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 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

Gloworm Quarter Turn Mount - Black, Black
  • £6.99
  • RRP £9.99
  • Saving you £30

Gloworm QR Bar Mount 35 (G1.0/G2.0)The Quarter Turn Mount from Gloworm is compatible with Gloworm CX lights and enables you to mount it on your bike handlebar. Plus, this mount is also compatible with the Garmin quarter-turn mount system.The Gloworm CX Quarter Turn Mount enables you to mount your CX on the Gloworm QR bar mount utilising the quarter-turn style system. This is compatible with Garmin quarter-turn mounts and allows you to easily mount and dismount the light. The mount is designed to securely hold your CX light no matter the terrain.Features: Quarter Turn Mount Bolt O ringsBuy Gloworm Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Gloworm XSV Replacement Optics - Clear - Spot}, Clear
  • £6.99
  • RRP £7.99
  • Saving you £13

Gloworm XSV Replacement OpticsThe XSV Replacement Optics from Gloworm is a replacement/spare optic that is interchangeable for different light effects and diffusion for Gloworm XSV cycle lights.Genuine replacement optics for your Gloworm XSV Light. Choose from either: Spot, Flood or Wide for the X2/XS G1.0, Spot, Wide or Honeycomb for the X2/XS/XSV G2.0 or Spot/Spot, Spot/Wide or Wide/Wide for the CX/Alpha. SPOT (96% Efficient/FWHM 17 degrees):The spot optic provides the narrowest beam. It is also the most efficient, allowing the greatest light output. It can be used in conjunction with another spot optic to gain the greatest possible output and therefore beam distance. This configuration is best used on the helmet to see down the trail or to spot the exit of a turn. Alternatively, the spot could be paired with another optic type from an alternative light pattern. FLOOD (84% Efficient/FWHM 25 degrees):For a smooth diffused light pattern the Flood optic is the best option. It takes the light and smooths the light across the width of the beam, making it slightly easier on the eye and creating even light from left to right. A pair of Flood optics would provide a wall of smooth light, however in doing so a significant amount of light intensity would be lost compared to a pair of spot optics. The flood is best used in tandem with a spot or wide optic. WIDE (87% Efficient/FWHM 40 degrees):This optic provides a wide rectangular beam, it utilises the light output to provide more peripheral light and less light in the vertical axis. While not as optically efficient as the Spot Optic, it provides very good output for a wide-angle optic. Two wide optics can be paired as a great option for use on the road, however, when paired with either a flood or spot optic an effective hybrid beam can be created. HONEYCOMB (87% Efficient/FWHM 30 degrees):Designed for use with the XSV, the Honeycomb Optic is used to gain a smooth diffused light pattern when used with 2 spot optics or other honeycomb optics. It takes the light and smooths it across the width of the beam, making it slightly easier on the eye and creating a more even transition from the bright beam centre. Features: Gloworm G1.0 The X2 and XS use the same single cone optics, whilst the CX and Alpha share the same double optics. The G1.0 XSV uses the same optics as the G2.0 XSV Gloworm G2.0 The X2 and XS use the same single cone optics The XSV uses the same optics as the G1.0 XSV.Buy Gloworm Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Gloworm XSV Replacement Optics - Clear - Wide}, Clear
  • £6.99
  • RRP £7.99
  • Saving you £13

