Slipper Clutch - Motorcycle Terms Explained

A staple of modern motorcycles, we check out what a slipper clutch actually does

Also referred to as back torque limiter by some manufacturers, a slipper clutch is used to eliminate the possibility of locking of rear wheel during rapid downshifting. It is a type of clutch in which the clutch plates slip against each other to lower the effects of engine braking, thus allowing the rear wheel to spin and not lock during downshifts. Slipper clutches also have an assist function, which helps make the clutch lever action much lighter.

In a conventional clutch system, the crankshaft and clutch assembly rotate faster than the rear wheel during engine braking, which can cause the rear wheel to slow down drastically when the rider downshifts aggressively, thus resulting in loss of traction. In a slipper clutch assembly, when the rear wheel slows down, the pressure on the clutch plates also reduces. Due to this, they slip against each other, preventing the wheel from locking. A slipper clutch is generally offered in sports bikes for better control and faster lap times while riding fast, reducing wear and tear and smoother ride quality.

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