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

LifeLine Essential Mini-Maintenance Workstand - Black - One Size}, Black
  • £9.99
  • RRP £11.99
  • Saving you £17

LifeLine Essential Mini-Maintenance WorkstandThe LifeLine Essential Mini-Maintenance Stand provides a simple, no nonsense floor standing option for your bike by holding the frames rear stays and lifting the rear wheel of the ground. Suitable for all wheel sizes, it's very useful when you want to give your gears a quick tune without folding out your larger workshop stand, or if you just want to keep your bike upright in the garage.Features:  Lightweight maintenance stand  Fits a wide variety of wheel sizes (26", 27.5", 29" & 700c)  Packs away easily  Convenient way to accurately tune your gearsBuy LifeLine Workshop from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Stolen Thermalite Pivotal Seatpost - Black, Black
  • £9.99
  • RRP £15.99
  • Saving you £38

Stolen Thermalite Pivotal SeatpostReady for long days nailing your favourite tricks at the park and cruising in the street, this seatpost is specifically engineered for the demands of modern BMX riding. It features a proprietary thermalite build that's material combines nylon 66 base with a 50% long glass fibre infusion for a superior strength to weight ratio. This makes it incredibly tough and dependable on your ride without weighing it down with unnecessary grams.Features: Material: Thermalite (Nylon 66 base with 50% long glass fibre infusion) Use: BMX Diameter: 25.4mm Length: 150mm Type: Pivotal Weight: 79gBuy Stolen Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Brand-X Mountain Bike Stem - Black with Silver Bolts - 1.1/8", Black with Silver Bolts
  • £9.99
  • RRP £12.99
  • Saving you £23

Brand-X Mountain Bike StemThe Brand-X Mountain Bike Stem is constructed from 3D forged aluminium ensuring it is incredibly durable and strong, without compromising on weight. Featuring a flip design which ensures the front end stays low, it is made for a clamping zone of 31.8mm, making it the perfect choice for a 29" or 27.5" bike.  Features:Sizes: 60, 70 + 80mm LengthsRise: 7 DegreesClamp Diameter: 31.8Material: 3D Forged AluminiumFinish: AnodisedColour: BlackEN-M ApprovedWeight: 146 grams (60mm)Buy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Brand-X Enduro Mountain Bike Stem - Black - 1.1/8", Black
  • £9.99
  • RRP £17.99
  • Saving you £44

Brand-X Enduro Mountain Bike StemCreated from a 3d forged aluminium construction, this stem is highly durable and stiff, yet also incredibly lightweight, so you can tackle whatever challenges you meet on the trails. Designed to be used alongside a bar with a clamping zone of 31.8mm, it is available in lengths of 40, 50 and 60mm.The Flip/Flop design allows the user to easily run it upside down to help keep the front end low; ideal for a 29” or 27.5” bike, where the front tends to be higher than you may want.Features:Sizes: 40mm, 50mm, 60mmRise: 3 degreesClamp Diameter: 31.8mmMaterial: 3D Forged AluminiumFinish: AnodisedColour: BlackEN-M ApprovedWeight: 114g (40mm), 131g (50mm) and 134g (60mm)Buy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store. 

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Seal BMX Switch Top Load Stem - Black - 1.1/8", Black
  • £9.99
  • RRP £12.99
  • Saving you £23

Seal BMX Switch Top Load StemMade from lightweight alloy, the Seal BMX Switch Top Load Stem features a classic top load design with a 50mm reach and 30mm stack height.Features: Material: AlloySteerer Clamp Diameter: 1 1/8" Reach: 50mm Stack Height: 30mm Top load stem Buy Seal BMX Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Syncros 6061 Alloy Stem - Black-White - 7 Degrees}, Black-White
  • £9.99
  • RRP £29.99
  • Saving you £67

