Vespa PK125 ETS N XL XL2 Full Circle Crankshaft Mazzucchelli 54mm Stroke 97mm Conrod

Vespa PK125 ETS N XL XL2 Full Circle Crankshaft Mazzucchelli 54mm Stroke 97mm Conrod

• reed valve
• stroke 54.0mm
• conrod 97.0mm
• cone 24/​25mm, M12

MAZZUCCHELLI crankshafts go to the top of the class due to high quality manufacturing. Exact twist and turning resistance by this new series is made possible by using the best materials the market has to offer. All 54 mm crankshafts are outfitted with a stable connecting rod with mathematically precise partial polishing and a “Silver Bearing” (remarkably acceleration stable) for the lower connecting rod bearing. Crank webs are outfitted with additional balance wells sealed with pertinax inlets to improve gas flow. Both crankwebs have Ø 87mm. The crankshaft is available with a 20/20 or a 24/25 cone, and with a 97mm or a 105mm piston rod. The longer con rod changes timings, too. You should level out the longer stroke (51mm -> 54mm) and the longer piston rod (97mm -> 105mm) by means of a thicker base gasket!

CAUTION: for the MAZZUCHELLI 54 mm crankshaft, you'll need to mill the crankcase housing and motor casing to fit! The crankshafts can only be used in combination with a direct intake or an enlarged reed valve intake.

Conclusion: No matter if you go touring or racing; the MAZZUCCHELLI crankshaft delivers a real deal at really affordable prices!