Gloworm XSV Replacement OpticsThe XSV Replacement Optics from Gloworm is a replacement/spare optic that is interchangeable for different light effects and diffusion for Gloworm XSV cycle lights.Genuine replacement optics for your Gloworm XSV Light. Choose from either: Spot, Flood or Wide for the X2/XS G1.0, Spot, Wide or Honeycomb for the X2/XS/XSV G2.0 or Spot/Spot, Spot/Wide or Wide/Wide for the CX/Alpha. SPOT (96% Efficient/FWHM 17 degrees):The spot optic provides the narrowest beam. It is also the most efficient, allowing the greatest light output. It can be used in conjunction with another spot optic to gain the greatest possible output and therefore beam distance. This configuration is best used on the helmet to see down the trail or to spot the exit of a turn. Alternatively, the spot could be paired with another optic type from an alternative light pattern. FLOOD (84% Efficient/FWHM 25 degrees):For a smooth diffused light pattern the Flood optic is the best option. It takes the light and smooths the light across the width of the beam, making it slightly easier on the eye and creating even light from left to right. A pair of Flood optics would provide a wall of smooth light, however in doing so a significant amount of light intensity would be lost compared to a pair of spot optics. The flood is best used in tandem with a spot or wide optic. WIDE (87% Efficient/FWHM 40 degrees):This optic provides a wide rectangular beam, it utilises the light output to provide more peripheral light and less light in the vertical axis. While not as optically efficient as the Spot Optic, it provides very good output for a wide-angle optic. Two wide optics can be paired as a great option for use on the road, however, when paired with either a flood or spot optic an effective hybrid beam can be created. HONEYCOMB (87% Efficient/FWHM 30 degrees):Designed for use with the XSV, the Honeycomb Optic is used to gain a smooth diffused light pattern when used with 2 spot optics or other honeycomb optics. It takes the light and smooths it across the width of the beam, making it slightly easier on the eye and creating a more even transition from the bright beam centre. Features: Gloworm G1.0 The X2 and XS use the same single cone optics, whilst the CX and Alpha share the same double optics. The G1.0 XSV uses the same optics as the G2.0 XSV Gloworm G2.0 The X2 and XS use the same single cone optics The XSV uses the same optics as the G1.0 XSV.Buy Gloworm Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Bookman Reflective Leopard Print Stickers - White, White
  • £6.99

Bookman Reflective Leopard Print StickersThe Reflective Leopard Print Stickers from Bookman are stylish, highly reflective and durable addition that adds leopard print styling to any bike.Reflective and Stylish Frame StickersHigh visibility reflective decals in a striking leopard pattern. Reflective adhesives with an attitude to style your bike and maximise your impact in concrete jungles. This will give your bike a truly unique silhouette that will stand out in both daylight and night-time. Attach the stickers to your bike or helmet.Instructions: 1. Clean the surface where you want to mount your reflector 2. Peel off the sticker and stick it onFeatures: Material: 3M Scotchlite Reflective Graphic Film Contents: 1 sheet of reflective adhesives in leopard shape Sheet measures: 9,5 x 11,5 cm (3,74 x 4,53 in) The reflectors can be peeled off from the frame without harming itBuy Bookman Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Bookman Reflective Stickers - Black, Black
  • £6.99

Bookman Reflective StickersThe Reflective Stickers from Bookman are highly reflective and very visible to other when you're cycling in low light conditions. These versatile and durable reflective stickers are ideal for adding more visibility when out and about when the sun has gone down.Reflective Stickers are a fun and colourful way of making your bike look awesome whilst providing extra safety. Attach the stickers to your bike or helmet. The black and white stickers reflect white, while the colour stickers reflect light in their colour. If used on your bike in traffic Bookman suggest using white stickers in front and red facing back. Instructions: 1. Clean the surface where you want to mount your sticker 2. Peel off the sticker and put it onFeatures: Contents: 8 large stickers; 4 small stickers The stickers can be peeled off from the frame without harming it Material: 3M Scotchlite Reflective Graphic Film Bookman Part Number: 272Buy Bookman Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Bookman Reflective Stickers - Blue, Blue
  • £6.99

Bookman Reflective StickersThe Reflective Stickers from Bookman are highly reflective and very visible to other when you're cycling in low light conditions. These versatile and durable reflective stickers are ideal for adding more visibility when out and about when the sun has gone down.Reflective Stickers are a fun and colourful way of making your bike look awesome whilst providing extra safety. Attach the stickers to your bike or helmet. The black and white stickers reflect white, while the colour stickers reflect light in their colour. If used on your bike in traffic Bookman suggest using white stickers in front and red facing back. Instructions: 1. Clean the surface where you want to mount your sticker 2. Peel off the sticker and put it onFeatures: Contents: 8 large stickers; 4 small stickers The stickers can be peeled off from the frame without harming it Material: 3M Scotchlite Reflective Graphic Film Bookman Part Number: 272Buy Bookman Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Bookman Reflective Stickers - White, White
  • £6.99

Bookman Reflective StickersThe Reflective Stickers from Bookman are highly reflective and very visible to other when you're cycling in low light conditions. These versatile and durable reflective stickers are ideal for adding more visibility when out and about when the sun has gone down.Reflective Stickers are a fun and colourful way of making your bike look awesome whilst providing extra safety. Attach the stickers to your bike or helmet. The black and white stickers reflect white, while the colour stickers reflect light in their colour. If used on your bike in traffic Bookman suggest using white stickers in front and red facing back. Instructions: 1. Clean the surface where you want to mount your sticker 2. Peel off the sticker and put it onFeatures: Contents: 8 large stickers; 4 small stickers The stickers can be peeled off from the frame without harming it Material: 3M Scotchlite Reflective Graphic Film Bookman Part Number: 272Buy Bookman Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vitus Dominer Rear MTB Hub Axle (2016 On) - Neutral - 148mm}, Neutral
  • £6.99
  • RRP £11.99
  • Saving you £42

