Nukeproof
Nukeproof Reactor Alloy Pro 2026
Nukeproof Reactor Alloy Pro 2026
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SKU:SBIREANKP001
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2026 Nukeproof Reactor - Aluminium Trail Brute
The Reactor Alloy Pro is Nukeproof’s aggressive trail bike — fast on descents, efficient on the climbs, and built to thrive on long days where terrain constantly changes. With 140 mm of rear travel, a 150 mm fork, and geometry designed to balance agility and stability, the Reactor is the “go-anywhere” platform for riders who want one bike that can do it all.
Constructed from hydroformed 6061-T6 aluminium with UD carbon seatstays, the Reactor delivers a blend of strength, stiffness and low unsprung mass. The result is precise handling, excellent tracking and suspension performance that stays active whether you’re climbing technical singletrack or pushing hard into rough, fast trails.
Aggressive Trail Geometry
The Reactor’s long-reach, slack-front-end layout provides confidence at speed, while a steep seat tube angle keeps climbing efficient and centred. It’s a bike that feels lively and manoeuvrable on tight terrain, but planted when you’re pushing into rougher lines.
Balanced, Supportive Suspension
Using Nukeproof’s updated Horst-link system, the Reactor delivers a supple initial stroke for traction, with strong mid-stroke support for pumping, turning and carrying speed. The progressive end-stroke provides control on bigger impacts, keeping the bike composed and predictable on challenging terrain.
Hybrid Alloy / Carbon Frame Construction
The 6061-T6 aluminium front triangle and chainstays provide strength and durability, while UD carbon seatstays reduce unsprung mass to improve suspension response. The combination keeps the frame stiff where needed but compliant enough for grip and comfort on longer rides.
Trail-Ready Features
Practicality matters on long days out. The Reactor Alloy Pro includes tube-in-tube routing, durable MAX bearings, ISCG-05 mounts, generous tyre clearance and a threaded 73 mm bottom bracket for easy servicing. A short seat tube across all sizes supports long-drop posts for modern riding styles.
Who It’s For
The Reactor Alloy Pro suits riders who want a single trail bike that climbs efficiently, feels energetic on rolling terrain, and remains confident when the trail points steep and rough. From trail centres to backcountry missions, it’s built to keep pace wherever your ride takes you.
Highlights
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Frame material
Aluminium
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Wheelsize
S-M - Mullet | L-XXL - 29
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Front travel
150mm
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Rear travel
140mm
Specifications
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2026 Nukeproof Reactor Alloy Pro
Frame
Nukeproof Reactor V2 290 Alloy, 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
Shock
RockShox Super Deluxe Select+ Air, 210x55mm, Bearing End, Custom Tuned with 1 Token, Rebound 55, Compression 30, 4x Lockout
Handlebar
Nukeproof Neutron V2 25mm Rise, Width - S780mm, M780mm, L800mm
Stem
Nukeproof Neutron AM, 45mm, black
Headset
Nukeproof
Brakes
SRAM Maven Base, Organic pads
Front rotor
SRAM
Rear rotor
SRAM
Shifter
Sram Eagle 90
Rear derailleur
Sram Eagle 90
Crankset
SRAM Eagle 90, 12-Speed, DUB, 165mm, 30T T-Type, 55mm CL
Bottom bracket
SRAM DUB
Cassette
SRAM CS1270 T-Type, 12-Speed, 10-52T
Chain
Sram Eagle 90
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
Front hub
DT Swiss M1900 Spline 110x15mm Boost
Rear hub
DT Swiss M1900 Spline 148x12mm Boost XD
Spokes
Nukeproof
Rims
DT Swiss M1900 Spline
Rear rim
DT Swiss M1900 Spline
Front tyre
Schwalbe Magic Mary Evo, Super Trail 29x 2.4" Ultra Soft
Rear tyre
Schwalbe Nobby Nic Evo, Super Trail 29x 2.4" Soft
Optimised Geometry & Suspension Kinematics
The Reactor uses Nukeproof’s refined Horst-link system to balance traction, support and control. A supple initial stroke improves grip, strong mid-stroke support keeps momentum on technical terrain, and a progressive end-stroke adds confidence on big hits. Geometry combines a long front centre with a steep seat angle for efficient climbing and composed descending.
Adaptability & Frame Construction
A hydroformed 6061-T6 aluminium front triangle pairs with UD carbon seatstays to reduce unsprung mass and improve suspension response. The two-position “Trail / Rail” flip-chip allows riders to adjust geometry for all-round trail riding or more aggressive descending. The Reactor V2 also supports wheel-size adjustment for consistent handling across setups.
Seamless Trail Shredding
Designed for real-world riding, the Reactor features tube-in-tube routing, MAX bearings, ISCG-05 mounts, and clearance for tyres up to 2.6”. A 750 ml bottle fits inside the front triangle, with an accessory mount under the top tube for tools or spares. Full 3D rubber protection keeps the frame quiet and well-shielded on rough trails.