POLINI elongated 13/40 primary transmission Competition for PIAGGIO air and liquid scooter

The transmission is extremely important in a good preparation, if your variator and torque controller are at their maximum, your engine revolutions minute also and the top speed is not enough! Just change your transmission to fully exploit your top speed while obviously losing some acceleration, it will also allow adjustments, a different torque, it will accompany the new settings variator / push spring.



We recommend it with a racing crankcase mounted on bearings and a good transmission oil. The primary transmission is the one on which the clutch bell is attached, there is also secondary transmission. The POLINI transmission is a real race racing piece, they have the reputation of being indestructible! Enjoy it. Before purchase, we advise you to observe your primary and secondary transmission to know its teeth and therefore judge on which to take. We recommend a break-in of about 100km and an oil change after 1000/1300 km.Also this transmission is in right gear instead of being like the origins or top performances (TPR) in leaning toothing. The right toothing allows additional power, much less forcing transmission level, less noise ... Comes with a stainless steel sump ring (machining mandatory for the mounting of the ring) but we recommend in any case a bearing transmission case that you will have less trouble and more performance.

Attention this transmission teeth are bigger than the original so the report is thereby completely changed despite counting teeth!

Z (Toothing) = 13/40 Long Ratio You will be able to couple it to a secondary transmission, with a set of straight teeth, to obtain performance out of the way.

Mounts on scooters with PIAGGIO engines from 1999:

APRILIA Factory

APRILIA Sr

DERBI Gp1 from 2001 to 2003

GILERA Ice

GILERA Runner

GILERA Sp

GILERA Poggiali

GILERA Stalker

GILERA Storm

GILERA Typhoon

GILERA Typhoon X

PIAGGIO Extrem

PIAGGIO Extrem Lc

PIAGGIO Mc2