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Today’s DealsReactor 275c Pro
A 27.5″ carbon frame full suspension trail bike with high-end components.
| Frame | Carbon |
|---|---|
| Suspension | Full, 140 / 150mm |
| Fork | RockShox Pike Select+ |
| Shock | RockShox Super Deluxe Select+ |
| Wheels | 27.5″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | GX Eagle |
| Brakes | SRAM Guide RE Hydraulic Disc |
| Seatpost | Dropper |
5'2" – 5'8"
5'6" – 5'11"
5'10" – 6'3"
6'1" – 6'7"
🐐 Estimated
None yet.
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Summary
The Nukeproof Reactor is a versatile trail bike that excels in descending with its active suspension platform and stable, stiff frame, making it a capable machine for rough terrain. While it's not the most efficient climber due to its long reach and slack seat angle, it offers good value and a playful ride that bridges the gap between trail and enduro bikes.
Active suspension platform for fantastic traction
Stable and stiff frame for rough terrain
Good value for the price
Playful and versatile ride
Bridges the gap between trail and enduro
Not as efficient a climber as other trail bikes
Long reach and slack seat angle can hinder climbing
Can feel cumbersome in tight terrain
The thing absolutely charges, plain and simple.
a mile-munching trail bike worthy of aspiring mountain goats, while also being a seriously capable machine for descents.
The Nukeproof Reactor is a mini enduro bike that can take on the roughest trails despite its short travel!
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Nov 2021 · Paul Burwell
If you’re a rider that’s focused on shredding singletrack rather than bike parks, the Nukeproof Reactor Pro 290 Alloy is a superb mid-travel trail bike
Superb balance, insanely fast singletrack shredder
A little lightweight for burlier riders

Jul 2021 · Robin Weaver
The Reactor ST isn't as fast as some uphill, but it’s a proper demon when pointed back down
Surefooted downhill demon
Great spec at a reasonable price
Good geometry and ride position
Easy going but not as efficient as some uphill
Only slightly lighter than the top-spec Reactor which has more travel and a burlier build

Dec 2020
Recently re-launched and now a full time member of the Nukeproof Reactor family, the Reactor 290 ST is a shorter travel version of the full suspension trail bike. With a lithe and resposive feel and top spec components, this bike – so long as you're happy to lock out the shock for climbing – makes a mean mile muncher. Merida One-Forty 600 review Vitus Mythique 29 VRS review The best ways to find new mountain bike trails As a 125mm full suspension trail bike, the Reactor 290 ST was designed for legendary downhill and enduro racer Sam Hill to ride in the off-season.

Oct 2020 · Nukeproof
Designed as the ultimate hard-charging hooligan of a trail bike and conceived for those riders that are looking for ultimate speed and style out on the trails, the RS is slightly over-forked, featuring +10mm of travel up front over the rest of the range to excel when on the most technical and mini enduros and downhill trails. .

Apr 2020 · Jessie-May Morgan
Nukeproof drop the Reactor ST; a limited edition lightweight short-travel version of the all-mountain Reactor with build spec worthy of an XC race bike.

Mar 2020 · McCoy
Shredding trails since 1996

Mar 2020 · Iceman2058
Nukeproof's take on the short/mid-travel trail bike turns out to be very capable - and tons of fun to ride.

Feb 2020 · Christoph Bayer
Despite having only 130 mm travel, the Nukeproof Reactor 290C RS was one of the most capable descenders in this group test. Its spec leaves no doubt about its performance and the geometry is spot on – but if the bike is so great, why didn’t it come out on top? Click here for an […]
Corners like it’s on rails
Excellent rear suspension
Well-rounded package
Not the most spritely
RockShox Charger RCT3 rather than the RC2 damper
| Frame | Nukeproof Reactor 275 Carbon, 140mm Rear Travel, UD woven Carbon Fibre front triangle/chain stays/seat stays, internal cable routing, custom tuned rear shock, Enduro bearings, threaded bottom bracket, boost 148mm rear axle spacing, 3D contoured frame protection BB Standard: BSA, 73mm, Threaded Tire Clearance: 2.6" |
|---|---|
| Fork | RockShox Pike Select + Charger 2 RC 150mm, 46mm Offset, BOOST, Debonair, Diffusion Black Travel: 150mm Spring Type: Air |
| Shock | RockShox Super Deluxe Select+ RT, Custom ML 380 tune, 210x55mm, Bearing End (Comes with 1x bottomless token fitted so you have them if needed.) Travel: 140mm |
| Bottom Bracket | Threaded 73mm BSA |
| Headset | Nukeproof, 44-56 IITS |
| Stem | Nukeproof Horizon, 50mm, Black |
| Handlebar | Nukeproof Horizon 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm) |
| Saddle | Nukeproof Horizon SL, Yellow |
| Seatpost | RockShox Reverb Stealth with 1x Remote, 31.6mm; S: 346mm length, 125mm drop; M: 409mm length, 150mm drop; L: 462mm length, 175mm drop; XL: 514.5mm length, 200mm drop Type: Dropper |
| Grips | Nukeproof Sam Hill Signature |
| Rear Derailleur | SRAM GX Eagle 12-Speed |
|---|---|
| Crank | SRAM GX Eagle 12-Speed, 170mm, 32T, B148, DUB |
| Shifters | SRAM GX Eagle 12-Speed |
| Cassette | SRAM GX Eagle 12-Speed, CS PG1275 EAGLE 10-50T |
| Chain Guide | ISCG05 |
| Brakes | SRAM Guide RE Type: SRAM Guide RE Hydraulic Disc |
| Rims | Front: DT Swiss M1700 SPLINE 30, 27.5", 6 Bolt, 110x15mm, Rear: DT Swiss M1700 SPLINE 30, 27.5", 6 Bolt, XD Driver, 148x12mm |
|---|---|
| Rear Hub | Boost 148x12mm |
| Tires | Maxxis Assegai 27.5”x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Minion DHR II 27.5”x2.4 WT 3C MaxxTerra/EXO+/TR |
| Disc Rotors | SRAM Centerline, 200mm (Front), 180mm (Rear) |
First added October 29
Last updated September 12
Not listed for 2,085 days