Cube Reaction SLX 2025 Slate/Black Cross Country Bike

Available with Cube in the sizes shown above. Expect delivery within 8-9 working days of placing an order.

The Reaction’s sleek looks are thanks to its Smooth Welded head tube and seat tube junctions. It incorporates a threaded bottom bracket and internal cable routing for long-lasting service and simple maintenance. There’s even a flat disc mount that integrates seamlessly with our kickstand mount, and integrated mounting points for ACID mudguards and carrier.

Trail-ready geometry includes a lower top tube and tapered head tube for more confident handling, cables run internally for reduced maintenance, and there’s plenty of room to run wide, grippy and comfortable 2.25in tyres. And, as your skills increase, there’s scope to fit a dropper post upgrade.

What do you do to improve the ride of a great bike that already features great components? You fit better brakes. The Reaction SLX’s Shimano XT hyudraulic disc brakes’ powerful, progressive control don’t just help keep you safe, they also help you ride faster and have more fun.

Combined with the smooth control of the RockShox Judy Silver air fork and easy shifting of the Shimano XT 1×12 gears, you’re pretty much all set. The Schwalbe Racing Ralph 2.25in tyres – fast-rolling, smooth and grippy – round out the complete trail explorer.

Specification

Frame	Aluminium Lite, AMF, Double Butted, Internal Cable Routing, Tapered Head Tube, Flat Mount Brake, SIC Mount, FM Kickstand Mount
Fork	RockShox Judy Silver TK Air, 100mm, PopLoc
Headset	CUBE FPH868, Semi-Integrated
Stem	CUBE Performance CPS-Race
Handlebar	CUBE Rise Trail Bar, 680mm
Brake System	Shimano XT BR-M8100, Hydr. Disc Brake, PM/FM (160/180)
Shifters	Shimano XT BR-M8100, Hydr. Disc Brake, PM/FM (160/180)
Rear Derailleur	Shimano XT RD-M8100-SGS, ShadowPlus, 12-Speed
Bottom Bracket	Prowheel BSA PW-MB68
Crankset	Shimano FC-MT611, 32T, Boost
Chainring Size	32T
Cassette	Shimano Deore CS-M6100, 10-51T
Chain	KMC X12
Rims	CUBE EX25, 32H, Disc, Tubeless Ready
Front Hub	Shimano HB-QC300, QR, Centerlock
Rear Hub	Shimano FH-QC500-MS, QR, Centerlock
Tyres	Schwalbe Racing Ralph, Addix Performance, Kevlar, 2.25
Pedals	CUBE PP MTB
Saddle	ACID Venec Lite
Seatpost	CUBE Performance Post, 27.2mm
Seatpost Clamp	CUBE Varioclose, 31.8mm
Quoted Weight	13.3 kg
Max System Weight	150 kg – The maximum system weight is the maximum total weight of the bike, rider and any luggage combined

Specifications are subject to change without notice

Size Guide

Frame Size	Minimum Height	Maximum Height
X Small	155cm (5’0”)	163cm (5’3”)
Small	163cm (5’3”)	171cm (5’6”)
Medium	171cm (5’6”)	179cm (5’9”)
Large	179cm (5’9”)	187cm (6’1”)
X Large	187cm (6’1”)	195cm (6’4”)
XX Large	195cm (6’4”)	203cm (6’7”)

We have developed our size guide from our selling experience and it may differ from the manufacturers guide. Please note, this is only a guide and if you have any concerns over sizing please get in contact

Geometry

Frame Size	XS 27.5”	S 27.5”	M 29”	L 29”	XL 29”	XXL 29”
Seat Tube	340	370	420	470	515	560
Top Tube Horizontal	555	575	595	615	635	655
Seat Angle	74	73.5	73.5	73.5	73.5	73.5
Head Tube Angle	68.5	68.5	68.5	68.5	68.5	68.5
Chainstays	427	427	450	450	450	450
Head Tube	108.2	111	111	121.8	141.8	156.8
Wheelbase	1067.5	1082.1	1125.4	1146.4	1168.2	1189.6
BB-Height to Hub	51.5	51.5	65	65	65	65
Reach	384.4	398	409.2	426.2	440.7	456.6
Stack	595	597.6	627.3	637.4	656	669.9
Seat Post Length	350	350	400	400	400	400
Seat Post Diameter	27.2	27.2	27.2	27.2	27.2	27.2
Stem Angle	6	6	6	6	6	6
Crank Length	175	175	175	175	175	175
Max Tyre Diameter	708	708	747	747	747	747
Stem Length	50	50	60	60	70	70
Handlebar Width	680	680	680	680	680	680

Want to compare the size of your current bike to this one? Read our Reach and Stack guide here.

Bike Classification

Bike Classification	Category 2
Intended Use	Leisure riding and trekking under moderate effort
Intended Terrain	Paved surfaces, unpaved roads and gravel paths with moderate uphill and downhill gradients. Under these conditions, contact with uneven terrain and repeated loss of tire contact with the ground may occur. Drops are limited to 15 cm or less
Recommended riding skills	No special riding skills required

Additional Information

Manufacturer	Cube
RRP	No

Write Your Own Review

You're reviewing: Cube Reaction SLX 2025 Slate/Black Cross Country Bike

• *Nickname
• *Summary of Your Review
• *Review

Submit Review