Rockrider 540 27.5 inch - Blue

Frame: 100.0% Aluminum 6061

S: between 1.50 m and 1.64 m M: between 1.65 m and 1.74 m L: between 1.75 m and 1.84 mIf you are on the border between 2 sizes: Take the smaller size to favor the riding phases (easier to handle bike) and comfort (more straight back). Take the larger size to favor the pedaling phase with a longer position (position more suitable for performance).

With a very marked inclination of the upper tube, over a very wide size range (from S: 1m50 to XL: 2m00), The frame of the ST 540 MTB is MIXED.

2 9-speed chainrings, an easy-to-use 18-speed range. The through axle crankset guarantees excellent rigidity and durability over time. In details: -Double chainring SHIMANO Altus 22 and 36 teeth -Front derailleur MICROSHIFT FD-M462 -Rear derailleur SHIMANO Altus- SHIMANO Acera shifters, with speed indicators -Cassette 9 sprockets 11 to 36 teeth MICROSHIFT H092 -Chain KMC X9

With its adjustable stem, the controls of the ST 540 are at hand. All aluminum, the ROCKRIDER stem of 70 mm (size S), 80 mm (size M / L) and 90 mm (size XL) can be reassembled thanks to 5 adjustment steps: + 0 mm, + 7.5 mm, + 15 mm , + 22.5 mm, + 30 mm. In details: - ROCKRIDER SPORT "oversize" aluminum painter 720 mm wide - ROCKRIDER SPORT "soft touch" handles, for good grip and pleasant contact

Our teams have imagined and designed an exclusive ROCKRIDER ERGOFIT Evo saddle. Adapted to all widths of the pool, its profile in the shape of a "hammock" is appreciable during sporty hikes. With the 27.2 mm diameter FLEX aluminum seatpost, this contributes to high comfort. Adjust the height of your saddle quickly and without tools thanks to the easy adjustment lever at the saddle clamp.

No matter the conditions in which you ride (dry / wet), the ROCKRIDER by TEKTRO 160 mm double hydraulic disc brakes for the front and rear, respond even in mud. Hydraulic braking gives you more power and progressiveness as well as a much less muscular effort to apply to the levers. The aluminum brake levers are easy to handle, light and precise.

The aluminum wheels are efficient and robust: a 27.5 "diameter and double-walled rims. Their diameter is an excellent compromise between comfort and performance. With 28 spokes, they are light, rigid and resistant. The exclusive wide tires ROCKRIDER ALL CONDITIONS LIGHT (60 TPI) 27.5 "x2.1 have lateral studs for all terrain (dry, wet).

The ST 540 bike is delivered with ROCKRIDER FLAT flat MTB pedals, with a wider bearing surface and more present studs for better support of the foot on the pedal.