B'Twin Rockrider AM 50 Mountain Bike

B'Twin Rockrider AM 50 SRAM SX MTB

Some AM 50 photos

Complete MTB specification

This full suspension mountain bike has been designed for all-mountain riding.

It's particularly good for improving your riding skills. Perfect for finding your flow on landscaped terrain and technical singletracks. Really efficient on climbs and reassuring on descents, making it the most all-round bike in our AM range.

Frame: Composition: 6061 and 6013 aluminium.

Switch And Ride frame: compatible with 27.5" and 29" wheels. 148 mm x 12 mm BOOST rear axle.

48 mm x 12 mm BOOST. Bolt through axle. Pressfit 92 bottom bracket.

31.6 mm diameter seat tube.

Bottle cage mounting: 1.

Weight in size S: 2.7 kg.

Drive train: SRAM SX.

single chainring: 30 T (compatible with 32 or 34 T).

Crank: 170 mm (S), 172.5 (M / L) and 175 (L / XL).

Rear derailleur: 12 speeds. SRAM Eagle 11-50 cassette (11-13-15-17-19-22-25-28-32-36-42-50). SRAM Eagle chain.

Suspension: ROCKSHOX RECON fork.

Travel: 140 mm. 32 mm stanchions.

Bolt through axle. 15 x 110 mm BOOST format. Motion Control cartridge.

Fast Black finish on the steel stanchions. Solo Air spring. Manitou Radium shock.

140 mm / 190 x 51 mm. Models specifically designed for this bike's kinematics.

Wheels: SUN RINGLE wheels.

Duroc 30 in 29" | 26 mm inner width for L & XL frames. Duroc 30 in 27.5"| 26 mm inner width for S & M frames. 32 round spokes.

6-bolt disc mounting. HD freehub. Sealed bearings.

BOOST axles: 15 mm front and 12 mm rear. Tubeless Ready and equipped with rim tape.

Brakes: Hydraulic disc brakes.

SRAM Level.

Number of pistons: 2. Sram G2 discs.

Front disc: 180 mm.

Rear disc: 160 mm. 6-bolt mounting.

Riding position: Rockrider Comp Flat handlebar.

Material: aluminium.

Weight: 345 g.

Diameter: 31.8 mm.

Width: 740 mm.

Rise: 25 mm.

Upsweep: 6 degrees .

Backsweep: 9 degrees . Rockrider stem.

Material: Aluminium.

Angle: 0 degrees .

Sizes: 60 mm.

Grips: Rockrider 900 Lock On.

Saddle / Seat post: Rockrider Ergofit saddle.

Weight: 260 g.

Dropper seat post: Travel: 150 mm (L / XL), 120 mm (S / M).

Weight: 650 g.

Tyres: Hutchinson TORO.

29" x 2.10" (L / XL), 27.5" x 2.25" (S / M).

Carcass: 66 TPI. Not tubeless compatible.

Pedals: Rockrider 520 Grip resin flat pedals.

Weight: S - 150-164cm : 14.4 kg.

M - 165-174cm : 14.6 kg.

L - 175-184cm : 15 kg.

XL - 185-200cm : 15.1 kg.
.. more details.

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.