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The Reactor 290 Carbon is a trail bike that thrives in technical terrain, both up and down. Designed for riders who want one bike to do it all.
The Reactor 290 Carbon is a trail bike that thrives in technical terrain, both up and down. Designed for riders who want one bike to do it all.
Nukeproof

Nukeproof Reactor Carbon RS 29 T-GX Mountain Bike - Gloss Candy Red

£5,399.10
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Nukeproof Reactor Carbon RS 29 T-GX Mountain Bike - Gloss Candy Red

Season:2026

Brand:Nukeproof

Code:rec01asSramTransmissionGX

The Reactor 290 Carbon is a trail bike that thrives in technical terrain, both up and down.

Designed for riders who want one bike to do it all, the Reactor balances aggressive descending capabilities with efficient pedaling performance. From concept through to design, the kinematics, geometry, and specification, the Reactor is designed from the ground up to be the ultimate aggressive trail bike. It is at home on technical climbs, but happiest when tackling the most technical trails.

To optimize the weight, strength, and stiffness, the Reactor Carbon frame features a full UD woven carbon fiber frameset, including the chain and seat stays. This design is built for long days in the saddle, excelling on epic adventures where a 1000m climb is followed by a 1000m descent. Its versatile nature ensures it handles both with ease.

All Reactor frames feature a “flip chip” to adjust the geometry from “Trail” to “Rail mode.” The Trail setting is best suited for general trail riding, ideal for riders who enjoy the climb as much as the descent. The Rail setting turns the Reactor into a corner shredder, dropping the bottom bracket 6mm and slackening the head angle by half a degree to maximize descending capabilities.

To ensure the bike could climb as well as it descends, Nukeproof engineers designed the 4-bar Horst linkage to have higher levels of anti-squat for climbing gears but lower levels when dropping down the cassette. This combination of low anti-squat and progressive rate gives ultimate small bump compliance with good mid-stroke support for cornering/pumping and end-stroke progression for aggressive riding. Balanced anti-rise figures allow the Reactor some squat when braking hard, maintaining rider position and providing pressure through the tire to ensure traction.

Features:

  • Nukeproof Reactor 290 Carbon, 130mm Rear Travel, UD woven Carbon Fibre front triangle/chain stays/seat stays, internal cable routing
  • RockShox Pike Select+ RC Charger2 140mm Suspension Fork
  • RockShox Super Deluxe Select+ RT, Custom CL, LRL tuned Rear Shock
  • DT Swiss M1700 Spline Wheelset
  • Sram GX Eagle 12-Speed Groupset
  • RockShox Reverb Stealth with remote dropper seatpost
Technical Information
  • Frame
    Nukeproof Reactor 290 Carbon, 130mm Rear 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
  • Fork
    RockShox Pike Select + Charger 2 RC 140mm, 51mm Offset, BOOST, Debonair, Diffusion Black
  • Shock
    RockShox Super Deluxe Select+ RT, Custom ML 380 tune, 210x50mm, Bearing End (Comes with 1x bottomless token fitted so you have them if needed.)
  • Front wheel
    DT Swiss M1700 SPLINE 30,29", Centrelock, 110x15mm
  • Rear wheel
    DT Swiss M1700 SPLINE 30, 29", Centrelock, Shimano Microspline Driver, 148x12mm
  • Tyres
    Front: Maxxis Assegai 29”x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Minion DHR II 29”x2.4 WT 3C MaxxTerra/EXO+/TR
  • Crankset
    SRAM GX Eagle 12-Speed, 170mm, 30T, B148, DUB
  • Shifter
    SRAM GX Eagle 12-Speed
  • Rear deraileur
    SRAM GX Eagle 12-Speed
  • Cassette
    SRAM GX Eagle 12-Speed, CS PG1275 EAGLE 11-50T
  • Brakes
    SRAM Guide RE
  • Rotors
    SRAM Centerline 200mm (Front), 180mm (Rear)
  • Handlebars
    Nukeproof Horizon 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm)
  • Stem
    Nukeproof Horizon, 50mm, Black
  • Grips
    Nukeproof Sam Hill Signature
  • Saddle
    Nukeproof Horizon SL, Yellow
  • Seatpost
    RockShox Reverb Stealth with 1x Remote, 31.6mm; S: 346mm length, 125mm drop; M: 409mm length, 150mm drop; L: 462mm length, 175mm drop; XL: 514.5mm length, 200mm drop
  • Headset
    Nukeproof, 44-56 IITS
  • Material
    Ultra Strong T700/800 Monocoque Carbon Fibre
  • Fork travel
    140mm
  • Axle to crown
    554mm
  • Fork offset
    51mm
  • Shock travel
    130mm
  • Wheels size
    29″
  • Max tyre size
    2.6″
  • Shock size
    210x50mm
  • Shock hardware f
    25x8mm
  • Shock hardware r
    30x8mm
  • Sizing
    M/L/XL
  • 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
Sizing Information
SMALLMEDIUMLARGEX-LARGEXX-LARGE
AReach435460480500520
BStack620.24629.26638.29647.31656.34
CEffective Top Tube Length578.2605.28621.5643.51665.51
DSeattube Length380410440470500
EEffective Seattube AngleLow 77° / High 77,5°Low 77° / High 77,5°Low 77° / High 78°Low 77° / High 78°Low 77° / High 78°
FSeattube Angle (Actual)Low 70.5° / High 71Low 70.5° / High 71Low 70.5° / High 71Low 70.5° / High 71Low 70.5° / High 71
GSaddle Height at Saddle Offset650700750800850
HSaddle Offset at Saddle HeightLow 146.4 High 146.6Low 164.4 High 163.4Low 174.2 High 172.9Low 191.8 High 189.5Low 209.4 High 206.2
IHeadtube Length100110120130140
JHeadtube AngleLow 64.5° / High 65°Low 64.5° / High 65°Low 64.5° / High 65°Low 64.5° / High 65°Low 64.5° / High 65°
KChainstay Length440440445445445
LFront Centre758.8788.07812.38836.68860.99
MWheelbase1198.81228.071257.381281.681305.99
NBottom Bracket Drop (Front/Rear)Low -39 / High -33Low -39 / High -33Low -39 / High -33Low -39 / High -33Low -39 / High -33
OBottom Bracket HeightLow 330 / High 336Low 330 / High 336Low 330 / High 336Low 330 / High 336Low 330 / High 336
PStand Over Height745750755760765
QFork Travel150150150150150
RTrail132132132132132
SFork Offset4242424242
TAxle to Crown561561561561561
UMaximum Seatpost Insert210240265295320
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