Compare bikes: Compare Btwin Rockrider 560 Mountain Bike (2017) vs. Specialized Jett Jett Sport 29 (2017) - Findabike

KMC X8, 8-speed w/reusable MissingLink

Stout, forged alloy construction, 8-speed

Front: Shimano Altus, 34.9mm clamp, down-swing, 7/8-speed - Rear: Shimano Alivio, Shadow design, SGS cage, 9-speed

Shimano Altus, 8-speed

Sunrace, 8-speed, 11-34t

SR Suntour XCM, coil spring, hydraulic lock-out w/Multi-Circuit Damping, 80/100mm of travel (size specific)

Rockrider CGF Pro (Comfort Geometry Frame) 6061 aluminium frame for 27.5" wheels. "Double butted" front triangle that makes the frame 300 g lighter than the CGF Evo frame. Comfortable seating position thanks to raised steering. Narrow 27.2 mm seat post gives the bike seat 5 times greater shock absorbency than a traditional frame. Low bottom bracket at 69° angle for greater stability in turns. Short rear wheel base for maximum manoeuvrability.

Specialized A1 Premium Aluminum, Women's XC 29 Geometry, forged post-mount 160mm dropouts, replaceable derailleur hanger, kickstand mount

Front suspension: Rockshox 30 Silver, 180 g lighter than the fork on the Rockrider 540. Conical fork for stiffer directional control while steering. 100 mm travel with +/- adjustable fork stiffness (using an internal coil spring). Hydraulic internal cartridge valve that regulates bounce. Fork equipped with a lockout to prevent bobbing on faster terrain. Lockout activated directly from the handlebar using the ergonomically-shaped ComboLock shifter. - Rear suspension: No rear suspension.

Stout, 3D-forged alloy, 31.8mm clamp, 6-degree rise

Front: Shimano Center Lock, disc, 9x100mm QR, 32h - Rear: Shimano Center Lock, disc, 10x135mm QR, 32h

Stout 29, alloy disc, double-wall, pinned joint, 20mm inner width, 32h

Stainless, 14g

Hutchinson Cobra Air Light 27.5" x 2.10 tyres. Tyres for dry terrain, with high performance knobs for improved grip when turning.

Front: Ground Control Sport, 29x2.1", 60TPI, wire bead, Flak Jacket protection - Rear: Fast Trak Sport, 29x2.0", 30TPI, wire bead, Flak Jacket protection

Aero Trail Pro wheels with double-walled rims: lightweight, stiff, and durable. "Sleeved" rims and lighter tyres: the complete wheel set is 600 g lighter than the one on the Rockrider 540! 27.5" diameter: the best balance of comfort and performance. Designed with 28 spokes to reduce weight while still guaranteeing rigidity and strength.

Front and rear hydraulic B'Twin disc brakes by Tektro: more powerful braking, even in mud and rain. 160 mm front and rear discs.

Front: Shimano BL-M315, hydraulic disc, resin pads, 160mm rotor - Rear: Shimano BR-M315, hydraulic disc, resin pads, 160mm rotor

B'Twin Sport Oversize aluminium handlebar; 660 mm (size S and M), and 680 mm (L and XL). Exclusive B'Twin aluminium stem, 70 mm (size S), 80 mm (sizes M/L), and 90 mm (size XL). Stem can be raised by up to 3 cm, with 5 settings (+ 0 mm, + 7.5 mm, + 15 mm, +22.5 mm, +30 mm). Semi-integrated A-headset. Ergonomic B'Twin handles (non-cylindrical): more natural and less tiring grip. Handles have integrated tightening rings.

Stout, alloy, 8-degree backsweep, 6-degree upsweep, 10mm rise, 680mm width, 31.8mm

Specialized MTB lock-on

Exclusive B'Twin Ergofit Evo saddle offers outstanding comfort thanks to its wider "hammock" shape and good distribution of pressure points regardless of the rider's pelvis width. B'Twin Sport aluminium seat post, with a 27.2 diameter, offering a natural seat flex 5 times greater than a classic seat post. 400 mm long, offering a broad adjustment range. Ergonomically-designed seat clamp that requires half the amount of effort to close.

Women's Body Geometry Myth Sport, steel rails, 155mm

B'Twin Sport seat post in aluminium for less weight. 27.2 mm diameter provides the seat with a natural flex that's 5 times greater than a classic seat post. 400 mm long, offering a broad adjustment range.

Alloy, 12mm offset, 2-bolt clamp, 30.9mm

Stout, 3D-forged alloy, 31.8mm clamp, 6-degree rise

Comes with B'Twin Flat Evo resin pedals: both sturdy and lightweight. A large pressure surface area for more power while pedalling and improved directional control of your mountain bike. More aggressive pins for better contact between the foot and the pedal.

Specialized Dirt