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2027 Nukeproof Reactor Alloy Pro full‑suspension trail bike with premium suspension, wide‑range gearing, hydraulic disc brakes, and a lightweight alloy frame. Finished in Nukeproof Yellow.
2027 Nukeproof Reactor Alloy Pro full‑suspension trail bike with premium suspension, wide‑range gearing, hydraulic disc brakes, and a lightweight alloy frame. Finished in Nukeproof Yellow.
Nukeproof

2027 Nukeproof Reactor Alloy Pro / Nukeproof Yellow

£3,999.00
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2027 Nukeproof Reactor Alloy Pro / Nukeproof Yellow

Season:2027

Brand:Nukeproof

Code:REA01AsSramEagle90

A Fast, Agile, and Capable Trail Bike for Serious Riders

The 2027 Nukeproof Reactor Alloy Pro in Nukeproof Yellow is built for riders who want a lively, responsive, and highly capable full‑suspension trail bike. Sitting above the Reactor Alloy Comp, the Pro model introduces upgraded suspension, refined components, and a more aggressive ride feel that encourages speed and precision on technical terrain. It’s designed for riders who push hard on climbs, attack descents, and want a bike that feels sharp, controlled, and ready for demanding trail riding.

Lightweight Alloy Frame with Progressive Reactor Geometry

The Reactor Alloy Pro uses a lightweight aluminium frame engineered around Nukeproof’s progressive Reactor geometry, giving riders a centred, confident position that balances climbing efficiency with descending stability. The frame’s proportions make the bike feel agile in tight corners while remaining composed at speed, offering the perfect blend of responsiveness and control. Its durable construction ensures it can handle aggressive riding, while the Nukeproof Yellow finish gives the bike a bold, unmistakable identity on the trail.

Premium Suspension for Precision and Control

A major upgrade on the Pro model is its enhanced suspension package, offering improved damping, better support, and more control on rough terrain compared to the Alloy Comp. The combination of a responsive RockShox Super Deluxe Select+ Air rear shock and a high‑performance RockShox Lyrik Select + fork helps riders maintain traction on roots, rocks, and uneven surfaces, giving the bike a smooth, planted feel even when riding at speed. This suspension setup is designed for riders who want a bike that reacts instantly to input and stays composed on demanding trails.

Wide‑Range Drivetrain for Technical Trail Versatility

The Reactor Alloy Pro features a wide‑range SRAM Eagle 90 drivetrain that helps riders tackle steep climbs, fast flats, and technical descents with confidence. The gearing is chosen to be intuitive and reliable, allowing riders to maintain a comfortable cadence across varied terrain. Whether powering up climbs or accelerating out of corners, the drivetrain supports a fast, efficient riding style.

Hydraulic Disc Brakes for Confident, Controlled Stopping Power

Reliable SRAM Maven Base hydraulic disc brakes give the Reactor Alloy Pro strong, consistent stopping power in all conditions, from dry hardpack to wet and muddy trails. Their predictable feel helps riders stay in control on steep descents and navigate technical sections with precision, making them an essential part of the bike’s high‑performance trail capability.

Fast‑Rolling Wheels and Trail‑Focused Tyres

The DT Swiss M1900 wheels and Schwalbe tyres are chosen to give the Reactor Alloy Pro a fast, stable feel on mixed terrain. The tyres offer reassuring grip without adding unnecessary weight, helping riders maintain momentum and control as they push harder on technical trails. Whether on flowing singletrack, rocky climbs, or fast descents, the bike feels lively, predictable, and ready for aggressive riding.

Nukeproof Yellow: Bold, Modern, and Unmistakably Reactor

Finished in Nukeproof Yellow, the Reactor Alloy Pro has a striking, high‑energy aesthetic that reflects its premium status. It’s clean, sharp, and unmistakably Nukeproof — a bike that looks fast even when standing still.


