2020 Nukeproof

Reactor 275c Pro

A 27.5″ carbon frame full suspension trail bike with high-end components.

FrameCarbon
SuspensionFull, 140 / 150mm
ForkRockShox Pike Select+
ShockRockShox Super Deluxe Select+
Wheels27.5″ Aluminum
Drivetrain1 × 12
GroupsetGX Eagle
BrakesHydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Reactor 275c Pro
Other Trail bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

26 mph

Reactor 275c Pro

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

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Reviews
MBR
Nukeproof Reactor Pro 290 Alloy review: dressed for success - MBR

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

Highs
  • Superb balance, insanely fast singletrack shredder

Lows
  • A little lightweight for burlier riders

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off.road.cc
2021 Nukeproof Reactor 290 Carbon ST review

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.

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Pinkbike
Nukeproof Updates Reactor Trail Bike Specs for 2021

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. .

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Bikerumor
Ltd Ed Nukeproof Reactor 290 ST is a short travel aggressive XC/Trail bike

Apr 2020

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.

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Mountain Bike Action
Mountain Bike Action's Bike Test: Nukeproof Reactor 275C Factory

Mar 2020 · McCoy

Shredding trails since 1996

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Vital MTB
2020 Nukeproof Reactor 275c RS Bike

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.

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BIKE Magazine
Tested: Nukeproof Reactor 290C Elite

Jan 2020

The Reactor feels like a bike with classic, old school all-mountain intentions, constructed with the colloquialisms of the contemporary mountain bike.

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Enduro Mountainbike Magazine
First Ride Review: Nukeproof Reactor 275 RS 2020

Oct 2019 · Finlay Anderson

The Nukeproof Reactor 275 RS marks the return of a dedicated trail bike to Nukeproof's lineup. It is decked out with top spec and promises a thrilling ride!

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
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 StandardBSA, 73mm, Threaded

Tire Clearance2.6"

Fork

RockShox Pike Select + Charger 2 RC 150mm, 46mm Offset, BOOST, Debonair, Diffusion Black

Travel150mm

Spring TypeAir

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.)

Travel140mm

Spring TypeAir

Bottom Bracket

Threaded 73mm BSA

Headset

ZS44-28.6 – T2 / ZS56/40 – B8

Stem

Nukeproof Horizon, 50mm, Black

Handlebar

Nukeproof Horizon 25mm Rise, Width - S780mm, M780mm, L800mm, XL800mm)

Saddle

Nukeproof Horizon SL, Yellow

Seatpost

31.6mm (Internal Routing for Dropper Seatpost)

TypeDropper

Grips

Nukeproof Sam Hill Signature

Groupset
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

TypeHydraulic Disc

Wheels
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)

Rider Notes
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Last updated September 12
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