Elongated secondary transmission 15/39 POLINI for HONDA SH 125 and 150 before 2012 (bearing Ø12mm)

Secondary transmission POLINI. This transmission is ideal to start anew and gain top speed on large configurations (kit 150cc + air filter + sport dimmer + reprogramming box), indeed, we often come to the limits of the scooter (dimmer and corrector torque closed and fully open, engine at full throttle) ... Thanks to the elongated transmission, you will get more top speed at the same engine speed, usually a gaind e 15 to 20km / h from 9000 to 11,500! This transmission is only mounted on HONDA 125 and 150 engines before 2012.

Mounts on: scooter HONDA SH 125 and 150 before 2012, to ask with a bearing Ø12mm as the origin!