Syncros 6061 Alloy StemThis mountain bike (MTB) stem is specifically designed for the rigours of modern trail riding and all mountain exploring. It comes equipped with a hard-wearing 6061 alloy build to ensure a strong and secure connection between your handlebar and your fork's steerer tube. Suitable for use on handlebars with a 31.8mm bar clamp diameter and forks with a 1 1/8" steerer diameter, this is a great choice of upgrade for holding your steering set-up together as you conquer your way around the mountain.Features: Material: 6061 Alloy Use: Mountain Bike (MTB) Bar Clamp Diameter: 31.8mm Steerer Diameter: 1 1/8"Manufacturer's Part Numbers: 91360060002 Black/White 110mm 7 Degrees 91360060004 Black/White 80mm 12 Degrees 91360060006 Black/White 110mm 12 DegreesBuy Syncros Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Syncros TR1.5 Alloy Stem - Black-Grey - 1.1/8", Black-Grey
  • £9.99
  • RRP £29.99
  • Saving you £67

Syncros TR1.5 Alloy StemAll set for the next trail adventure, this MTB stem features a high-grade alloy build to achieve the perfect balance of strength, stiffness and weight. Syncros has also put this model through a sandblasting process for extra protection against wear as well as an anodising finishing process for corrosion resistance. This allows it to deliver a strong and secure connection for your steering setup in all weather conditions. Compatible with handlebars that feature a 31.8mm bar clamp diameter and forks with a 1 1/8" steerer diameter, it's engineered to ensure a dependable hold as you tackle the more demanding of terrain conditions.Features: Material: Alloy Finish: Sandblasted and Anodised Use: Mountain Bike (MTB) Bar Clamp Diameter: 31.8mm Steerer Diameter: 1 1/8" Faceplate: 4-boltBuy Syncros Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Neutron Bottom Headset Cup - Black - EX34-30 - B1}, Black
  • £9.99
  • RRP £19.99
  • Saving you £50

Nukeproof Neutron Bottom Headset CupNukeproof's Neutron Bottom Headset Cup is now available as both separate top and bottom cups, so you can choose the option that you need.  The cups will allow you to replace only the bearings with the Nukeproof Steel Bearing or the upgraded Nukeproof Ti coated bearing with stainless balls. Precision-engineered to the most exacting of tolerances to deliver optimum performance and long life in harsh riding conditions.The latest generation of headsets has been revised, improved and expanded for optimum fit, sealing and performance as well as compatibility with a wide range of fork and frame standards. Featuring sealed angular contact bearings, split alloy crown races and upper and lower bearing cups CNC-machined from proprietary aluminium, the headset offers the optimum balance of lightweight, strength and durability for performance across all riding disciplines.The headset is available in a range of options to cover multiple fork/headtube configurations, including a full range of Standard Steerer (SS – 1-1/8') and Tapered Steerer (TS – 1-1/8' to 1.5') combinations. Internal and external cup options also available including zero-stack versions with internal top and bottom cups.All models feature a super tough black hard anodised finish, with laser-etched graphics.Don't know which headset you need? No problem! Simply use our Headset Technical Guide which includes a Headset Finder. Features:Specific Bottom Headset cupReplaceable angular contact bearingsLaser-etched graphics (including code)Split Alloy Crown Race for easy installation/removal Hard Anodised FinishInternal and external optionsReducer crown race for 1.5' availableBuy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Neutron Bottom Headset Cup - Black - ZS56-40 - B8}, Black
  • £9.99
  • RRP £19.99
  • Saving you £50

Nukeproof Neutron Bottom Headset CupNukeproof's Neutron Bottom Headset Cup is now available as both separate top and bottom cups, so you can choose the option that you need.  The cups will allow you to replace only the bearings with the Nukeproof Steel Bearing or the upgraded Nukeproof Ti coated bearing with stainless balls. Precision-engineered to the most exacting of tolerances to deliver optimum performance and long life in harsh riding conditions.The latest generation of headsets has been revised, improved and expanded for optimum fit, sealing and performance as well as compatibility with a wide range of fork and frame standards. Featuring sealed angular contact bearings, split alloy crown races and upper and lower bearing cups CNC-machined from proprietary aluminium, the headset offers the optimum balance of lightweight, strength and durability for performance across all riding disciplines.The headset is available in a range of options to cover multiple fork/headtube configurations, including a full range of Standard Steerer (SS – 1-1/8') and Tapered Steerer (TS – 1-1/8' to 1.5') combinations. Internal and external cup options also available including zero-stack versions with internal top and bottom cups.All models feature a super tough black hard anodised finish, with laser-etched graphics.Don't know which headset you need? No problem! Simply use our Headset Technical Guide which includes a Headset Finder. Features:Specific Bottom Headset cupReplaceable angular contact bearingsLaser-etched graphics (including code)Split Alloy Crown Race for easy installation/removal Hard Anodised FinishInternal and external optionsReducer crown race for 1.5' availableBuy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Neutron Bottom Headset Cup - Black - EX44-40 - B5}, Black
  • £9.99
  • RRP £19.99
  • Saving you £50

