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.