Nukeproof Reactor 275 Carbon

Nukeproof Reactor 275 Carbon

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.

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”?

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.

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.

 

Features

  • Aggressive Trail Bike
  • Nukeproof UD woven Carbon Fibre frame
  • 140mm Rear Travel
  • 2 Position Trail/Rail Flip Chip, Swinglink Driven 4 Bar Horst Link Suspension, with custom tuned shock.
  • 148mm Boost rear spacing
  • Sizes Available: Small, Medium, Large, Extra Large

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Nukeproof Reactor 275 Carbon
Nukeproof Reactor 275 Carbon
Nukeproof Reactor 275 Carbon
Nukeproof Reactor 275 Carbon
Nukeproof Reactor 275 Carbon
Nukeproof Reactor 275 Carbon

Full Specs

Elite  Factory  RS  Frame Only 
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 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, 150mm, 44mm Offset, BOOST, Black (SHORT ID: D6GC)  Fox 36 Float, Factory Series, Kashima, Grip 2 Damper, 150mm, 44mm Offset, BOOST, Black (SHORT ID: D6GG) RockShox Lyrik Ultimate Charger 2 RC2 160mm, 46mm Offset, BOOST, Debonair, Gloss Red  
Shock Fox Float DPX2, Performance Elite Series, 3 Position, LV EVOL, Custom CL, DRL, Rezi A F F tune, 210x55mm, Bearing End, 1x 0.3 spacer fitted. (SHORT ID: D6TC) Fox Float DPX2, Factory Series, Kashima, 3 Position, EVOL LV, Custom CL, DRL, Rezi A F F tune, 210x55mm, Bearing End, 1x 0.3 spacer fitted. (SHORT ID: D6S9) RockShox Super Deluxe Ultimate RCT, Custom ML 320 tune, 210x55mm, Bearing End, 1x bottomless token fitted. Fox Float DPX2, Factory Series, Kashima, 3 Position, EVOL LV, Custom CL, DRL, Rezi A F F tune, 210x55mm, Bearing End, 1x 0.3 spacer fitted. (SHORT ID: D6S9)
Front Wheel DT Swiss M1900 SPLINE 27.5", 6 Bolt, 110x15mm DT Swiss XM1700 SPLINE 30,27.5", 6 Bolt, 110x15mm Mavic Deemax Pro Sam Hill, 27.5", 6 Bolt, 110x15mm  
Rear Wheel DT Swiss M1900 SPLINE 27.5", 6 Bolt, Shimano Microspline Driver, 148x12mm DT Swiss XM1700 SPLINE 30, 27.5", 6 Bolt, Shimano Microspline Driver, 148x12mm Mavic Deemax Pro Sam Hill, 27.5", 6 Bolt, XD 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 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 XO1 Eagle 12-Speed, Red  
Rear Deraileur Shimano SLX M7100, SGS 12-Speed, Shadow Plus Shimano XT M8100, SGS 12-Speed, Shadow Plus SRAM X01Eagle 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 PG1295 EAGLE 10-52T  
Brakes Shimano SLX M7120, 4 Pot Brake, Metallic Pads with Fins Shimano XT M8120, 4 Pot Brake, Metallic Pads with Fins  SRAM Code RSC Sintered Pads  
 Front Rotor Shimano SM-RT66, 203mm Shimano SM-RT76, 203mm SRAM Centreline, 200mm  
Rear Rotor Shimano SM-RT66, 180mm Shimano SM-RT76, 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, 50mm, Black Nukeproof Horizon, 50mm, Black Nukeproof Horizon, 50mm, Black  
Saddle Nukeproof Horizon SL, Black Nukeproof Horizon SL, Black Nukeproof Horizon SL, Black  
Seatpost Brand X Ascend internal w Shimano SL-MT500-IL Remote lever, M:150mm drop; L/XL:170mm drop  Bikeyoke Divine Stealth w Shimano SL-MT500-IL Remote lever, M/L:160mm drop; XL:185mm drop RockShox Reverb Stealth with 1x Remote, 31.6mm; M: 409mm length, 150mm drop; L: 462mm length, 175mm drop; XL: 514.5mm length, 200mm drop  
Headset Nukeproof, 44-56 IITS 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 Enduro Bearings
Weight: (Size Medium)  14.5Kgs/31.9lbs (Tubeless) 14.1Kgs/31.2lbs (Tubeless) 13.9Kgs/30.6lbs (Tubeless) 3.6Kgs/7.9lbs (Medium)

