Compare bikes: Compare Btwin Rockrider 520 Suspension Mountain Bike - Black/Orange (2017) vs. Trek Marlin Marlin 5 (2017) - Findabike

KMC Z51

Shimano Tourney TY501, 42/34/24

Front: Shimano Tourney TY500 - Rear: Shimano Tourney TY300

Shimano Altus EF51, 7-speed

Shimano HG20, 12-32, 7-speed

Suntour XOR hydraulic fork. 120 mm travel. Magnesium blades for lower weight. Lockout at the top of the damper for faster terrain. Preload (stiffness of the fork) easily adjusted with mechanism at the top of the left damper. A tried-and-tested fork.

B'Twin Sport oversized frame with rear suspension, made from 6061 aluminium. 120 mm travel in the rear based on a monopivot system that is highly sensitive to small shocks while at the same time remaining stiff when going over large impacts. System mounted on sealed bearings for lasting durability. Comfortable geometry and effective steering. Caster angle at 69° for more stability. Weight: 2.7 kg in size M without shock.

Alpha Silver Aluminium w/semi-integrated head tube, rack and mudguard mounts, G2 Geometry on 29ers

1-1/8" threadless, semi-integrated, semi-cartridge bearings

Lightweight X-Fusion E1 shock absorber specifically designed for this frame, easy to adjust to the weight of the rider using a Schrader valve: excellent sensitivity/performance ratio.

Front: SR Suntour XCT, coil spring, preload, hydraulic lockout, G2 Geometry w/51mm offset on 29ers, 100mm travel (13.5: 80mm travel)

Rockrider Sport stem with oversized diameter, a 6° incline, and 80 mm (S), 90 mm (M) or 100 mm (L and XL) long.

Bontrager Alloy, 31.8mm, 7mm rise, Blendr compatible

Front: Formula DC20 alloy - Rear: Formula DC22 alloy

Bontrager Connection 32-hole double-walled

Front and rear Kenda Nevegal 26x2.10 rigid bead tyre, known for its versatility. This tyre performs well on any type of terrain regardless of weather (dry or humid) thanks to very pronounced lugs well distributed all the way to the sides, and its "Stick-E" soft rubber composition that provides better grip. Tyres mounted with inner tubes.

Bontrager XR2, 29x2.20" front, 29x2.00" rear (13.5 & 15.5: 27.5x2.20")

New B'Twin Sport double-walled rims. B'Twin Sport hubs. Stainless steel spokes with a 2 mm diameter: impact- and corrosion-resistant.

Formula alloy hubs, Bontrager Connection 32-hole double-walled rims

Auriga Comp 160 mm hydraulic disc brakes at the front and rear for greater braking power and precision, even in extreme conditions (e.g. mud).

Tektro M280 mechanical disc

Oversize diameter, 660 mm wide Rockrider Sport aluminium handlebar: stiffer and more stable on descents. - Semi-integrated Aheadset headset for improved watertightness, precision steering, and an integrated look. B'Twin Sport handles with grooves, 120 mm long: genuine comfort while riding.

Bontrager alloy, 31.8mm, 15mm rise

B'Twin Sport bi-material saddle, known for its comfort. - B'Twin Sport bi-material saddle, known for its comfort. - B'Twin Sport bi-material saddle, known for its comfort.

Bontrager Evoke 1

Rockrider 29.8 mm diameter 350 mm long seat post. Quick, tool-free saddle adjustment.

Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset

Rockrider Sport stem with oversized diameter, a 6° incline, and 80 mm (S), 90 mm (M) or 100 mm (L and XL) long.

Bontrager Alloy, 31.8mm, 7mm rise, Blendr compatible

Wellgo MTB platform pedals with toe clip for holding the foot firmly in place.