SCHLUMPF two-speed internal bicycle gearbox with chainring and crank arm on a white background

SCHLUMPF MOUNTAIN/HIGH/SPEED-DRIVE 2:SPEED GEARBOX CHAIN.SET

£775.00

OPTION mountain-drive mountain-drive with easy-shift plates speed-drive speed-drive with easy-shift plates chamfering tool for high/speed-drive (tool only) high-speed-drive high-speed-drive with easy-shift plates

ltra-thin (10 mm) planetary gearbox that sits in the chainring. No bulky casing, no extra cables or derailleurs. Heel tap on the side button to shift, from a standstill or under load. Full torque both pedalling directions, so it works with fixed-gear and coaster brakes. Low maintenance, high efficiency, built to last.

Change gear with a heel tap on the side buttons, standing still or under heavy load

Low maintenance

No cables, levers or derailleurs

High efficiency, high quality materials, for long service life

Symmetrical clutch allows full torque both pedalling directions, for coaster brakes and fixed-gear bikes without a rear brake

Optional EASY-SHIFT plates available on request. Cover the crank arms for a larger push area, best for clip-in pedals

SPEED-DRIVE ratios: 1x direct-drive and 1.65x overdrive

HIGH-SPEED-DRIVE ratios: 1x direct-drive and 2.50x overdrive

MOUNTAIN-DRIVE ratios: 1x direct-drive and 0.40x reduction for the steepest climbs

Also compatible with most popular folding bikes

Chainring not included