2021 Nukeproof Reactor 275 Factory
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.
Frame Construction:
To optimise the weight, strength and stiffness, the Reactor Carbon frame features a full UD woven carbon fibre frameset (Including chain and seat stays). It 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”?
Adjustable Geometry:
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.
Suspension Design:
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.
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 |
Fork | Fox 36 Float, Factory Series, Kashima, Grip 2 Damper, 140mm, 44mm Offset, BOOST, Black (SHORT ID: D6GD) |
Rear 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 29â€x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Dissector 29â€x2.4 WT 3C MaxxTerra/EXO+/TR |
Crankset | Shimano XT M8100 12-Speed, Hollowtech 2, 170mm, 30T, 52mm Chainline |
Shift Levers | Shimano XT M8100-R, 12-speed Rapidfire Plus, I-Spec EV |
Rear Derailleur | 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) |
Bar | 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) |
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