Required reading for a life of backing it in effectively without wheel hop and slippage coming out of hot corners. Fits All 950 Adventure, 990 Adventure, 950 Super Enduro R, 950 Supermoto, 990 Super Duke The Controlled Engine Braking System (CEB) uses advanced clutch technology bringing new and innovative performance improvements to the rapidly expanding 4-stroke Off-road, Super Moto and ATV markets. All components of this system are produced utilizing the highest quality manufacturing standards-ISO 9002-and Italian craftsmanship by STM. The CEB Clutch System is a unique and highly effective engine-to clutch-to rear wheel power management system; the only one of its kind available anywhere. When the throttle is closed, this triggers the clutch to release and decreases unwanted engine braking. Already in use by top factory riders and teams, it decreases lap times, inhibits engine stalling, increases holeshots and helps create 'neutral' jumping characteristics by decreasing rear wheel drag in 'throttle off' conditions.