Nukeproof Reactor 290 Comp Alloy Bike (Deore)

Ready for the worst that your local trails can throw at you, the Reactor 290 Comp Alloy brings you excellent agility, comfort and control for thrashing down technical trails with ease. Its light, yet tough aluminium frame with its carbon seatstays is combined with trail-smoothing Marzocchi/RockShox Suspension components and quick shifting Shimano Deore 12-speed gearing.

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:

To optimise the weight, strength and stiffness, the Reactor Carbon frame features a full UD woven carbon fibre frameset (Including chain and seat stays). It 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.

Features:

Frame: Nukeproof Reactor 290 Alloy, 130mm Travel, custom triple butted hydro-formed tube set for front triangle and chain stays, UD woven carbon fibre Seat stays, internal cable routing, 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, 210x50mm, Bearing End, 1x bottomless token fitted.
Front Wheel: Sun-Ringle Duroc 35 Comp 29″, 15x110mm
Rear Wheel: Sun-Ringle Duroc 35 Comp 29″, Shimano Microspline Driver, 148x12mm
Tyres: Front: Maxxis Assegai 29”x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Dissector 29”x2.4 WT 3C MaxxTerra/EXO+/TR
Crankset: Race Face Ride, 12 Speed Crank, 170mm, 30T, 52mm Chainline
Shifter: Shimano Deore M6100-IR, 12-speed Rapidfire Plus, I-Spec E
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 – M780mm, L800mm, XL800mm
Stem: Nukeproof Neutron AM, 45mm, black
Saddle: Nukeproof, Black
Seatpost: Brand-X Ascend internal, 31.6mm, M:150mm drop; L:170mm Drop; XL:200mm drop
Headset: Nukeproof, 44-56 IITS
Grips: Nukeproof Sam Hill Signature
Weight: 15kg 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: 560mm
Fork Offset: 44mm
Rear Travel: 130mm
Wheels Size: 29″
Max Tyre Size: 2.6″
Recommended Shock Sag (Measured seated): 30%
Shock Size: 210x50mm
Shock Hardware F: 25x8mm
Shock Hardware R: 30x8mm
Sizing: 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

Technologies:

Flip Chip Adjustable Suspension Geometry: All models of the Reactor feature a “flip-chip”, so that the bike geometry can be easily adjusted from “Trail” to “Rail” mode without having to custom tune your suspension setup. The Trail setting is best suited for pumping and carving your rhythm and style into the mountainside and still caters for rides who love the climb as much as the descent. On the other hand, the Rail setting turns the Reactor into an adrenaline-fuelled gravity tamer. Dropping the bottom bracket height by 6mm and slackening the head angle by half a degree, these changes give this Reactor greater stability and control when the trail leans downhill towards vertical
Nukeproof 4-Bar Horst Linkage Suspension Design: Ensuring the bike can climb as well as it descends, Nukeproof focussed on fine-tuning their 4-Bar Horst linkage suspension setup to give higher levels of anti-squat performance when higher up the cassette in the climbing gears, but also to deliver greater trail-gobbling performance when you drop down the cassette and begin descending the mountain. This means that the bike behaves itself on the climbs and grips with unprecedented traction and efficiency when making your way back towards sea-level. When you get it up to speed and drop a few gears to carry momentum, this bike turns into a trail hooligan and helps you carve the trail with style. The combination of low anti-squat and progressive suspension-rate give it the ultimate in small bump compliance (removes rough trail and root chatter) with good mid-stroke support for cornering/pumping and end stroke progression for aggressive riding. With balanced anti-rise suspension performance, the Reactor provides some squat when braking hard, maintaining rider position and providing a good amount of pressure through the tyre to ensure stability and traction. The Reactor is designed to reward the rider and ensure you get that stoke factor in on any ride

Easy Assembly

When you order a bike, one of our trained mechanics will carefully prepare and pack your bike for shipping. Upon delivery, the assembly is simple and all necessary tools are conveniently included in the box.

Depending on the delivery service and destination, bikes will either be delivered in a large or a small box. Below is a guide as to how your bike will arrive:

All bikes for delivery within the UK and Republic of Ireland will be delivered in a large box, except for kids’ bikes and BMX bikes, which are always delivered in manufacturer’s boxes.
All bikes for delivery within the EU on a standard service will be delivered in a large box. If an express delivery option is chosen, your bike will be packed into a small box. Again, the exception is kids’ bikes and BMX bikes, which are always delivered in manufacturer’s boxes.
All bikes for worldwide delivery outside the EU will be delivered in small boxes.

This video demonstrates assembly from a SMALL BOX.

This video demonstrates assembly from a LARGE BOX.

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