
Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices
Today’s DealsReactor 275 Carbon Frame Only
A 27.5″ carbon frame full suspension trail frameset.
Manufacturer Price
£2,499($3,352)| Weight | 7.9 lbs (frame) |
|---|---|
| Frame | Carbon |
| Suspension | Full, 140 / 160mm |
| Shock | Fox Float DPX2 Factory |
| Wheels | 27.5″ |
Summary
The Nukeproof Reactor is a versatile trail bike that excels in downhill performance with its balanced handling, effective suspension, and playful ride quality. While it shows some limitations in climbing efficiency and uphill liveliness, its downhill capabilities and well-thought-out geometry make it a favorite for singletrack shredding. The bike's various models cater to a wide range of preferences, from over-forked versions for more aggressive riding to lighter builds for long-distance comfort.
Balanced and intuitive handling
Effective suspension with good support
Playful and fast downhill performance
Well-thought-out geometry
Versatile model range catering to different riding styles
Middling climbing efficiency
Some models may feel under-braked for heavier riders
Internal cable routing can cause noise on rough descents
Not the lightest option in its category
The Nukeproof Reactor 290C Factory proves that the amount of travel alone says very little about the downhill capabilities of a bike: despite having just 130 mm rear travel, we would happily take the Nukeproof to some enduro races!
You’d think with less travel the Nukeproof Reactor Pro 290 Alloy would be muscled out by the Whyte T160 and Specialized Stumpjumper EVO, but it’s able to hold its own because Nukeproof has totally nailed the geometry, suspension and ride feel
The Nukeproof Reactor 290 ST is a sprightly addition to the niche of shorter-than-short-travel trail bikes.
Feedback?
View all reviews

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 · Jessie-May Morgan
We take a look at the 2021 Reactor trail bike offering from Nukeproof, including a new higher spec aluminium build and the Reactor ST.

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. .

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.

Jan 2020
The Reactor feels like a bike with classic, old school all-mountain intentions, constructed with the colloquialisms of the contemporary mountain bike.
| 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 BB Standard: BSA, 73mm, Threaded Colors: Bottle Blue; Concrete Grey |
|---|---|
| Shock | 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) Travel: 140mm |
| Bottom Bracket | BSA, 73mm, threaded |
| Headset | Nukeproof, 44-56 IITS |
First added March 2
Last updated December 7
Not listed for 1,634 days