This thread examines carefully the Rekluse Radius auto clutch in various applications and will be skewed to be more technical in nature. I'm now 35 years in trials and thus have been an automatic skeptic regarding auto clutches. I'm back to riding more of the bigger bikes off road and having experienced some injury-stall crashes in scary places, and getting older. I'm now more open to the idea of auto clutches and wish to explore them. PLAN - Fit Rekluse Radius X RMS-6357 to my 2003 KLR ($679) If that works out reliably problems and/or auto clutch quirks don't drive me nuts: - Fit Rekluse Radius CX kit RMS-7902025 to my 2019 Beta 390 RR-S ($1,079) WHAT WON'T CHANGE? - Engaging and disengaging clutch - Manual clutch control via the stock lever WHAT WILL BE DIFFERENT? - Controlling clutch slip/engagement/disengagement with the throttle (rpm) - Manual clutch control feel changed somewhat by working in series with the EXP centrifugal pack - Setting the manual clutch 'free play gain' ...and about the same info without the friggin irritating bad boy music: - Bump starting requires an adjustment (no or lots of lever free play to get clutch lockup at idle rpm?) - In 4-stroke engines sharing the engine and wet clutch oil, JASO MA-rated oil is required. That is, oil having the friction modifying additives appropriate for wet clutches. WHAT QUIRKS MIGHT BE ENCOUNTERED? - Loss of downhill engine braking if the rpm drops to idle - Loss of the in-gear 'parking brake' (sloped-surface parking issue). Rekluse provides Velcro straps to hold the front brake.