DRT reacts to the recent developments that POLINI have produced with their racing cylinder kits and so satisfies all fans of the 135cc racing class with their 53mm stroke crankshaft.
This full circle, or high primary compression crankshaft, has the stump ETS cone with the 24/ 25mm oil seal and bearing housing diameters. The full circle crankshaft web halves are identical in size, shape and weight and have a outer diameter of 85mm. The 53mm stroke that this crankshaft provides combined with a cylinder bore of 57mm results in the 135cc that the Italian racing class requires. The highly polished con rod (length 105mm) surpasses the POLINI crankshaft in efficiency and also ensures a more effective pre combustion and more performance in all areas. Lubricating slots provide the best lubrication for the big end bearing of the connecting rod.
Conclusion: Excellent production quality combined with the best value-for-money in its price class.
Full circle crankshaft/ stroke 53mm / connecting rod 105mm / 24/25mm, M12
Full circle crankshaft with same sized crankweb halves (Ø 85mm), balanced, sturdy 105mm connecting rod, oil seal housing 24mm, bearing housing 25mm, stump cone profile with 12mm thread, incl. connecting rod bearing
SIP-TIP: Originally designed for the POLINI EVO reed valve cylinder, this crankshaft goes also well with MALOSSI, FALC, QUATTRINI or PARMAKIT cylinders. Do not forget to order the conversion bearing and -oil seal if this crankshaft is used in the V50-125/PV/ET3/PK50-125/S/XL Vespa models.