10mm wristpin diameter

Fun without complications (6 transfer ports – 2-ring piston) Malossi cast iron thermal units, the first and simplest step to modifying your motorcycl’s engine, are the best choice for continued use of the exhaust system of an approved series or type. For these thermal units, the elevated feature of durability of cast iron is combined with the almost manically high quality standards of Malossi, one of the few companies to demand the most from even this class of thermal units. Into this is inserted the most rigid selections for the joining of the cylinder and the piston, strictly maintained within a range of 20 microns maximum of tolerance. Use Urban/Sport Power range Ø47 8-10 cv @8.500 rpm Power range Ø40 6-7 cv @9.000 rpm Suitable tuning set-up Original or homologated exhaust carburett Ø 17-19 mm

This product is intended solely for competition-sports usage. No warranty, express or implied, is offered.