Vitus Dominer Rear MTB Hub Axle (2016 On)A superb spare or replacement axle for your trail-dominating Dominer+, this rear-fitting model gives a sturdy and supportive performance on every awesome off-road outing. Measuring 182mm long and Boost-sized for big and bold MTB rides, it ensures a steady and stable roll when paired with your hard-riding rear hub. FeaturesLength: 182mmHead Height: 5mmThread Length: 15mmSize: 148x12mm Boost Buy Vitus Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vitus Thru Axle Switch Lever - Black - Rear}, Black
  • £6.99

Vitus Thru Axle Switch LeverThis Switch lever is a removeable handle for Vitus bikes with 12mm thru-axles. The associated Vitus production bikes are supplied with one lever which can be inserted into either the front or back axle to tighten or remove the wheel axle. The switch lever can be left in one of the axles whilst riding, and is held in place via a retaining spring, or can be removed for a cleaner look, better security, or some aero gains. Features: Replacement 12mm Thru Axle handle for Vitus bikes Genuine Vitus spare partBuy Vitus Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Joe's No Flats Tubeless Ready Kit - Eco Sealant - 32mm Valve
  • £6.99
  • RRP £32.99
  • Saving you £79

Joe's No Flats Tubeless Ready Kit - Eco SealantThis version of the popular Joe's No Flats Tubeless Ready Kit comes with their eco-friendly sealant and has everything you need to setup tubeless ready rims and tyres. One of the quickest and easiest to use on the market, the sealant that comes with this kit contains micro-sealing particles to quickly find and seal any irregularities in the rim or tyre.Latex Free It also instantly seals punctures in the tread up to 6mm and more permanently than any other sealant on the market. Another benefit of this eco version is that it's suitable for use by those with sensitivity to latex, as it is latex free.Please note: This sealant is not compatible with CO2 cartridges.Features: For two 26", 27.5" (650b) or 29" mountain bike wheels Fits rims with Presta valve hole openings Contains: 240ml Joe's eco sealant, with micro-sealing particles 2x tubeless Presta valves with removable cores 1x roll of nylon rim tape for 2 wheels 1x valve key for easy removal of the core 1x spare Presta valve core 1x Presta to Schrader adapter Weight: 60g (per strip including valve)Buy Joe's No Flats Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Weldtite Tubeless Tyre Sealant - 240ml - White - 240ml}, White
  • £6.99
  • RRP £9.99
  • Saving you £30

Weldtite Tubeless Tyre Sealant - 240mlOffering reliable self-sealing time and time again, this Weldtite Tubeless Sealant has been tested for industry-leading performance, so you can depend on it. Get all the benefits of running tubeless with this environmentally friendly formula. Maintenance and topping up is incredibly easy too as the sealant does not 'clog' up and can be injected into valve stems once the core is removed (integrated valve core removal tool as part of 240ml bottle). Tested by Ribble Weldtite Pro Cycling. Features: Size: 240ml Type: Tubeless tyre sealant Integrated valve core removal tool Prevents flat tyresManufacturer's Part Numbers: 3063Buy Weldtite Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Maxxis WelterWeight Mountain Bike InnerTube - Black - 48mm Valve, Black
  • £6.99

Maxxis WelterWeight Mountain Bike InnerTubeThis Maxxis Welter Weight MTB Tube is designed for aggressive riders who need a durable MTB tube. These middle-weight MTB tubes from Maxxis are suitable for all disciplines of MTB riding. With a wall thickness of  0.9mm, this Welter Weight MTB Tube will give you another layer of protection on the trail.Features:Wall Thickness: 0.90mmPuncture resistantWeight:27.5x1.9/2.35": 192g (Presta 48mm)27.5x1.9/2.35": 191g (Presta)27.5x2.2/2.5": 223g (Schrader)27.5x2.2/2.5": 222g (Presta)Buy Maxxis Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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LifeLine Valve Extensions Non-Removable VC - Pair - Black, Black
  • £6.99

