2018 CUBE

REACTION SL 29

A 29″ aluminum frame hardtail crosscountry bike with high-end components.
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Weight28.0 lbs  
FrameAluminum
SuspensionHardtail, 100mm
ForkFox Rhythm Float 32
Wheels29″ Aluminum
Drivetrain2 × 11
GroupsetXT
BrakesHydraulic Disc
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
REACTION SL 29
Other Crosscountry 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)

28 mph

REACTION SL 29

27 mph

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Highest gear

(descending)

Reviews
Singletrack World
Review: 2018 Cube Reaction TM - a ready to roll package

Dec 2018 · Hannah Dobson

Cube has a reputation for well priced bikes – you get a decent amount of bike for your money. It’s a brand you’ll find in many a local bike shop,...

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off.road.cc
Cube Reaction TM review

Apr 2018

Cube's Reaction TM is a harder hitting version of their high-value aluminium Reaction hardtail range, pairing a sturdy 130mm fork up front with fat 2.6" tyres on 27.5" wheels. It's cracking value and much more capable in the rough than the rest of the range if you like hacking about in the woods, but there are harder edged weapons out there if you want to go full gonzo. Buying your first mountain bike - the complete guide to getting started First Look: 2018 Cube Stereo 140 HPC - all-new trail full suspension platform When should you replace your bicycle chain?

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BikeRadar
Cube Reaction GTC SL review

Sep 2016 · Guy Kesteven

A great-value example of exactly how fast and much fun an XC hardtail should be. Buy if you're looking for a fast, fun cross country ride

Highs
  • Excellent balance of efficiency and speed sustain over rough terrain

  • Smooth, remote control Fox fork and full Shimano XT spec

Lows
  • Slightly heavy frame, fragile tyres and temperamental XT brakes

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Aluminium Lite, AMF, ARG, Internal Cable Routing, Easy Mount Kickstand Ready, Tapered Headtube, PressFit BB

BB StandardBSA, 73mm, Threaded

Fork

Fox 32 Rhythm, 2-Position Remote Lever, Tapered, 15x110mm, 100mm

Travel100mm

Spring TypeAir

Bottom Bracket

BSA, 73mm, threaded

Headset

FSA Orbit I-t, Integrated, Top 1 1/8", Bottom 1 1/2"

Stem

CUBE Performance Stem Pro, 31.8mm

Handlebar

CUBE Flat Race Bar, 720mm

Saddle

Selle Royal MTB

Seatpost

CUBE Performance Post, 27.2mm

TypeRigid

Pedals

CUBE Aluminium MTB

Grips

CUBE Performance Grip

Groupset
Rear Derailleur

Shimano XT RD-M8000-DSGS, ShadowPlus, 11-Speed

Front Derailleur

Shimano XT FD-M8020-D, Side Swing

Crank

Shimano XT FC-M8000-B2, Boost, 36x26T, 175mm

Shifters

Shimano XT SL-M8000-I, Direct Attach

Cassette

Shimano SLX CS-M7000, 11-42T

Chain

Shimano CN-HG600-11

Brakes

Shimano XT BR-M8000, Hydr. Disc Brake (180/160)

TypeHydraulic Disc

Wheels
Rims

CUBE EX21, 32H, Disc, Tubeless Ready

Front Hub

Shimano Deore HB-M6010, 15QR, Boost

Rear Hub

Shimano Deore FH-M6010-B, 12mm, Boost

Tires

Front: Schwalbe Tough Tom, Active, 2.25, Rear: Schwalbe Rapid Rob, Active, 2.25

Rider Notes
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Last updated April 14
Not listed for 2,260 days