Key Specifications

  • Frame: Lightweight aluminium full‑suspension frame with progressive Reactor trail geometry
  • Fork: Premium suspension fork offering enhanced damping and control
  • Wheels: 29" wheels for fast, stable rolling performance
  • Tyres: Trail‑focused tyres providing grip and agility on technical terrain
  • Drivetrain: Wide‑range multi‑gear system for versatile trail riding
  • Brakes: Hydraulic disc brakes delivering strong, predictable stopping power
  • Cockpit: Performance‑focused bar and stem combination for precise steering
  • Seatpost: Adjustable seatpost for comfortable positioning
Technical Information
  • Frame
  • Sizes
    Medium, Large, X-Large, XX-Large
  • Colours
    Nukeproof Yellow
  • 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
  • Forks and Shocks
  • 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
  • eSystem
  • Motor
    N/A
  • Display
    N/A
  • Battery Type
    N/A
  • Battery Integration
    N/A
  • Charger
  • Drivetrain and Brakes
  • Brake System
    SRAM Maven Base
  • Rear Derailleur
    SRAM Eagle 90
  • Front Derailleur
    N/A
  • Shifters
    SRAM Eagle 90, 12-Speed MMX
  • Bottom Bracket
  • Crankset
  • Cassette
    SRAM XS-1270 T-Type 10-52
  • Chain
    SRAM GX T-Type, 12-Speed Eagle, Flattop, PowerLock, 116 Links
  • Cockpit
  • Handlebar
    Nukeproof Horizon V2 25mm Rise, Width - S/M780mm, L800mm, XL800mm, XXL800mm
  • Stem
    Nukeproof Neutron AM, 45mm, black
  • Grips
    Nukeproof Neutron Single Lock On, Diameter - S/M: 29.6mm, L/XL/XXL: 31.8mm
  • Headset
    Nukeproof, 44-56 IITS
  • Wheels
  • Wheelset
    DT Swiss M1900 Spline. F: 29", 15x110mm Boost, R:29", HG Freehub, 148x12mm Boost
  • Front Tyre
    Schwalbe Magic Mary Evo, Super Trail, TLE, 62-622 / 29x 2.4" Ultra Soft
  • Rear Tyre
    Schwalbe Nobby Nic Evo, Super Trail, TLE, 62-622 / 29x 2.4" Soft
  • Max Tyre Clearance
    N/A
  • Finishing Kit
  • Seatpost / Saddle
    Tranz-X YS108 Internal with SRAM Remote lever, S:150mm drop; M:170mm drop; L:200mm drop; XL/XXL:230mm drop / Nukeproof Horizon SL
  • Pedals
    Not supplied: Shop pedals here
  • Extras
  • Kickstand
    N/A
  • Lighting
    N/A
  • Lock
    N/A
  • Carrier
    N/A
  • Mudguards
    N/A
  • Extras
    N/A
  • Please Note:
    Every effort has been made to ensure accuracy throughout this website. However, manufacturers reserves the right to change bike specifications, features, prices and colours without prior notice. If you would like to check the specification of a bike before purchasing, please call one of our stores.
Sizing Information

Frame Geometry


SMLXLXXL
AReach435460480500520
BStack620.24629.26638.29647.31656.34
CEffective Top Tube Length578.2605.28621.5643.51665.51
DSeattube Length380410440470500
EEffective Seattube AngleLow 77° / High 77,5°Low 77° / High 77,5°Low 77° / High 78°Low 77° / High 78°Low 77° / High 78°
FSeattube Angle (Actual)Low 70.5° / High 71Low 70.5° / High 71Low 70.5° / High 71Low 70.5° / High 71Low 70.5° / High 71
GSaddle Height at Saddle Offset650700750800850
HSaddle Offset at Saddle HeightLow 146.4 High 146.6Low 164.4 High 163.4Low 174.2 High 172.9Low 191.8 High 189.5Low 209.4 High 206.2
IHeadtube Length100110120130140
JHeadtube AngleLow 64.5° / High 65°Low 64.5° / High 65°Low 64.5° / High 65°Low 64.5° / High 65°Low 64.5° / High 65°
KChainstay Length440440445445445
LFront Centre758.8788.07812.38836.68860.99
MWheelbase1198.81228.071257.381281.681305.99
NBottom Bracket DropLow -39 / High -33Low -39 / High -33Low -39 / High -33Low -39 / High -33Low -39 / High -33
OBottom Bracket HeightLow 330 / High 336Low 330 / High 336Low 330 / High 336Low 330 / High 336Low 330 / High 336
PStand Over Height745750755760765
QFork Travel150150150150150
RTrail132132132132132
SFork Offset4242424242
TAxle to Crown561561561561561
UMaximum Seatpost Insert210240265295320
Professional Opinion

The 2027 Nukeproof Reactor Alloy Pro is the sweet spot for riders who want a genuinely high‑performance trail bike without stepping into carbon pricing. It delivers the sharp, lively handling the Reactor platform is known for, but with the toughness and practicality of an alloy chassis — a combination that makes it ideal for aggressive trail riders who value responsiveness, durability, and control.

The upgraded suspension package is the standout improvement over the Alloy Comp. It gives the bike noticeably better support on rough terrain, helping riders stay composed on roots, rocks, and fast, choppy sections. The Pro feels more planted at speed, more confident on steep descents, and more precise when picking lines through technical singletrack. It’s a bike that rewards active riding, responding instantly to rider input while maintaining the stability needed for demanding trails.

The wide‑range drivetrain and hydraulic brakes round out a build that feels ready for serious riding. The gearing is versatile enough for long climbs and punchy technical ascents, while the braking performance inspires confidence on steep, loose, or unpredictable terrain. Combined with fast‑rolling wheels and trail‑focused tyres, the Reactor Alloy Pro feels agile, efficient, and capable across a wide variety of trail conditions.

In short, the Reactor Alloy Pro is the model that most riders will gravitate toward if they want a trail bike that feels premium, fast, and genuinely capable — without the cost of carbon. Finished in Nukeproof Yellow, it looks bold, modern, and unmistakably Reactor.

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