LifeLine Valve Extensions Non-Removable VC - PairA pair of high quality valve extenders to fit presta valves with non-removable cores. Essential for inflating inner tubes mounted on deep section rims or adding additional valve clearance.LifeLine valve extenders offer quick and convenient clearance to presta valves, ideal for deep section aero rims and disc wheels etc. Before installing, ensure that the valve core of the innertube is firmly wide open to prevent it working closed under vibration from the road.FeaturesFits presta valves with non-removable valve coresExtends the valve by 60mmTextured top for a secure seal with the pump head when inflating at high pressuresSupplied as a pairBuy LifeLine Bike Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Maxxis FlyWeight Mountain Bike Inner Tube - Black - 27.5" (650b), Black
  • £6.99
  • RRP £12.99
  • Saving you £46

Maxxis FlyWeight Mountain Bike Inner TubeWith a reinforced, optimised sidewall of 0.45mm, the FlyWeight inner tubes are the lightest butyl tubes on the market. A lighter tube ensures that acceleration is increased since rotational weight is decreased significantly.Features: Material: Butyl Wall Thickness: 0.45mm Weight: 95gBuy Maxxis Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vittoria Road Inner Tube - 60mm
  • £6.99
  • RRP £7.99
  • Saving you £13

Vittoria Road Inner TubeProviding a supportive and airtight experience on every ride, this excellent inner tube from Vittoria boats a butyl synthetic rubber construction for a long-lasting and reliable performance. With 0.9mm-thick walls giving superb puncture protection and a Presta valve for easy and efficient inflation, this is an ideal addition to your tubular tyre set up. Features: Material: Butyl synthetic rubber Valve Type: Presta Wall Thickness: 0.9mmBuy Vittoria Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vittoria Road Inner Tube - 48mm
  • £6.99

Vittoria Road Inner TubeProviding a supportive and airtight experience on every ride, this excellent inner tube from Vittoria boats a butyl synthetic rubber construction for a long-lasting and reliable performance. With 0.9mm-thick walls giving superb puncture protection and a Presta valve for easy and efficient inflation, this is an ideal addition to your tubular tyre set up. Features: Material: Butyl synthetic rubber Valve Type: Presta Wall Thickness: 0.9mmBuy Vittoria Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vittoria Competition Latex Inner Tubes - 48mm Valve
  • £6.99
  • RRP £16.49
  • Saving you £58

Vittoria Competition Latex Inner TubesThese Latex Inner Tubes from Vittoria ensure a dependable riding experience wherever the road takes you. Made for Presta valves for quick and simple inflation and ideal for tubular tyres, they are the perfect investment for out-performing on race-day. Features:Material: LatexValve Type: PrestaSize: 700cUse: RoadWeight: 19-23c: 75g; 25-28c: 85g; 30c: 105gManufacturers Part Numbers:700c 19-23c Presta 48mm: 1TA00001700c 25-28c Presta 48mm: 1TA00002700c 30c Presta 48mm: 1TA00003Buy Vittoria Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Maxxis Welter Weight Road Inner Tube - Black - 60mm Valve, Black
  • £6.99

Maxxis Welter Weight Road TubeMaxxis Welter Weight tubes are engineered for aggressive riders who require durability in their inner tubes. The middle-weight tubes in the Maxxis line are targeted to all disciplines of riding. Features: 0.90mm thick walls. Puncture resistant.Buy Maxxis Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Ravemen Handlebar Light Bracket - Black - 31.8mm - 35mm, Black
  • £6.99

Ravemen Handlebar Light BracketThe Ravemen handlebar bracket is compatible with PR900/PR1200/PR1600 lights, and functions with all Ravemen front lights. This bracket loops around your handlebar and provides a stable and dependable mount for your front light.Features: Genuine Ravemen Spare Parts Solidly made for 31.8mm and 35mm diameters handlebar Made by glass fibre and nylon material, light and durable Compatibility: PR900/PR1200/PR1600 lights and all Ravemen front lights Part Number: 35420Buy Ravemen Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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LifeLine Essential Narrow Road Rear Mudguard - Black, Black
  • £6.99

LifeLine Essential Narrow Road Rear MudguardLifeLine's Essential Narrow Road Rear Mudguard is a lightweight and flexible clip-on mudguard that is UV and corrosion resistant. It is quick and very easy to install and all the mounting hardware is included. The angle adjustment gives you the perfect coverage and this mudguard fits all seatposts between 25.4mm and 31.8mm.Features:LightweightFlexibleUV and corrosion resistantQuick and easy to installAll mounting hardware includedAngle adjustment for perfect coverageFits seatposts from 25.4mm - 31.8mmBuy LifeLine Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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