Mineralli Yamaha Zuma Stroker Crank 41mm 10mm Pin

Bearings, Gaskets and Oil Seals are NOT Included with this Crank and are needed to install.

This high-quality, Ruima crankshaft is for Horizontal Minarelli 50cc 2-stroke engines with a 10mm wrist pin and 13mm taper on crank for variator.

This is a full-circle crankshaft with a 41.4mm stroke (stock stroke is typically 39.2mm) This gives you 2.2mm more stroke and allows you to reach that ever-elusive TRUE 80cc displacement, when paired with a big-bore cylinder kit! As with all perfromance parts, once installed, there is NO WARRANTY on this part.

We suggest having engine work done by a capable scooter repair shop. Geeod Stagew6 or Athena kit will match up very well.