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  1. Superpacman13

    Titanium Retainers

    We have produced a set of titanium valve retainers for RC390's, you may ask why we would do such a thing? We have found that with extended high RPM usage the stock valve retainers will fail. The angles between the collets and the retainers do not match well enough for them to hold they valve...
    • Superpacman13
    • Thread
    • 9.48mm additional basis benefit bump cams clearance commercially control due easier finger followers frequent increased issue ktm reduced replace retainer retainers shim slightly titanium valve
    • Replies: 14
    • Forum: Gray Area KTM
  2. HardRacing

    MotionPro Rev2 Revolver Throttle Kit for RC390

    MotionPro Rev2 Revolver Throttle Kit for RC390 Offers more control of the throttle & reduced hand fatigue when riding. Top End is quicker to enjoy than stock due to the progressive ramp of the variable cam reel. For more information, just click on the link below >> MotionPro Rev2 Revolver...
    • HardRacing
    • Thread
    • cam click control due enjoy fatigue hand hardracing information kit link motion pro motionpro offers progressive ramp rc390 reduced reel rev2 rev2 throttle kit revolver riding throttle variable
    • Replies: 16
    • Forum: HardRacing
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