Vertical Minarelli Racing Crankshaft Top Racing full circle high quality for 1988-2001 Yamaha Zuma, Yamaha BW 50 Minarelli Vertical Scooter Engines
High Quality Racing full circle crankshaft from Top Racing. The specialist Portuguese crankshaft manufacturer is a symbol of high quality crankshafts. Increased pre-compression in the cases for more efficient filling rate. Power band shifts to a higher rev range. Due to the increased inertia of the all-metal body, not only the performance but also the torque improves. It should, however, be used with 70cc cylinders. With 50 cylinders, the performance increase is somewhat lower. The crankshaft is supplied with small end bearing. Made in Europe
Found on USA versions of 1988-2001 Yamaha Zuma, Yamaha BW 50, CW 50cc Scooters.
Please note Yamaha Zuma USA versions after 2002 use the Horizontal engine older models use the Vertical.
In the USA 2002-2011 Zuma versions use the Minarelli Horizontal 2T AC Engine. 2012 and later Zuma are called the Zuma 50f (which replaced the 2-stroke version), both 4-stroke fuel-injected models. We call this the Minarelli 4T on the Racing Planet USA website.
High Quality Racing full circle crankshaft from Top Racing. The specialist Portuguese crankshaft manufacturer is a symbol of high quality crankshafts. Increased pre-compression in the cases for more efficient filling rate. Power band shifts to a higher rev range. Due to the increased inertia of the all-metal body, not only the performance but also the torque improves. It should, however, be used with 70cc cylinders. With 50 cylinders, the performance increase is somewhat lower. The crankshaft is supplied with small end bearing. Made in Europe
Found on USA versions of 1988-2001 Yamaha Zuma, Yamaha BW 50, CW 50cc Scooters.
Please note Yamaha Zuma USA versions after 2002 use the Horizontal engine older models use the Vertical.
In the USA 2002-2011 Zuma versions use the Minarelli Horizontal 2T AC Engine. 2012 and later Zuma are called the Zuma 50f (which replaced the 2-stroke version), both 4-stroke fuel-injected models. We call this the Minarelli 4T on the Racing Planet USA website.
