NUKEPROOF Reactor Alloy 290 2026
NUKEPROOF Reactor Alloy 290 2026
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Collect in Store
Ride away with our Bike Click & Collect service. All bikes are built by a Cytec trained Mechanic and personally set up for you in store.
From concept to kinematics, geometry to spec, the Nukeproof Reactor was built from the ground up to be the ultimate aggressive trail bike. It climbs with precision but truly comes alive when you’re charging technical trails.
Constructed from a hydroformed and butted 6061 T6 aluminium alloy, with carbon fibre seat stays to reduce unsprung mass and optimise lateral stiffness. The Reactor delivers the perfect blend of low weight, strength, and stiffness.
Made for long days in the saddle, it’s your go-anywhere trail weapon—ready for epic adventures where a 1,000m climb leads to a 1,000m descent. Whatever the trail throws at you, the Reactor 290 Alloy is built to take it on.
Specifiactions:
| Item number | SBIREANKP004 |
| Brand | Nukeproof |
| Model | Reactor Alloy 290 |
| Design code | REA01As |
| Size | XL |
| Range | Trail/All-Mountain |
| Fork | RockShox Lyrik Select +, Charger 3.1 RC2, 29" Boost 15x110mm Maxle Stealth, Debonair, 150mm, Gloss Black, 44mm Offset |
| Material | Aluminium |
| Groupset | Sram Eagle 90 |
| Crank | SRAM GX Eagle, 12-Speed, DUB, 165mm, 32T T-Type, 55mm CL |
| Cassette | Sram XS-1270 T-Type 10-52 |
| Electric bike | No |
| Brake Type | Post Mount |
| Front Brake | SRAM Maven Base, Organic pads |
| Rear Brake | SRAM Maven Base, Organic pads |
| Rear Derailleur | Sram Eagle 90 |
| Handlebar | Nukeproof Horizon V2 25mm Rise, Width - S/M780mm, L800mm, XL800mm, XXL800mm |
| Stem | Nukeproof Neutron AM, 45mm, black |
| Seatpost | Tranz-X YS108 Internal with SRAM Remote lever, S:150mm drop; M:170mm drop; L:200mm drop; XL/XXL:230mm drop |
| Saddle | Nukeproof Horizon SL |
| Wheelset | DT Swiss M1900 Spline. F: 29", 15x110mm Boost, R:29", HG Freehub, 148x12mm Boost |
| Tyres | F: Schwalbe Magic Mary Evo, Super Trail, TLE, 62-622 / 29x 2.4" Ultra Soft, R: Schwalbe Nobby Nic Evo, Super Trail, TLE, 62-622 / 29x 2.4" Soft |

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