Geometry & Sizing

 

Reactor 275 (Carbon) Reactor 275 RS (Carbon)
Small Medium Large X-Large Small Medium Large X-Large
(A) Reach 425 454 482.5 516 420.2 449.5 478 511.5
(B) Stack 600 605 609 613.5 603 608.5 612.5 617.3
(C) Effective Top Tube Length 580 610 640 675 581 611.2 641.5 676.3
(D) Seattube Length 381 420 458 508 381 420 458 508
(E) Effective Seattube Angle 75.5°
(Low 75°)
75.5°
(Low 75°)
75.5°
(Low 75°)
75.5°
(Low 75°)
75.1°
(Low 74.6°)
75.1°
(Low 74.6°)
75.1°
(Low 74.6°)
75.1°
(Low 74.6°)
(F) Seattube Angle (Actual) 71°
(Low 70.5°)
71°
(Low 70.5°)
71°
(Low 70.5°)
71°
(Low 70.5°)
70.6°
(Low 70.1°)
70.6°
(Low 70.1°)
70.6°
(Low 70.1°)
70.6°
(Low 70.1°)
(G) Saddle Height at Saddle Offset 650 700 750 850 650 700 750 850
(H) Saddle Offset at Saddle Height 164.71 181.03 196.99 229.25 169.79 186.45 203.09 236.37
(I) Headtube Length 110 115 120 125 110 115 120 125
(J) Headtube Angle 66°
(Low 65.5)
66°
(Low 65.5)
66°
(Low 65.5)
66°
(Low 65.5)
65.5°
(Low 65)
65.5°
(Low 65)
65.5°
(Low 65)
65.5°
(Low 65)
(K) Chainstay Length 430 430 430 430 430 430 430 430
(L) Front Centre 728 759 790 825 732 763 794 829
(M) Wheelbase 1150 1181 1212 1247 1154 1185 1216 1251
(N) Bottom Bracket Drop -18
(Low -24)
-18
(Low -24)
-18
(Low -24)
-18
(Low -24)
-15
(Low -21)
-15
(Low -21)
-15
(Low -21)
-15
(Low -21)
(O) Bottom Bracket Height 336
(Low 330)
336
(Low 330)
336
(Low 330)
336
(Low 330)
339
(Low 333)
339
(Low 333)
339
(Low 333)
339
(Low 333)
(P) Stand Over Height 723/721 721/725 722/730 725/737 729/727 728/732 729/737 732/744
(Q) Fork Travel 150 150 150 150 160 160 160 160
(R) Trail 110.73 110.73 110.73 110.73 110.78 110.78 110.78 110.78
(S) Fork Offset 46 46 46 46 46 46 46 46
(T) Axle to Crown  545 545 545 545 555 555 555 555
(U) Maximum Seatpost Insert 175 215 250 300 175 215 250 300

*All dimensions in mm unless otherwise stated

Recommended Sizing

Help

  • FAQs
  • Frame Spec
  • Tech Docs
  • Where can I buy Nukeproof Bikes?
  • Nukeproof bikes, components and apparel is sold through an authorised dealer network. Check out our dealer locator for your local local stockist or preferred online store www.nukeproof.com/dealers. 
  • Do your bikes come with Warranty?
  • All Reactor frames come with a 5 year frame warranty (Please visit www.nukeproof.com/warranty for full info). On top of that we also offer an extended 2-year warranty on all components excluding wear and tear items such as bearings, brake pads, chains & cassettes etc. Our Warranty policy applies to the original owner and processed by our authorised retail partners. To see their warranty process check: www.nukeproof.com/warranty
  • Where can I demo a Nukeproof bike? 
  • We run numerous demo's through the year at major events and with our dealer network. Check out www.nukeproof.com/demo for when we may be near you. If this is unavailable to you, you can always request a demo through your local authorised stockist.  
  • What size bike do I need? 
  • All our products come with a size guide. This is designed as an indication of the size that may suit you. If you are still unsure speak with one of our dealers who will be happy to help you pick the right size and model for you. 
  • How does you bike range work? 
  • Our range is named based on specification level. Not every Bike Frame will have each specification level, but in order of price they run: Sport - Race - Comp - Pro - Elite- Factory/ST (Reactor Only) - RS   
Material: Ultra Strong T700/800 Monocoque Carbon Fibre
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%
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: 36.4mm
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