From raw concept to refined kinematics, the Nukeproof Reactor Alloy 290 is engineered from the ground up to dominate the aggressive trail category. It scales technical ascents with surgical precision but truly awakens when pointed down the fall line. Crafted from hydroformed, custom-butted 6061-T6 aluminum, it strategically integrates carbon fiber seatstays to drastically reduce unsprung mass and optimize lateral rigidity. The result is a chassis that perfectly balances race-day weight with bombproof strength. This is your definitive all-mountain weapon built for epic 1,000m climbs and descents. The Reactor Alloy is anchored by a progressive geometry chart that balances surgical agility with all-day pedaling efficiency. A long, low, and slack posture guarantees absolute confidence on high-speed descents, while the steepened 77 degree effective seat tube angle places you in the optimal biomechanical position to conquer punishing climbs. Its four-bar Horst Link platform pushes 140mm of rear travel, meticulously tuned for off-the-top suppleness to maximize traction, backed by a robust mid-stroke to keep the bike popping out of corners. As you push deeper into the travel, the anti-squat curve deliberately drops off, isolating pedal kickback and keeping the chassis glued to the dirt through the roughest chunk. By utilizing the integrated Trail or Rail flip-chip, you can instantly transform the bike from an efficient mileage-crusher to a planted, gravity-hungry brawler. Every millimeter of the Reactor is hyper-focused on the rider’s real-world experience, blending elite performance with mechanic-friendly practicality. The front triangle easily swallows a full-size 750ml bottle, while a dedicated top tube accessory mount handles your backcountry spares. We’ve carved out massive mud clearance for high-volume 2.6-inch rubber to thrive in atrocious conditions, and specced premium MAX bearings across all pivots for maximum longevity. Servicing is beautifully straightforward: accessible hardware, standard Allen key fittings, and laser-etched torque specs eliminate workshop headaches. The fully guided tube-in-tube internal routing delivers a pristine, silent aesthetic, while custom 3D-contoured rubber armor silences chain slap and guards against violent rock strikes. This is a trail-proven rig engineered to endure. Mastering the intersection of toughness and precision, the Reactor Alloy relies on its hybrid construction: a stout 6061-T6 aluminum front triangle and chainstay for impact resistance, paired with a carbon seatstay to dial in the vertical compliance. This composite architecture yields a ride that is exceptionally lively yet predictable razor-sharp when pumping through berms, but forgiving through the chunder. Every junction is structurally optimized for an unmatched strength-to-weight ratio. But the true magic is in its adaptability. The proprietary "Trail or Rail" flip-chip allows you to manipulate the geometry on demand. Run it in Trail mode for an elevated, balanced pedaling platform, or drop it into Rail mode to slam the bottom bracket and slacken the head angle for maximum cornering authority. Furthermore, the rear triangle can accommodate a dedicated MX (mullet) flip-chip, allowing you to run a 27.5" rear wheel without compromising the bike's dialed suspension kinematics. ________Specifications: Frame Nukeproof Reactor V2 290 Alloy, Nukeproof Yellow, 140mm Travel, custom triple butted hydro-formed tube set for front triangle and chain stays, UD woven carbon fibre seat stays, internal cable routing, ISCG 05 mounts, Max Bearings, Threaded 73mm BB, Boost 148mm rear axle Fork RockShox Lyrik Select +, Charger 3.1 RC2, 29" Boost 15x110mm Maxle Stealth, Debonair, 150mm, Gloss Black, 44mm Offset Rear Shock RockShox Super Deluxe Select+ Air, 210x55mm, Bearing End, Custom Tuned with 1 Token, Rebound 55, Compression 30, 4x Lockout Wheelset DT Swiss M1900 Spline. F: 29", 15x110mm Boost, R:29", HG Freehub, 148x12mm Boost Tires Front: Schwalbe Magic Mary Evo, Super Trail, TLE, 62-622 / 29x 2.4" Ultra Soft Rear: Schwalbe Nobby Nic Evo, Super Trail, TLE, 62-622 / 29x 2.4" Soft Crankset SRAM Eagle 90, 12-Speed, DUB, 165mm, 32T T-Type, 55mm CL Shifter SRAM Eagle 90, 12-Speed MMX Rear Derailleur SRAM Eagle 90 Chain SRAM GX T-Type, 12-Speed Eagle, Flattop, PowerLock, 116 Links Casssette SRAM XS-1270 T-Type 10-52T Brakes RAM Maven Base, Organic pads Rotors Front: SRAM Centerline 2.0 180mm Rounded Rear: SRAM Centerline 2.0 180mm Rounded Handlebar Nukeproof Horizon V2 25mm Rise, Width - S/M780mm, L800mm, XL800mm, XXL800mm Stem Nukeproof Neutron AM, 45mm, black Saddle Nukeproof Horizon SL Seatpost Tranz-X YS108 Internal with SRAM Remote lever, S:150mm drop; M:170mm drop; L:200mm drop; XL/XXL:230mm drop Headset Nukeproof, 44-56 IITS Grips Nukeproof Neutron Single Lock On, Diameter - NP1 - 29.6mm, NP2 & NP3 - 31.8mm Pedals not included Weight 15.17kg/33.4lbs (Tubeless) ________Geometry: SMALL MEDIUM LARGE X-LARGE XX-LARGE A Reach 435 460 480 500 520 B Stack 620.24 629.26 638.29 647.31 656.34 C Effective Top Tube Length 578.2 605.28 621.5 643.51 665.51 D Seattube Length 380 410 440 470 500 E Effective Seattube Angle Low 77° / High 77,5° Low 77° / High 77,5° Low 77° / High 78° Low 77° / High 78° Low 77° / High 78° F Seattube Angle (Actual) Low 70.5° / High 71 Low 70.5° / High 71 Low 70.5° / High 71 Low 70.5° / High 71 Low 70.5° / High 71 G Saddle Height at Saddle Offset 650 700 750 800 850 H Saddle Offset at Saddle Height Low 146.4 High 146.6 Low 164.4 High 163.4 Low 174.2 High 172.9 Low 191.8 High 189.5 Low 209.4 High 206.2 I Headtube Length 100 110 120 130 140 J Headtube Angle Low 64.5° / High 65° Low 64.5° / High 65° Low 64.5° / High 65° Low 64.5° / High 65° Low 64.5° / High 65° K Chainstay Length 440 440 445 445 445 L Front Centre 758.8 788.07 812.38 836.68 860.99 M Wheelbase 1198.8 1228.07 1257.38 1281.68 1305.99 N Bottom Bracket Drop (Front/Rear) Low -39 / High -33 Low -39 / High -33 Low -39 / High -33 Low -39 / High -33 Low -39 / High -33 O Bottom Bracket Height Low 330 / High 336 Low 330 / High 336 Low 330 / High 336 Low 330 / High 336 Low 330 / High 336 P Stand Over Height 745 750 755 760 765 Q Fork Travel 150 150 150 150 150 R Trail 132 132 132 132 132 S Fork Offset 42 42 42 42 42 T Axle to Crown 561 561 561 561 561 U Maximum Seatpost Insert 210 240 265 295 320 ⚠ Please allow approximately 2-4 weeks for processing and shipping.
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