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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.
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 of play: which do you value more? The manoeuvrability of 27.5” or the raw speed of a 29”?
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 descending capabilities.
To ensure the bike could climb as well as it descends, we 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.
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
ISCG05 mount
Enduro Bearings
Threaded 73mm BB
Boost 148mm rear axle spacing
3D contoured Rubber frame protection
2 position adjustable Flip chip system
Shock: RockShox Super Deluxe Ultimate RCT, Custom ML 320 tune, 210x55mm, Bearing End, 1x bottomless token fitted.
Headset: Nukeproof, 44-56 IITS
Weight: 3.79Kgs/8.3lbs (Medium)
Material: Hydroformed 6061 Triple-Butted Aluminium
Fork Travel: 150mm (RS 160mm)
Axle to Crown: 545mm (RS 555mm)
Fork Offset: 46mm
Rear Travel: 140mm
Wheels Size: 27.5"
Max Tyre Size: 2.6"
Recommended Shock Sag (Measured seated): 30% (16.5mm)
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
Sizing Information
The size chart below will get you on the right size bike. Experienced riders may also wish to refer to the geometry chart for more detail.
Getting the Right Fit
At Wiggle we measure each of our bikes to build accurate size charts for our customers. Our qualified team of mechanics then individually check each order, against measurements supplied by you, to ensure the size chosen is correct. Another reason you can have complete confidence when buying a bike from Wiggle!
If you are on the change over between sizes both options will fit. Racers and experienced riders would usually select a smaller size as this offers quicker handing. A larger bike offers more stability and is more suited to new and intermediate riders.
| Small | Medium | Large | Extra Large | ||
|---|---|---|---|---|---|
| Height | cm | 155 - 170cm | 170 - 180cm | 180 - 190cm | 190 - 200cm |
| ft | 5′ 1″ - 5′ 7″ | 5′ 7″ - 5′ 106⁄7″ | 5′ 106⁄7″ - 6′ 24⁄5″ | 6′ 24⁄5″ - 6′ 63⁄4″ | |
| Inside Leg | cm | 71 - 76cm | 76 - 81cm | 81 - 86cm | 86 - 92cm |
| inches | 28″ - 297⁄8″ | 297⁄8″ - 317⁄8″ | 317⁄8″ - 336⁄7″ | 336⁄7″ - 361⁄5″ | |
| Small | Medium | Large | Extra Large | ||
|---|---|---|---|---|---|
| Seat Tube Length | mm | 381mm | 420mm | 458mm | 508mm |
| Top Tube (Virtual) | mm | 580mm | 610mm | 640mm | 675mm |
| Head Tube | mm | 110mm | 115mm | 120mm | 125mm |
| Head Tube Angle | Degrees | 66° | 66° | 66° | 66° |
| Wheelbase | mm | 1150mm | 1181mm | 1212mm | 1247mm |
| Chainstay Length | mm | 430mm | 430mm | 430mm | 430mm |
| Seat Tube Angle | Degrees | 75.5° | 75.5° | 75.5° | 75.5° |
| Bottom Bracket Drop | mm | 18mm | 18mm | 18mm | 18mm |
| Bottom Bracket Height | mm | 336mm | 336mm | 336mm | 336mm |
| Reach | mm | 425mm | 454mm | 482mm | 516mm |
| Stack | mm | 600mm | 605mm | 609mm | 614mm |
| Fork Travel | mm | 150mm | 150mm | 150mm | 150mm |
| Fork Rake | mm | 46mm | 46mm | 46mm | 46mm |
| Fork Length | mm | 545mm | 545mm | 545mm | 545mm |
We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.
Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.
Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.
