Introducing the all new Nukeproof Reactor: an old school name with a very new school look. Although it takes its name from the original 1996 Nukeproof Reactor trail frame, a lot has changed in the last 23 years as it runs an all new trail focused platform.
From concept through to design, the Kinematics, the 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 thrashing the most technical trails you can point it at.
The Alloy Reactor features a custom triple butted hydro-formed tube set and carbon seat stays, which help reduce the overall weight of the frameset. Critically this reduces the unsprung weight; making the suspension as active as possible.
The Reactor is available for 27.5” or 29” wheel sizes. These are two totally different, compromise free frames that were designed and developed at the same time. Each frame is simply tailored around each wheel size.
Speed or play: which do you value more? The manoeuvrability of 27.5” or the raw speed of a 29”?
All Reactor frames feature a “flip chip” to adjust the geometry from “Trail” to “Rail mode”.
Trail – As the name suggests, this setting is best suited for trail riding. It is for riders who get as much enjoyment from the climb as the descents.
Rail – The Rail setting turns the Reactor into a corner shredder, dropping the bottom bracket 6mm and slackening the head angle by half a degree. It is there to maximise the descending capabilities.
To ensure the bike could climb as well as it descends, we designed the 4 bar horst linkage to have higher levels of anti-squat for climbing gears but lower levels when you drop down the cassette. This means that the bike can behave itself on the climbs but when you get it up to speed, it turns into a trail hooligan. The combination of low anti-squat and progressive rate give ultimate small bump compliance (removes rough trail and root chatter) 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 a good amount of pressure through the tyre to ensure 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: 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
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: 34.9mm
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
Frame Nukeproof Reactor 290 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
Fork Fox 36 Float, Factory Series, Kashima, Grip 2 Damper, 140mm, 44mm Offset, BOOST, Black (SHORT ID: D6GD)
Shock Fox Float DPX2, Factory Series, Kashima, 3 Position, EVOL, Custom CL, LRL tune, 210x50mm, Bearing End (0.2 Spacer fitted.)
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 Dissector 29”x2.4 WT 3C MaxxTerra/EXO+/TR
Crankset Shimano XT M8100 12-Speed, Hollowtech 2, 170mm, 30T, 52mm Chainline
Shifter Shimano XT M8100-R, 12-speed Rapidfire Plus, I-Spec EV
Rear Deraileur Shimano XT M8100, SGS 12-Speed, Shadow Plus
Cassette Shimano XT M8100-12, 12-Speed (HYPERGLIDE+), 10-51T
Brakes Shimano XT M8120, 4 Pot Brake, Metallic Pads
Rotors Shimano MT800, 203mm (Front), 180mm (Rear)
Handlebars Nukeproof Horizon v2 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm)
Stem Nukeproof Horizon, 50mm, Black
Grips Nukeproof Sam Hill Signature
Saddle Nukeproof Horizon SL
Seatpost : Bikeyoke Divine Stealth w Shimano SL-MT500-IL Remote lever, M/L:160mm drop; XL:185mm drop
Headset Nukeproof, 44-56 IITS
Weight 14.2Kgs/31.2lbs (Tubeless)