PROX Uitlaatklep Titanium KTM Renthal Ultralight™ Self Cleaning Rear Sprocket Renthal Ultralight™ Self Cleaning Rear Sprocket Slide the new throttle tube on the handlebar and lube using a penetrating lubricant preferably Maxima MPPL (do not use grease as this attracts dirt and makes the throttle stick after a short period of time) resulting in optimal thermal resistance and a longer service life Prox titanium valves are precision forged from one piece and coated with plasma