The Nukeproof Reactor 275 Carbon RS: One Bike to do it all
A trail bike that thrives in technical terrain — both up and down. It’s the ultimate option for the rider looking for one bike to do it all.
From concept to design, the Reactor 275 Carbon is built from the ground up to be the ultimate aggressive trail bike. It’s an uncompromising build with a full-carbon frame and nimble 27.5-inch wheels for maximum playfulness and fun. Specced with a build that leans towards aggressive descending but with kinematics and geometry efficient enough to pedal big miles, it’s a go-anywhere and do-anything machine.
It’s a bike built for all-day epics in backcountry terrain — where a 2,000-foot climb will inevitably lead to a 2,000-foot descent and you need a bike that’ll handle both equally well.
How it Rides
The Reactor was built from the Nukeproof staff’s desire for a quiver-killer mountain bike that climbs well and descends without compromise.
Designed to be poppy, playful and wicked fast, the Reactor’s four-bar Horst link suspension system is supportive while climbing but an absolute hooligan on the descent. Solid mid-stroke support balanced with relatively modest anti-squat gives the Reactor an active rear end that’s shockingly supportive and efficient when pedaling uphill. Anti-squat reduces as you shift down the cassette and pick up speed, making the bike come alive on descents. Balanced anti-rise figures allow the Reactor some squat when braking hard, maintaining rider position and providing a good amount of pressure through the tire to ensure traction.
To optimize weight, strength and stiffness, the Reactor 275 Carbon is made of a full unidirectional carbon frame (including the rear triangle). We tailor the geometry based on wheel size, so this 275 version of the bike is optimized to take full advantage of the poppy and playful nature of the smaller wheel size.
All Reactor frames also feature a “flip chip,” which allows you to adjust the geometry from “Trail” to “Rail” mode. Trail balances optimized geometry for climbing and descending while the Rail mode emphasizes the downhill — dropping the bottom bracket 6mm and slackening the head tube angle by half a degree.
Whatever you’re in to, the Reactor will do it.
The Nukeproof Reactor 275 Carbon RS Component Details
- RockShox Lyric Ultimate fork & Super Deluxe Ultimate RCT shock
- SRAM X01 AXS Eagle 12-speed electronic drivetrain
- SRAM Code RSC 4-piston brakes
- DT Swiss XM1700 27.5-inch tubeless wheels
- Maxxis Assegai front tire & Dissector rear tire
Key Features
- Aggressive trail bike
- Nukeproof UD woven carbon fiber frame
- 140mm rear travel
- Two position Trail/Rail flip chip, swinglink-driven four-bar Horst link suspension with custom tuned shock.
- 148mm boost rear spacing
- Sizes Available: Small, Medium, Large, Extra Large
Specifications
 ELITEView$5499.99
|  FACTORYView$6499.99
|  RSView$7599.99
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| FRAME | Nukeproof Reactor 275 Carbon, 140mm Travel, UD woven Carbon Fibre frame, internal cable routing, ISCG 05 mounts, Enduro bearings, Threaded 73mm BB, Boost 148mm rear axle spacing, 3D contoured rubber frame protection | Nukeproof Reactor 275 Carbon, 140mm Travel, UD woven Carbon Fibre frame, internal cable routing, ISCG 05 mounts, Enduro bearings, Threaded 73mm BB, Boost 148mm rear axle spacing, 3D contoured rubber frame protection | Nukeproof Reactor 275 Carbon, 140mm Travel, UD woven Carbon Fibre frame, internal cable routing, ISCG 05 mounts, Enduro bearings, Threaded 73mm BB, Boost 148mm rear axle spacing, 3D contoured rubber frame protection | FORK | Fox 36 Float, Performance Elite Series, Grip 2 Damper, 160mm, 44mm Offset, BOOST, Black | Fox 36 Float, Factory Series, Kashima, Grip 2 Damper, 160mm, 44mm Offset, BOOST, Orange | RockShox Lyrik Ultimate Charger 2 RC2 160mm, 46mm Offset, BOOST, Debonair, Gloss Red | SHOCK | Fox Float X, Performance Elite Series, 2 Position, LV EVOL, Custom CM+, RM, M, M+ tune, 210x55mm, Bearing End, 1x 0.3 spacer fitted. | Fox Float X, Factory Series, Kashima, 2 Position, EVOL LV, Custom CM+, RM, M, M+ tune, 210x55mm, Bearing End, 1x 0.3 spacer fitted | RockShox Super Deluxe Ultimate RCT, Custom Compression LIN / Rebound L 320 tune, 210x55mm, Bearing End, 1x bottomless token fitted. | FRONT WHEEL | Nukeproof Horizon V2 27.5", 6 Bolt, 110x15mm | DT Swiss XM1700 SPLINE 30,27.5", 6 Bolt, 110x15mm | DT Swiss XM1700 Spline 30 27.5", 6 Bolt, 110x15mm | REAR WHEEL | Nukeproof Horizon V2 27.5", 6 Bolt, Shimano Microspline Driver, 148x12mm | DT Swiss XM1700 SPLINE 30, 27.5", 6 Bolt, Shimano Microspline Driver, 148x12mm | DT Swiss XM1700 Spline 30, 27.5", 6 Bolt, XD Driver, 148x12mm | TIRES | Front: Maxxis Assegai 27.5”x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Dissector 27.5”x2.4 WT 3C MaxxTerra/EXO+/TR | Front: Maxxis Assegai 27.5”x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Dissector 27.5”x2.4 WT 3C MaxxTerra/EXO+/TR | 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 | Shimano SLX M7100 12-Speed, Hollowtech 2, 170mm, 32T, 52mm Chainline | Shimano XT M8100 12-Speed, Hollowtech 2, 170mm, 32T, 52mm Chainline | SRAM X1 Carbon Eagle 12-Speed, 170mm, 32T, B148, DUB | SHIFTER | Shimano SLX M7100-IR, 12-speed Rapidfire Plus, I-Spec EV | Shimano XT M8100-R, 12-speed Rapidfire Plus, I-Spec EV | SRAM ASX, Red | REAR DERAILLEUR | Shimano SLX M7100, SGS 12-Speed, Shadow Plus | Shimano XT M8100, SGS 12-Speed, Shadow Plus | SRAM X01 ASX Eagle 12-Speed, Red | CHAIN | Shimano SLX M7100 HG 12-speed Inc Quicklink | Shimano XT M8100 HG 12-speed Inc Quicklink | SRAM GX Eagle 12-Speed | CASSETTE | Shimano SLX M7100-12, 12-Speed (HYPERGLIDE+), 10-51T | Shimano XT M8100-12, 12-Speed (HYPERGLIDE+), 10-51T | SRAM XO1 Eagle 12-Speed, CS XG1295 EAGLE 10-52T | CHAIN GUIDE | N/A | N/A | N/A | BRAKES | Shimano SLX M7120, 4 Pot Brake, Metallic Pads | Shimano XT M8120, 4 Pot Brake, Metallic Pads | SRAM Code RSC Sintered Pads | FRONT ROTOR | 203mm | 203mm | SRAM Centreline, 200mm | REAR ROTOR | 180mm | 180mm | SRAM Centreline, 180mm | HANDLEBARS | Nukeproof Horizon V2 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm | Nukeproof Horizon V2 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm | Nukeproof Horizon Carbon V2 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm | STEM | Nukeproof Horizon, 45mm, Black | Nukeproof Horizon, 45mm, Black | Nukeproof Horizon, 45mm, Black | SADDLE | Nukeproof | Nukeproof Horizon SL, Black | Nukeproof | SEATPOST | Brand-X Ascend internal with Brand-X Remote lever, S:125mm drop; M:150mm drop; L:170mm drop; XL:200mm drop | Bikeyoke Divine Stealth with Brand-X Remote lever, S:125mm drop; M:160mm drop; L/XL:185mm drop | Bikeyoke Revive Stealth with Triggy Long Lever; S:125mm; M:160mm; L:185mm; XL:213mm drop | HEADSET | Nukeproof, 44-56 IITS | Nukeproof, 44-56 IITS | Nukeproof, 44-56 IITS | GRIPS | Nukeproof Sam Hill Signature | Nukeproof Sam Hill Signature | Nukeproof Sam Hill Signature | BEARINGS | Enduro Bearings | Enduro Bearings | Enduro Bearings | WEIGHT: (SIZE MEDIUM) | 14kgs (Tubeless) | 14kgs (Tubeless) | 13.67Kgs (Tubeless) |
Geometry
California Proposition 65 Warning
This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.