Nukeproof Neutron Bottom Headset CupNukeproof's Neutron Bottom Headset Cup is now available as both separate top and bottom cups, so you can choose the option that you need.  The cups will allow you to replace only the bearings with the Nukeproof Steel Bearing or the upgraded Nukeproof Ti coated bearing with stainless balls. Precision-engineered to the most exacting of tolerances to deliver optimum performance and long life in harsh riding conditions.The latest generation of headsets has been revised, improved and expanded for optimum fit, sealing and performance as well as compatibility with a wide range of fork and frame standards. Featuring sealed angular contact bearings, split alloy crown races and upper and lower bearing cups CNC-machined from proprietary aluminium, the headset offers the optimum balance of lightweight, strength and durability for performance across all riding disciplines.The headset is available in a range of options to cover multiple fork/headtube configurations, including a full range of Standard Steerer (SS – 1-1/8') and Tapered Steerer (TS – 1-1/8' to 1.5') combinations. Internal and external cup options also available including zero-stack versions with internal top and bottom cups.All models feature a super tough black hard anodised finish, with laser-etched graphics.Don't know which headset you need? No problem! Simply use our Headset Technical Guide which includes a Headset Finder. Features:Specific Bottom Headset cupReplaceable angular contact bearingsLaser-etched graphics (including code)Split Alloy Crown Race for easy installation/removal Hard Anodised FinishInternal and external optionsReducer crown race for 1.5' availableBuy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Seal BMX Progression Integrated Headset - Black, Black
  • £9.99
  • RRP £12.99
  • Saving you £23

Seal BMX Progression Integrated HeadsetThe Seal BMX Progression Integrated Headset features super smooth, fully sealed bearings suitable for a 1 1/8" integrated headsetFeatures: Compatibility: Integrated, 1 1/8" steerer tubeSuper smooth Fully sealedBuy Seal BMX Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Sam Hill Top Cap Ti Bolt and Star Nut - Black - 1.1/8", Black
  • £9.99

Nukeproof Sam Hill Top Cap Ti Bolt and Star NutNukeproof Sam Hill Top Cap Ti BoltThe ideal accompaniment to your Nukeproof Sam Hill Horizon stem, this titanium-made top cap and bolt combo provide a fine finish to your cockpit. Low-weighted to save on bulk, it has a neat crown and logo design, as well as Sam Hill's initials to show its prowess. Click here to view how to change and fit your Nukeproof Top Cap.Features: Material: Titanium Bolt Length: 20mm Weight: 12g (cap and bolt)Buy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Brand-X Headset Compression Device- Carbon Cap - Black - 1.1/8", Black
  • £9.99
  • RRP £12.99
  • Saving you £23

Brand-X Headset Compression Device- Carbon CapComing equipped with a stiff carbon top cap and body construction, this compression device offers excellent strength and durability. It is specifically engineered to compress your headset together safely and securely when using a carbon fork with a carbon steerer tube. Coming complete with a stainless steel bolt and weighing in at only 37g, this is a perfect choice for compressing your headset together.Features: Top Cap Material: Carbon Body Material: Alloy Bolt Material: Stainless Steel Fork Tube ID: 22 - 25.4mm Depth of Body: 18mm Weight: 37gManufacturer's Part Number: BXCOMPDEVCARBONCAP Black 1 1/8"Buy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Brand-X Integrated IS42 - IS52 Tapered Headset - Black - 8mm Top Cover, Black
  • £9.99
  • RRP £14.99
  • Saving you £33

