Nukeproof Reactor 290 Factory Carbon 29" Mountain Bike 2021 - Trail Full Suspension MTB
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.
Occasionally, without notice, manufacturers change product design and/or specifications.
Frame | Nukeproof Reactor 290 Carbon, 130mm Travel, UD woven Carbon Fibre frame, internal cable routing, ISCG 05 mounts, Enduro bearings, Threaded 73mm BB, Boost 148mm rear axle spacing |
Fork | Fox 36 Float, Factory Series, Kashima, Grip 2 Damper, 140mm, 44mm Offset, BOOST, Black (SHORT ID: D6GD) |
Rear Shock | Fox Float DPX2, Factory Series, Kashima, 3 Position, EVOL LV, Custom CL, DRL, Rezi A F F tune, 210x50mm, Bearing End, 1x 0.3 spacer fitted. (SHORT ID: D6S9) |
Headset | Nukeproof, 44-56 IITS |
Stem | Nukeproof Horizon, 50mm, Black |
Bars | Nukeproof Horizon V2 25mm Rise, Width - M780mm, L800mm, XL800mm) |
Front Brake | Shimano XT M8120, 4 Pot Brake, Metallic Pads with Fins, Shimano SM-RT76, 203mm |
Rear Brake | Shimano XT M8120, 4 Pot Brake, Metallic Pads with Fins, Shimano SM-RT76, 180mm |
Rear Mech | Shimano XT M8100, SGS 12-Speed, Shadow Plus |
Shifters | Shimano XT M8100-R, 12-speed Rapidfire Plus, I-Spec EV |
Rims | DT Swiss XM1700 SPLINE 30,29 |
Front Hub | 6 Bolt, 110x15mm |
Rear Hub | 6 Bolt, Shimano Microspline Driver, 148x12mm |
Front Tyre | Maxxis Assegai 29”x2.5 WT 3C MaxxTerra/EXO+/TR |
Rear Tyre | Maxxis Dissector 29”x2.4 WT 3C MaxxTerra/EXO+/TR |
Seat Post | Bikeyoke Divine Stealth w Shimano SL-MT500-IL Remote lever, M/L:160mm drop; XL:185mm drop |
Saddle | Nukeproof Horizon SL, Black |
Chainset | Shimano XT M8100 12-Speed, Hollowtech 2, 170mm, 30T, 52mm Chainline |
Chain | Shimano XT M8100 HG 12-speed Inc Quicklink |
Cassette | Shimano XT M8100-12, 12-Speed (HYPERGLIDE+), 10-51T |
Pedals | Resin Platform |
Weight | 14.2Kgs |
Nukeproof Reactor 290 2021 Size Chart
Size |
Height (cm) |
Height (Inches) |
M |
170 - 181 |
5’7” – 5’11” |
L |
180 - 191 |
5’11” – 6’3” |
XL |
190 - 201 |
6’3” – 6’7” |
Nukeproof Reactor 290 Alloy 2021 Geometry
Size |
REACTOR 290 |
REACTOR 290C RS |
REACTOR 290C ST |
||||||
M |
L |
XL |
M |
L |
XL |
M |
L |
XL |
|
Reach mm |
451 |
480 |
514 |
446.3 |
475.4 |
509.5 |
460 |
488 |
521.6 |
Stack mm |
615 |
620 |
625 |
618.4 |
623.5 |
628.7 |
608 |
614 |
618 |
Effective Top Tube Length mm |
610 |
640 |
675 |
611.4 |
641.2 |
676.3 |
608 |
638 |
673 |
Seat tube Length mm |
420 |
458 |
508 |
420 |
458 |
508 |
420 |
458 |
508 |
Effective Seat tube Angle |
75.5° |
75.5° |
75.5° |
75.1° |
75.1° |
75.1° |
76.3° |
76.3° |
76.3° |
Seat tube Angle (Actual) |
71° |
71° |
71° |
70.6° |
70.6° |
70.6° |
71.8° |
71.8° |
71.8° |
Saddle Height At Saddle Offset mm |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Saddle Offset At Saddle Height mm |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Headtube Length mm |
105 |
110 |
115 |
105 |
110 |
115 |
105 |
110 |
115 |
Headtube Angle mm |
66° |
66° |
66° |
65.5° |
65.5° |
65.5° |
66.8° |
66.8° |
66.8° |
Chainstay Length mm |
440 |
440 |
440 |
440 |
440 |
440 |
440 |
440 |
440 |
Front Centre mm |
762.5 |
792 |
830 |
766.5 |
796 |
834 |
755.5 |
785 |
823 |
Wheelbase mm |
1205 |
1235 |
1271 |
1209 |
1239.1 |
1275.1 |
1198 |
1228 |
1264 |
Bottom Bracket Drop mm |
-33 |
-33 |
-33 |
-30 |
-30 |
-30 |
-39 |
-39 |
-39 |
Bottom Bracket Height mm |
336 |
336 |
336 |
336 |
336 |
336 |
330 |
330 |
330 |
Stand Over Height mm |
736 (High) |
744 (High) |
769 (High) |
739 (High) |
747 (High) |
772 (High) |
730 (High) |
738 (High) |
763 (High) |
Fork Travel mm |
140 |
140 |
140 |
150 |
150 |
150 |
130 |
130 |
130 |
Trail mm |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Fork Offset mm |
44 |
44 |
44 |
44 |
44 |
44 |
44 |
44 |
44 |
Axle To Crown mm |
554 |
554 |
554 |
564 |
564 |
564 |
537 |
537 |
537 |
Maximum Seatpost Insert mm |
215 |
250 |
300 |
215 |
250 |
300 |
215 |
250 |
300 |
What size frame do I need if I am between sizes? - read here
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