B'Twin Rockrider XC 900 Mountain Bike

B'Twin Rockrider XC 900 MTB

XC 900 Gallery

This mountain bike is designed for training regularly and participating in Cross Country (XC) mountain bike races.

Be the 1st at the finish line with the 29" stiff carbon XC frame, Rockshox Reba RL 100 mm fork, Mavic Crossmax wheels, and SRAM GX Eagle drivetrain.

Efficiency: Win: 12-speed SRAM GX Eagle, Mavic Crossmax Tubeless Ready wheels.

Lightweight: full carbon frame and seat post (frame: 1kg in M).

Shock absorption: Rockshox REBA RL 100 mm lockout fork.

Braking power: SRAM LEVEL T twin-piston brakes, 160 mm discs.

Description: A mountain bike for winning your first competitions.

The carbon frame, which is used by our technical partners Milton Ramos and Joseph De Poortere, gives you the extreme rigidity and comfort needed to rack up the miles. Weighing in at 10.3 kg in the final version, the XC 900 without doubt offers some of the best value for money on the market.

Frame: Full carbon.

1020 g in sizem. 27.2 mm seat post. Compatible with dropper posts.

Thru axle. BOOST format. PressFit 92 bottom bracket.

Compatible with 2 bottle cages Air-sprung fork: RockShox Reba RL 100 mm. Thru axle. BOOST format.

Combolock 2 handlebar lockout SINGLE CHAINRING DRIVETRAIN: New Sram GX Eagle 1x12 groupset. PG 1275 10 50 cassette.

Stylo 34 chainset (compatible with 30, 32 and 36 T) Hydraulic brakes: Sram Level T.

160 mm Tubeless ready wheels: Mavic Crossmax wheels. Tubeless Ready. 24 spoke.

6-bolt discs Handlebars: Rockrider aluminium flat.

Width: 720 mm.

Angle: 6.5 degrees.

256 g Stem: Rockrider aluminium flat.

Width: 720 mm.

Angle: - 20 degrees.

256 g Saddle: Rockrider XC Ergofit.

265 g Seat post: Carbon 27.2 mm.

Length: 350 mm (size M) 400 mm (size L and XL).

240 g Tubeless ready tyres: Hutchinson Skeleton 2.15 tubeless ready.

60 TPI carcass Pedals: BTWIN FLAT Pro.
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B'Twin Bikes

B'Twin are a popular choice of bike in the UK, partly due to their widespread distribution by Decathlon, and partly due to the value they offer. Their bikes are divided into several slightly overlapping ranges, with Triban best known for road and gravel bikes, and Rockrider gaining a reputation for high performing MTBs to suit every budget. Elops largely consist of a range of city bikes, whereas Riverside focus on hybrids. All in all, B'Twin bikes are well worth checking out given the size of their ranges; there's a model to suit most budgets.

Rockrider Mountain Bikes

Rockrider are Decathlon's off-road offerings, comprising of a series of kids bikes and adult hardtails, full suspension steeds and even a handful of high end E-MTBs.

This brand was launched in 2018, when Decathlon decided to split their B'Twin bikes into different genres. In terms of prices, there's something for everyone, with adult's MTBs starting at just over £200 and rising up to high end lightweight race bikes at nearly the £4000 mark.

If you want to ride off-road, and would prefer to buy from Decathlon, then the Rockrider mountain bike range is for you.