Brand-X Integrated IS42 / IS52 Tapered HeadsetThis tapered headset comes equipped with a hard-wearing 6061 alloy construction for an excellent balance of strength and durability. Brand-X has also put this model through a CNC forging and machining process, which removes any unnecessary excess material, while still maintaining maximum strength. As a result, it offers an excellent strength-to-weight ratio. Another highlight is its angular contact sealed bearings that ensure smooth and dependable performance in all weather conditions. Comes complete with a top cap and star nut.Features: Material: CNC forged and machined 6061 Alloy Size: IS41 Top / IS52 Bottom Angular contact sealed bearings Includes: Top cap and Star NutManufacturer's Part Number: BXINTIS42IS5245X45TH Black IS42 / IS52 45x45 DegBuy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Brand-X Threadless 34EESS Sealed Headset - Black - 34EESS Sealed}, Black
  • £9.99
  • RRP £14.99
  • Saving you £33

Brand-X Threadless 34EESS Sealed HeadsetComing kitted out with a robust alloy construction, this headset is engineered for the demands of modern riding. Brand-X has also put this model through its CNC forging and machining process to remove any unnecessary excess material, while still maintaining maximum strength. This allows it to achieve a superior strength-to-weight ratio for smooth and secure steering performance without any weight penalty. One final highlight is its angular contact sealed bearings that deliver reliability in all weather conditions. Comes complete with a top cap and a star nut to complement your ride.Features: Material: CNC forged and machined 6061 Alloy SHIS Norm: EC34 28.6 EC34 30 Height: 29mm Angular contact sealed bearings Includes: Top cap and Star NutManufacturer's Part Number: BXTHREADLESS34EESSH Black 34EESS SealedBuy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Blank Compound Alloy BMX Pedals - Polished, Polished
  • £9.99
  • RRP £16.49
  • Saving you £39

Blank Compound Alloy BMX PedalsBlank's Compound Alloy Pedals offer great strength and durability from the use of 6061 aluminium alloy. Also providing excellent grip, these pedals are ideal for ripping your BMX around your local streets and parks. Features:Material: 6061 Aluminium AlloySuper strongMoulded pinsLow profile designLoose ball bearings9/16" CrMo axleDimensions: 110x102x21mmWeight: 430gBuy Blank Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Blank Compound Alloy BMX Pedals - Black - 9/16", Black
  • £9.99
  • RRP £16.49
  • Saving you £39

Blank Compound Alloy BMX PedalsBlank's Compound Alloy Pedals offer great strength and durability from the use of 6061 aluminium alloy. Also providing excellent grip, these pedals are ideal for ripping your BMX around your local streets and parks. Features:Material: 6061 Aluminium AlloySuper strongMoulded pinsLow profile designLoose ball bearings9/16" CrMo axleDimensions: 110x102x21mmWeight: 430gBuy Blank Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Look Keo Road Cleat Covers - Black, Black
  • £9.99

Look Keo Road Cleat CoversProtect your cleats with Look's Kéo Cleat Cover. It has an anti-slip material which provides plenty of friction when walking in your cycling shoes and it is compatible with all Kéo cleats.Features:Cleats protectionAnti-slipCompatible with all cleatsBuy Look Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Horizon CL-CS Cleats Shimano Compatible - Black - 4 Degree}, Black
  • £9.99

Nukeproof Horizon CL-CS Shimano SPD MTB CleatsThese SPD cleats are the ideal for use with for your Nukeproof Horizon CL/CS pedals or if you want an alternative float amount for your foot.Features: Compatible with either Nukeproof Horizon CL or CS model Designed for use with SPD compatible shoes and all Shimano SPD pedalsBuy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Nukeproof Horizon CL-CS Cleats Shimano Compatible - Black - 8 Degree}, Black
  • £9.99

Nukeproof Horizon CL-CS Shimano SPD MTB CleatsThese SPD cleats are the ideal for use with for your Nukeproof Horizon CL/CS pedals or if you want an alternative float amount for your foot.Features: Compatible with either Nukeproof Horizon CL or CS model Designed for use with SPD compatible shoes and all Shimano SPD pedalsBuy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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