Nukeproof Reactor 275 Comp Alloy Bike (Deore - 2022)

The Nukeproof Reactor 275 Comp Alloy Bike (Deore) is equipped to thrive on all surfaces and on any trail. Its alloy/carbon frame is backed up with impact-swallowing RockShox/Marzocchi suspension and Shimano Deore 12-Speed gears.

From concept through to design, the Kinematics, the geometry and specification; the Reactor is designed from the ground up to be the ultimate aggressive trail bike. It is at home on technical climbs, but happiest when thrashing the most technical trails you can point it at.

Frame Construction:

The Alloy Reactor features a custom triple butted hydro-formed tube set and carbon seat stays, which help reduce the overall weight of the frameset. Critically this reduces the unsprung weight; making the suspension as active as possible.

The Reactor is available for 27.5” or 29” wheel sizes. These are two totally different, compromise free frames that were designed and developed at the same time.  Each frame is simply tailored around each wheel size.

Speed or play: which do you value more? The manoeuvrability of 27.5” or the raw speed of a 29”?

Adjustable Geometry:

All Reactor frames feature a “flip chip” to adjust the geometry from “Trail” to “Rail mode”.

Trail – As the name suggests, this setting is best suited for trail riding. It is for riders who get as much enjoyment from the climb as the descents.

Rail - The Rail setting turns the Reactor into a corner shredder, dropping the bottom bracket 6mm and slackening the head angle by half a degree. It is there to maximise the descending capabilities.

Suspension Design:

To ensure the bike could climb as well as it descends, Nukeproof designed the 4-bar horst linkage to have higher levels of anti-squat for climbing gears but lower levels when you drop down the cassette. This means that the bike can behave itself on the climbs but when you get it up to speed, it turns into a trail hooligan. The combination of low anti-squat and progressive rate give ultimate small bump compliance (removes rough trail and root chatter) with good mid stroke support for cornering/pumping and end stroke progression for aggressive riding. Balanced anti-rise figures allow the Reactor some squat when braking hard, maintaining rider position and providing a good amount of pressure through the tyre to ensure traction. The Reactor is designed to reward the rider and ensure you get that stoke factor in on any ride.

Full Specification List:

• Frame: Nukeproof Reactor 275 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 mount, Enduro bearings, threaded 73mm BB, Boost 148mm rear axle spacing, 3D contoured rubber frame protection
• Fork: Marzocchi Bomber Z2, 150mm, 44mm Offset, BOOST, RAIL Damper, Gloss Black
• Shock: RockShox Super Deluxe Select R, Custom Tune, 210x55mm, Bearing End, 1x bottomless token fitted.
• Front Wheel: Sun-Ringle Duroc 35 Comp 27.5", 15x110mm
• Rear Wheel: Sun-Ringle Duroc 35 Comp 27.5", Shimano Microspline Driver, 148x12mm
• Tyres: Front: Maxxis Assegai 27.5”x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Dissector 27.5”x2.4 WT 3C MaxxTerra/EXO+/TR
• Crankset: Race Face Ride, 12 Speed Crank, 170mm, 32T, 52mm Chainline
• Shifter: Shimano Deore M6100-IR, 12-speed Rapidfire Plus, I-Spec EV
• Rear Derailleur: Shimano Deore M6100, SGS 12-Speed, Shadow Plus
• Chain: Shimano Deore M6100 12-Speed
• Cassette: Shimano Deore M6100 12-Speed (HYPERGLIDE+), 10-51T
• Brakes: Shimano Deore M6120 or SRAM DB8 hydraulic disc
• Front Rotor: Shimano 203mm or SRAM, 200mm
• Rear Rotor: Shimano 180mm or SRAM, 180mm
• Handlebars: Nukeproof Neutron V2 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm
• Stem: Nukeproof Neutron AM, 45mm, black
• Saddle: Nukeproof, Black
• Seatpost: Brand-X Ascend internal, 31.6mm, S:125mm drop; M:150mm drop; L:170mm drop; XL:200mm drop
• Headset: Nukeproof, 44-56 IITS
• Grips: Nukeproof Sam Hill Signature
• Weight: 14.84kg (Medium, Tubeless)

Please Note: Due to severe delays in the bicycle supply chain, Nukeproof has been forced to make some alterations to the specification of the component parts supplied with this bicycle. As a result, the specification may differ from those shown in the images. Please refer to the specification table above for accurate information.

Key Specifications:

Material: Hydroformed 6061 Triple-Butted Aluminium
Fork Travel: 150mm
Axle to Crown: 542mm
Fork Offset: 46mm
Rear Travel: 140mm
Wheels Size: 27.5"
Max Tyre Size: 2.6"
Recommended Shock Sag (Measured seated): 30%
Shock Size: 210x55mm
Shock Hardware F: 25x8mm
Shock Hardware R: 30x8mm
Sizing: S/M/L/XL
Headtube: 44-56mm Tapered Semi-Integrated
Headset: ZS44-28.6 - T2 / ZS56/40 - B8
Bearings Required: 2x (6902 2RS), 4x (6800 2RS), 4x (6901 2RS)
Seatpost: 31.6mm (Internal Routing for Dropper Seatpost)
Seat Clamp: 34.9mm
BB: Threaded 73mm BSA
Rear Hub: Boost 148x12mm
Rear Axle: Sram Maxle Stealth M12x1.75 180mm (Thread Length 20mm)
Chain Guide: ISCG05
Brake Mount: 180mm Direct Post
Protection: 3D Contoured Rubber Frame Protection for DT/SS/CS

Built, Tuned and Ready to Ride

Rest assured that each bike is fully built and tuned by Wiggle's team of qualified bike mechanics to ensure your bike arrives in perfect condition. We supply all bikes with a set of plastic pedals, a pedal wrench and a multi-tool kit. Find out which size fits you by clicking the size chart tab.

About the Nukeproof brand

Nukeproof- It’s an attitude. Originating from Grand Rapids, Michigan in 1990, Nukeproof is now based in Belfast, Northern Ireland. Nukeproof’s aim has always been to design innovative and desirable performance-enhancing products for today's mountain bike gravity rider. Nukeproof products are designed for and tested by the worlds fastest riders to ensure that they are ready for the trails and you. Nukeproof has won numerous media and industry awards and has a successful history in mountain bike racing. In 2017 Sam Hill took his Nukeproof Mega 275c equipped with Nukeproof components to the overall Enduro World Series title to add to victories and podiums in the UCI Downhill World Cup. Whatever you're looking for, should it be technical ride wear, upgrade components or a gravity focused bike, Nukeproof has you covered.