Nukeproof Reactor 275 Carbon RS

Nukeproof Reactor 275 Carbon RS

Product information


Available color
Spec Score
Price Value


The Nukeproof Reactor 275 Carbon RS is a high-end mountain bike with impressive components. It features a carbon fiber frame with internal cable routing and 140mm of travel, along with a RockShox Lyrik Ultimate Charger 2 RC2 fork with 160mm of travel. The bike has SRAM Code RSC brakes and a SRAM X01 ASX Eagle 12-Speed rear derailleur. The DT Swiss XM1700 Spline 30 wheels come with Maxxis Assegai and Dissector tires. This bike is designed for serious mountain biking, with travel and components that can handle tough terrain.


  • Premium Carbon Frame
  • Good Weight in this Class
  • Best brakes in class
  • Best suspension components
  • Top reviews from the bike magazines
  • High resale value

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SRP5999 £
Travel Front160 mm
Travel Rear140 mm
Weight13.7 kg
Wheels27.5 Aluminum
Frame MaterialCarbon
GroupsetSram SX EAGLE
ForkRockShox Lyrik Ultimate
ShockRockShox Super Deluxe
BrakesSram CODE RSC



Paul Burwell

If you’re a rider that’s focused on shredding singletrack rather than bike parks, the Nukeproof Reactor Pro 290 Alloy is a superb mid-travel trail bike

  1. Superb balance, insanely fast singletrack shredder
  1. A little lightweight for burlier riders


Jessie-May Morgan

The Reactor trail bike bike first graced singletrack last year, entering Nukeproof’s mountain bike line-up between the Scout and the Mega enduro bike. We tested the 140mm all-mountain bike on Aberdeenshire’s finest – check out our first ride review...

Vital MTB


Trail Bike Hooligan: Nukeproof Reactor 275 RS Nukeproof's take on the short/mid-travel trail bike turns out to be very capable - and tons of fun to ride.

  1. Fun factor!
  2. Confidence-inspiring geometry
  3. Rear suspension is perfectly balanced small/big hits
  4. Lyrik Ultimate – plush and well controlled
  5. Versatile build options
  6. Flip Chip adjustability
  1. Average rear hub engagement
  2. Rims cause snakebites and had tubeless issues in test
  3. Can be a bit tricky finding the balance between front and rear suspension
  4. Could have a steeper seat tube angle
  5. Not the very best pedaling efficiency
  6. Finish is perfectible


Mike Kazimer

Some bikes seem to dictate the type of rides you'll be going on – a lightweight cross-country whip isn't likely to lead you into the bike park, just like you probably won't find yourself at the start of a hill climb competition aboard a DH bike. It's a...

  1. Seat tube angle could be steeper
  2. Cable routing isn't fully refined
  3. Doesn't feel much different than an enduro bike

ENDURO Mountainbike Magazine

The Nukeproof Reactor 275 RS is awesome fun to ride. In its 27.5” guise, the Reactor is best suited for a rider looking for a do-it-all trail bike who prioritises fun over flat-out charging. If you want a more planted bike with greater ability to carry...


Alex Evans

Sitting firmly between disciplines, the Reactor is an average XC bike but a fantastic trail bike with a spec that makes it enduro-capable

  1. Great spec, balanced frame feel, good looks
  1. Big forks, brakes and wheels can lull you into a false sense of security and the bike can get out of its depth

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Nukeproof Reactor 275 Carbon, 140mm Travel, UD woven Carbon Fibre frame, internal cable routing, ISCG 05 mounts, Enduro bearings, Threaded 73mm BB, Boost 148mm rear axle spacing, 3D contoured rubber frame protection
Frame Sizes
S, M, L, XL, XXL
Frame Colors
Raw Ud Carbon


RockShox Lyrik Ultimate Charger 2 RC2 160mm, 46mm Offset, BOOST, Debonair, Gloss Red
Rear Shock
RockShox Super Deluxe Ultimate RCT, Custom Compression LIN / Rebound L 320 tune, 210x55mm, Bearing End, 1x bottomless token fitted.


Nukeproof Horizon, 45mm, Black
Nukeproof Horizon Carbon V2 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm
Nukeproof Sam Hill Signature


Rear Derailleur
SRAM X01 ASX Eagle 12-Speed, Red
Shift Levers
SRAM XO1 Eagle 12-Speed, CS XG1295 EAGLE 10-52T
SRAM GX Eagle 12-Speed
SRAM X1 Carbon Eagle 12-Speed, 170mm, 32T, B148, DUB
Bottom Bracket
BSA, 73mm, threaded


Front Brake
SRAM Code RSC Sintered Pads
Shift Levers


Front Rim
DT Swiss XM1700 Spline 30 27.5", 6 Bolt, 110x15mm
Rear Rim
Front Tyre
DT Swiss XM1700 Spline 30 27.5", 6 Bolt, 110x15mm

Geometry Nukeproof Reactor 275 Carbon RS

SizeReactor 275 150mm Fork (Carbon)Reactor 275 160mm Fork (Carbon)
Seat Tube Length (mm)508508
Seat Tube Angle75.575.1
Head Tube Length (mm)125125
Head Tube Angle6665.5
Top Tube Length (mm)673674.3
Chainstay Length (mm)428428
Wheelbase (mm)12451249
Standover (mm)735742
Stack (mm)611.5615.3
Reach (mm)514509.5
BB Offset (mm)-18-15
Trail (mm)139140
Fork Rake Offset (mm)4646

Customer questions & answers

FAQ Nukeproof Reactor 275 Carbon RS

How heavy is the Bike?

The Reactor 275 Carbon RS weights 13,70 kg. Thats roughly 30,2 pounds

What material is the frame of the Nukeproof Reactor 275 Carbon RS?

The Nukeproof Reactor 275 Carbon RS ist crafted with Carbon

What is the recommended price given by the manufacturer Nukeproof?

The SRP Price is our information at 5999 GBP

Where das the Brand Nukeproof is originated?

Nukeproof is a Company from Great Britain