CUBE Reaction, SLX

Name: CUBE Reaction, SLX
Brand: CUBE

2025 MountainCross-country Manufacturer page

CUBE Reaction, SLX, color Slateblack’n’black

Price: Not published

Prices shown first for United States
Europe: €1,199 Last known price
Fork travel: 100 mm
Wheels: 27.5″, 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
Weight: 13.3 kg 29.3 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 158–167
SM 165–173
MD 169–180
LG 177–186
XL 183–191
XXL 186–194

Components

19 of 20 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Aluminium Lite, AMF, Double Butted, Internal Cable Routing, Tapered Head Tube, Flat Mount Brake, SIC Mount, FM Kickstand Mount Not identified

Suspension

1 part

Fork
- RockShox Judy Silver TK

Drivetrain

6 parts

Bottom bracket
- Prowheel
PW-MB68
Cassette
- Shimano Deore CS-M6100 12 speeds 10–51t
CS-M6100
Chain
- KMC
Crankset
- Shimano 32t
FC-MT611
Rear derailleur
- Shimano Deore XT RD-M8100-SGS 12 speeds
RD-M8100-SGS
Shifters
- Shimano Deore XT SL-M8100-IR 12 speeds
SL-M8100-IR

Brakes

1 part

Brakes
- Shimano Deore XT BR-M8100
BR-M8100

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Grips
- Acid
Handlebar
- Cube
Headset
- Cube
Pedals
- Cube
Saddle
- Acid
Seatpost
- Cube
Stem
- Cube

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 409mm

Stack 627mm

Wheelbase 1125mm

Head angle 68.5°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	384	398	409	426	441	457
Stackmm	595	598	627	637	656	670
Top tube lengthmm	555	575	595	615	635	655
Seat tube lengthmm	340	370	420	470	515	560
Head tube lengthmm	108	111	111	122	142	157
Head tube angle	68.5°	68.5°	68.5°	68.5°	68.5°	68.5°
Seat tube angle	74°	73.5°	73.5°	73.5°	73.5°	73.5°
Chainstay lengthmm	427	427	450	450	450	450
Wheelbasemm	1068	1082	1125	1146	1168	1190
Front centermm	646	660	683	704	726	748
Bottom bracket dropmm	52	52	65	65	65	65
Bottom bracket heightmm	303	303	309	309	309	309
Fork rakemm	43	42	46	46	46	46
Trailmm	94	95	98	98	98	98
Stack/reach ratio	1.55	1.50	1.53	1.50	1.49	1.47
Suspension and parts
Crank lengthmm	165	170	170	175	175	175
Handlebar widthmm	680	680	720	720	720	720
Stem lengthmm	50	50	60	60	70	70
Stem angle	6°	6°	6°	6°	6°	6°
Seatpost lengthmm	350	350	400	400	400	400

Not published by the manufacturer: Standover height, Front travel, Rear travel and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 13.3 kg

29.3 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 18.2 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

2 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2025
Sample: 1,508 bicycles with this information
Coverage: 87.8% of the class

Shifting

Mechanical

222 of 1,648 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2025
Sample: 1,648 bicycles with this information
Coverage: 95.9% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 35.5 km/h

Total gear range 510%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 18.2–92.8 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds

Differences across 2025 builds
Specification	This bicycle CUBE Reaction, SLX	CUBE Reaction 200, TM	CUBE Reaction 240, TM	CUBE Reaction C:62, ONE	CUBE Reaction C:62, PRO	CUBE Reaction C:62, Race
Frame
Frame material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	13.3 kg	9.9 kg	10.5 kg	11.8 kg	10.8 kg	10.1 kg
Suspension
Front travel	100 mm	50 mm	80 mm	100 mm	100 mm	100 mm
Drivetrain
Smallest chainring	32	32	30	32	32	32
Largest chainring	32	32	30	32	32	32
Rear sprockets	12	8	10	12	12	12
Smallest sprocket	10	11	11	11	10	10
Largest sprocket	51	38	46	50	51	51
Lowest gear	18.2 in	16.8 in	15.7 in	18.6 in	18.2 in	18.2 in
Highest gear	92.8 in	58.2 in	65.5 in	84.4 in	92.8 in	92.8 in
Cockpit
Derailleur hanger	Not informed	Not informed	Not informed	UDH	UDH	UDH
Other specifications
Bottom bracket standard	BSA	BSA	BSA	BB86/BB92	BB86/BB92	BB86/BB92
Fork spring	Air	Air	Air	Air	Not informed	Air
Tire width	2.25″	2.25″	2.1″	2.25″	2.25″	2.25″
Wheel size	27.5″ / 29″	20″	24″	27.5″ / 29″	29″	29″