Secondary Slider Pulley – Aprilia/CPI/Malaguti/Yamaha

Do you have a tuned engine that is not puting the power on the ground
rear converters have agressively angled slits to provide power where you need it and smooth transitions between belt positions with minimal hang up.
Note: This pulley measures 33mm I.D. Most Minarelli engines after 1995 used a 34mm I.D. Please verify before ordering.