blue Zip - One Size}, Black-Blue Zip
  • £21.99

SPIBelt Running Belt with Large 8.9 Inch PocketA bounce free running belt with a large, expandable pocket for all your essentials for medical supplies, nutrition products, maps, your phone and more. The belt comes with a soft, elasticated construction that is comfortable to wear and offers bounce-free stability.FeaturesSecure buckle closureSoft and elasticated constructionLarge 8.9’’ pocketBounce free constructionWaist fit: 28’’ to 56’’Buy SPIBelt Running Belts from Chain Reaction Cycles, the World's Largest Online Bike Store.

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SPIBelt Running Belt with Large 8.9 Inch Pocket - Black-Red Zip - One Size}, Black-Red Zip
  • £21.99

SPIBelt Running Belt with Large 8.9 Inch PocketA bounce free running belt with a large, expandable pocket for all your essentials for medical supplies, nutrition products, maps, your phone and more. The belt comes with a soft, elasticated construction that is comfortable to wear and offers bounce-free stability.FeaturesSecure buckle closureSoft and elasticated constructionLarge 8.9’’ pocketBounce free constructionWaist fit: 28’’ to 56’’Buy SPIBelt Running Belts from Chain Reaction Cycles, the World's Largest Online Bike Store.

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SPIBelt Running Belt with Large 8.9 Inch Pocket - Black-Black Zip - One Size}, Black-Black Zip
  • £21.99

SPIBelt Running Belt with Large 8.9 Inch PocketA bounce free running belt with a large, expandable pocket for all your essentials for medical supplies, nutrition products, maps, your phone and more. The belt comes with a soft, elasticated construction that is comfortable to wear and offers bounce-free stability.FeaturesSecure buckle closureSoft and elasticated constructionLarge 8.9’’ pocketBounce free constructionWaist fit: 28’’ to 56’’Buy SPIBelt Running Belts from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Funn Kingpin 35 Mountain Bike Riser Handlebar - Red - 35.0mm, Red
  • £21.99
  • RRP £69.99
  • Saving you £69

Funn Kingpin 35 Mountain Bike Riser HandlebarReady for adventure, this stunning riser bar is designed for MTB use as it offers phenomenal strength and stiffness. It features a tough AL6069 aluminium construction which makes it highly-effective at handling all the sudden knocks and bumps that come with riding off-road. Furthermore, its precision-engineered shape gives it sharper control when cornering and greater rider confidence when soaring over jumps. Lightweight and Durable MTB Riser BarNo stranger to the finer details, this stunning version weighs in at only 365g (approx), so you can enjoy its top-tier performance without any unnecessary weight. To top it off, Funn has finished this off-road warrior with a robust sandblasting process to protect it against fatigue. This makes it a perfect choice of upgrade for riders who like to explore all year round in all weather conditions. Features: Material: AL6069 Aluminium Finish: Sandblasted Use: MTB Diameter: 35mm Length: 785mm Weight: 365g (approx)Buy Funn Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Ritchey WCS Race Bar Tape - Black - Standard}, Black
  • £21.99
  • RRP £28.99
  • Saving you £24

Ritchey WCS Race Bar TapeAvailable in a wide range of colours to compliment your road bike’s frame and components and available with or without gel padding, the WCS Race Bar Tape is the ideal choice for endurance cyclists and aggressive racers. Ritchey has made both from durable polyurethane with the lighter weight non-gel model tipping the scales at only 63g. Comfortable for use with or without gloves, both tape types soak up vibrations from the road effectively and the thicker gel type provides even more hand comfort when you’re riding on damaged or gravel roads.Features: Material: Superlight polyurethane (with Gel backing on "Gel" option) Thickness: With Gel: 2.4mm; Without Gel: 1.8mm Length: 2x200cm Gel or Tape: Separate with gel without gel options Single or Pair: Pair (enough length for all drop bar sizes) Bar Plugs Included: Yes, Black end plugs included Embossed Ritchey logos within the tape Weight: With Gel: 90g; Without Gel: 63gBuy Ritchey Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Lezyne LED KTV Drive Bike Rear Light - Black, Black
  • £21.99

Lezyne LED KTV Drive Bike Rear LightA brilliant addition to help you stay illuminated when cycling in low light, this rear light by Lezyne offers a bright 10 lumen light output and 270-degrees of visibility. Equipped with a long-lasting LED lamp, this KTV Drive model is set within an IPX7-waterproof construction for all-weather protection. It also comes with a variety of settings to suit the conditions of your route.Light Modes: Blast: 10 lumens – 4.30 hours Economy: 3 lumens – 12.30 hours Pulse: 10 lumens – 7 hours Flash One: 10 lumens – 12.30 hours Flash Two: 5 lumens – 20 hoursCompact, aero-post compatible safety light with two bright LEDs. It features a super lightweight, yet durable co-molded construction that is IPX7 (waterproof) rated. Up to 20 hours of runtime (seven hour increase) with highly improved optics. Its Wide Angle Lens offers up to 270° of visibility. The KTV Drive rear provides up to 10 lumens and five output/flash modes. And it features an integrated USB stick for convenient cable-free recharging. Features: Material: Durable co-moulded construction Maximum Output: 10 lumens Lens Type: Wide Angle Lens Battery Life: 20 hours Recharge Time: 3 hours Charging: USB Visibility Angle: 270-degrees Water-Resistance Rating: IPX7 Weight: 54gBuy Lezyne Lights from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Hope Seat Clamp - Silver - 31.8mm}, Silver
  • £21.99

Hope Seat ClampNow adopting a revised design, this Hope seatpost clamp can be used as either a bolted collar or a quick release type (please note a QR skewer is not included, this must be sourced separately). Available in a range of colours and weighing a mere 52g, it's an ideal lightweight and durable upgrade for your mountain bike or road bike.Reasons to Buy: Revised design. Lightweight.Durable upgrade for your road or mountain bike.Features: Material: CNC Machined 2014 Aluminium Finish: Anodised Clamp Diameter: Available in a range of sizes Stack Height: 17mm Please Note: The bolt up type does not come with a QR, and vice versa Weight: 52gBuy Hope Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Pro Sport Control Team Embossed Logo Bartape - Black, Black
  • £21.99

Pro Sport Control Team Embossed Logo BartapeLightweight and easy to install, the Sport Control Bar Tape is the same as used by many professional riders at World Tour events and will ensure your bike is race-ready and gives you the comfort you need for taking on long distances and for aggressive riding. Pro has made it with EVA foam and added a gel inner core, this ensures it cushions the impact of sudden vibrations and shocks when you're riding over damaged tarmac.Features:Material: EVA FoamGel or Tape Only: Gel innerThickness: 2.5mmSingle or Pair: Pair (enough length for all drop bar sizes)Adhesive: SiliconeBar End Plugs Included: YesLightweight and flexibleDeveloped for easy wrapping Buy Pro Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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