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2021 Nukeproof

Reactor 290 Alloy Pro

A 29″ aluminum frame full suspension trail bike with high-end components.
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Manufacturer Price

£3,699($4,961)
Weight31.7 lbs  
FrameAluminum
SuspensionFull, 130 / 140mm
ForkRockShox Pike Select+
ShockRockShox Super Deluxe Select+
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetGX Eagle
BrakesSRAM Guide RE Hydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Reactor 290 Alloy 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 290 Alloy Pro

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
MD

5'4" – 5'10"

LG

5'8" – 6'3"

XL

6'0" – 6'6"

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews

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.

Pros
  • 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

Cons
  • 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

Key Quotes
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!
Enduro Mountainbike Magazine logoEnduro Mountainbike Magazine
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
MBR logoMBR
The Nukeproof Reactor 290 ST is a sprightly addition to the niche of shorter-than-short-travel trail bikes.
off.road.cc logooff.road.cc

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BikeRadar
Nukeproof Reactor 290 Alloy Pro review

May 2022 · Tom Marvin

Riders looking to aim their front wheel down the steepest, roughest tracks will find the Reactor fits the bill

Highs
  • Smooth suspension paves the way for high-speed fun

  • Decent kit

  • Stout front end

Lows
  • Bit of a drag on the hills

  • Takes effort to generate speed on flatter terrain

Read Review

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

Read Review

Enduro Mountainbike Magazine
Nukeproof Reactor Factory 290C Factory 2021 in review - Great handling meets great spec

Jun 2021 · By

Gravity fans watch out! Downhill, the Nukeproof Reactor 290C Factory leaves most of its competitors behind in a cloud of dust. The spec leaves no room for complaint either – we’re big fans of Nukeproof's approach of putting trail performance ahead of weight. But is this enough for the Reactor 290C Factory to secure our coveted Best in Test?

Highs
  • Well thought-out spec suits the intended purpose

  • Intuitive, balanced handling

  • Good suspension

  • Comfortable pedalling position for long rides

Lows
  • Climbing efficiency

Read Review

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.

Read Review

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. .

Read Review

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

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.

Read Review

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

Mar 2020 · McCoy

Shredding trails since 1996

Read Review

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.

Read Review

Geometry
Specs
Build
Frame

Nukeproof Reactor 290 Alloy, 130mm Travel, custom triple butted hydro-formed tube set for front triangle and chain stays, UD woven carbon fibre Seat stays, internal cable routing, internal cable routing, ISCG 05 mount, Enduro bearings, threaded 73mm BB, Boost 148mm rear axle spacing, 3D contoured rubber frame protection

BB StandardBSA, 73mm, Threaded

ColorBrushed Alloy

Fork

RockShox Pike Select + Charger 2 RC 140mm, 42mm Offset, BOOST, Debonair, Gloss Black

Travel140mm

Spring TypeAir

Shock

RockShox Super Deluxe Select+ RT, Custom ML 320 tune, 210x50mm, Bearing End, 1x bottomless token fitted.

Travel130mm

Bottom Bracket

BSA, 73mm, threaded

Headset

Nukeproof, 44-56 IITS

Stem

Nukeproof Neutron AM, 45mm, black

Handlebar

Nukeproof Horizon V2 25mm Rise, Width - M780mm, L800mm, XL800mm)

Saddle

Nukeproof Horizon SL, Black

Seatpost

Brand X Ascend internal, 31.6mm, M:150mm drop; L/XL: 170mm Drop

TypeDropper

Grips

Nukeproof Sam Hill Signature

Groupset
Rear Derailleur

SRAM GX Eagle 12-Speed

Crank

: SRAM GX Eagle 12-Speed, 170mm, 30T, B148, DUB

Shifters

SRAM GX Eagle 12-Speed

Cassette

SRAM GX Eagle 12-Speed, CS XG1275 EAGLE 10-52T

Chain

SRAM GX Eagle 12-Speed

Brakes

SRAM Guide RE

TypeSRAM Guide RE Hydraulic Disc

Wheels
Rims

Front: Nukeproof Neutron V2 29", Tubeless Ready, 32h, 110x15mm, Rear: Nukeproof Neutron V2 29", Tubeless Ready, 32h, SRAM XD Driver with 36 points of engagement, 148x12mm

Tires

Front: Maxxis Assegai 29”x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Dissector 29”x2.4 WT 3C MaxxTerra/EXO+/TR

Rider Notes
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First added March 2

Last updated December 7

Not listed for 1,634 days