Nukeproof Reactor 290 ST Factory Carbon Bike
Crosscountry/backcountry/upcountry/downcountry: However you define it, the new Reactor ST does it all and everything in between! It just might be the most versatile bike we have ever made.
Introducing the all new Nukeproof Reactor 290 ST; a limited edition lightweight, short travel version of the Reactor that is designed to tackle serious miles efficiently and comfortably, for all day fun in the saddle.
With a 130mm fork combined with 125mm of rear suspension, the Reactor ST combines the best of an enduro bike (long, low and slack) with the best of an XC Race bike (lightweight spec and efficient suspension) to create a sprightly yet seriously capable machine.
To optimise the weight, strength and stiffness, the Reactor 290 ST Carbon frame features a full UD woven carbon fibre frame set (Including chain and seat stays).
The Reactor ST features a 66.8° (66.3° Low) Headangle atop a 76.3° (75.8° Low) seat angle across a 460mm reach on a Medium frame. We also offer the frame in Large and X-Large sizes. The Reactor ST frames feature the same “flip chip” design as the regular Reactor frame 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 ST into a more aggressive machine, 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 ST some squat when braking hard, maintaining rider position and providing a good amount of pressure through the tyre to ensure traction. The Reactor ST is designed to reward the rider and ensure you get that stoke factor in on any ride.
|Reactor 290 Carbon|
|Material:||Ultra Strong T700/800 Monocoque Carbon Fibre|
|Axle to Crown:||537mm|
|Max Tyre Size:||2.6″|
|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)|
|BB:||Threaded 73mm BSA|
|Rear Hub:||Boost 148x12mm|
|Rear Axle:||Sram Maxle Stealth M12x1.75 180mm|
|Brake Mount:||180mm Direct Post|
|Protection:||3D Contoured Rubber Frame Protection for DT/SS/CS|
|Frame||Nukeproof Reactor 290 Carbon, 125mm 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 34 Float, Factory Series, Kashima, Fit 4 Damper, 130mm, 51mm Offset, BOOST, Black|
|Shock||Fox Float DPS, Factory Series, Kashima, 3 Position, EVOL, Custom LCL, LRL, CMF tune, 5mm, Bearing End (0.2 Spacer fitted.)|
|Front Wheel||DT Swiss XM1501 SPLINE 25,29", Centrelock, 110x15mm|
|Rear Wheel||DT Swiss XM1501 SPLINE 25, 29", Centrelock, Shimano Microspline Driver, 148x12mm|
|Tyres||Maxxis Rekon Race 29”x2.35 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 M8100, 2 Pot Brake, Metallic Pads|
|Rotors||Shimano MT800, 180mm|
|Handlebars||Nukeproof Horizon Carbon 25mm Rise, Width - M780mm, L800mm, XL800mm)|
|Stem||Nukeproof Horizon, 50mm, Black|
|Grips||Nukeproof Sam Hill Signature|
|Saddle||Nukeproof Horizon SL, Orange|
|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|
|Ultra Strong T700/800 Monocoque Carbon Fibre|
|Trail/ Rail flip chip|
|Threaded 73mm BSA|
|Boost 148mm Rear axle spacing|
|Effective Top Tube||NA||608||638||673|
|Head Angle||NA||66.8 (Rail 66.3)||66.8 (Rail 66.3)||66.8 (Rail 66.3)|
|Effective Seat Tube Angle||NA||76.3 (Rail 75.8)||76.3 (Rail 75.8)||76.3 (Rail 75.8)|
|Bottom Bracket Drop||NA||-39mm (Rail: -45mm)||-39mm (Rail: -45mm)||-39mm (Rail: -45mm)|
|Axle to Crown||NA||537mm||537mm||537mm|
|Seat Post Diameter||---||31.6mm||31.6mm||31.6mm|
|Headset Type||---||ZS 44mm 56mm Semi Integrated||ZS 44mm 56mm Semi Integrated||ZS 44mm 56mm Semi Integrated|
|Bottom Bracket Type||---||Threaded 73mm BSA||Threaded 73mm BSA||Threaded 73mm BSA|