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Picture of Nukeproof Reactor 275 Carbon Mountain Bike Frame (2020)

Nukeproof Reactor 275 Carbon Mountain Bike Frame (2020) - £2499.99

Top Features:

  • Frame: Nukeproof Reactor 275 Carbon, 140mm Travel, UD woven Carbon Fibre front triangle/chain stays/seat stays, internal cable routing, custom tuned rear shock, Enduro bearings, threaded bottom bracket, boost 148mm rear axle spacing, 3D contoured frame protection
  • Shock: RockShox Super Deluxe Ultimate RCT, Custom ML 380 tune, 210x55mm, Bearing End (Comes with 1x bottomless token fitted so you have them if needed.)
  • Custom tuned rear shock configuration
  • Internal cable routing
  • Enduro Bearings
  • Threaded 73mm BB
  • Boost 148mm rear axle spacing
  • 3D contoured frame protection
  • 2 position adjustable Flip chip system

Product Data

  • Model Year: 2020
  • Frame: Nukeproof Reactor 275 Carbon, 140mm Travel, UD woven Carbon Fibre front triangle/chain stays/seat stays, custom tuned rear shock, Enduro bearingt, boost 148mm, 3D contoured frame protection
  • Fork: 150mm Travel
  • Steerer: Tapered
  • Bottle Cage Mounts: Single
  • Wheel Size: 27.5" (650b)
  • Brake Callipers: Post Mount
  • MTB: Yes
The all-new Nukeproof Reactor - born to be built up as a mountain-dominating ride that soars the peaks, shred trails and blast technical descents. Born to perform in all weathers over all terrains and features a RockShox Super Deluxe rear shock.


Advanced Suspension for Ultimate Trail Riding Performance

Designed from the ground up to provide the ultimate in aggressive trail riding performance, this MTB-legend features advanced suspension kinematics, modern geometry and a unique design to stand out from the crowd. Built to blast up the steepest and most technical climbs with ease and ensures you are the supreme-commander of this rig on the descents, this frame was born to thrash technical trails with more style than ever before.

Strong and Lightweight Full Carbon Fibre Frame Construction

With a full UD woven carbon fibre construction at its core, this Reactor model is engineered to provide the best strength and stiffness at a low weight. Optimised to ensure the greatest manoeuvrability and control, this 275 Reactor frame design floats across the most demanding terrain with market-leading trail-smoothing performance and confidence-inspiring aggression.

Flip Chip Adjustable Suspension Geometry

All models of the Reactor feature a "flip-chip", so that the bike geometry can be easily adjusted from "Trail" to "Rail" mode without having to custom tune your suspension setup. The Trail setting is best suited for pumping and carving your rhythm and style into the mountainside and still caters for rides who love the climb as much as the descent. On the other hand, the Rail setting turns the Reactor into an adrenaline-fuelled gravity tamer. Dropping the bottom bracket height by 6mm and slackening the head angle by half a degree, these changes give this Reactor greater stability and control when the trail leans downhill towards vertical.


Nukeproof 4-Bar Horst Linkage Suspension Design: Ensuring the bike can climb as well as it descends, Nukeproof focussed on fine-tuning their 4-Bar Horst linkage suspension setup to give higher levels of anti-squat performance when higher up the cassette in the climbing gears, but also to deliver greater trail-gobbling performance when you drop down the cassette and begin descending the mountain. This means that the bike behaves itself on the climbs and grips with unprecedented traction and efficiency when making your way back towards sea-level. When you get it up to speed and drop a few gears to carry momentum, this bike turns into a trail hooligan and helps you carve the trail with style. The combination of low anti-squat and progressive suspension-rate give it the ultimate in small bump compliance (removes rough trail and root chatter) with good mid-stroke support for cornering/pumping and end stroke progression for aggressive riding. With balanced anti-rise suspension performance, the Reactor provides some squat when braking hard, maintaining rider position and providing a good amount of pressure through the tyre to ensure stability and traction. The Reactor is designed to reward the rider and ensure you get that stoke factor in on any ride.


Material: Ultra Strong T700/800 Monocoque Carbon Fibre
Fork Travel: 150mm
Axle to Crown: 545mm
Fork Offset: 46mm
Shock Travel: 140mm
Wheels Size: 27.5"
Max Tyre Size: 2.6"
Shock Size: 210x55mm
Shock Hardware F: 25x8mm
Shock Hardware R: 30x8mm
Headtube: 44-56mm Tapered Semi-Integrated
Headset: ZS44-28.6 - T2 / ZS56/40 - B8
Bearings Required: 2x NP-5 (6902 2RS), 4x NP-7 (6800 2RS), 4x NP-106 (6901 2RS)
Seatpost: 31.6mm (Internal Routing for Dropper Seatpost)
Seat Clamp: 36.4mm
BB: Threaded 73mm BSA
Rear Hub: Boost 148x12mm
Rear Axle: Sram Maxle Stealth M12x1.75 180mm
Chain Guide: ISCG05
Brake Mount: 180mm Direct Post
Protection: 3D Contoured Rubber Frame Protection for DT/SS/CS

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