Hoca 54mm Minarelli Big Bore Kit - Tall

Hoca Big Bore Head Kit for 90cc 2-stroke 50QMF, E50QMF, 1E50QMF and 1PE50QMF Minarelli engines. 54mm with 12mm wrist pin, includes cylinder head.

This kit should be used with the 45mm Stuffer Stroker (+3mm) Crank for optimal performance!