Primary transmission 13/44 lengthened POLINI Competition for scooter minarelli (booster rocket, bw's, nitro, ovetto ...)

The transmission is extremely important in a good preparation, if your variator and torque controller are at their maximum, your engine level rpm 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 running time of about 100km and an oil change after 1000/1300 km.

Attention , on this transmission the teeth are larger than the origin so the ratio is totally changed despite the counting of teeth!

In addition this transmission is in straight teeth instead of being like the origins or top performance (TPR) in leaning teeth. 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.

Z ( Toothing ) = 13/44 Long Ratio You will be able to couple it to a secondary transmission, with a set of high-pitched teeth, in order to obtain performance out of the way.

Mounts on all scooters with MINARELLI vertical or horizontal motor :

APRILIA: AMICO 50 - AREA 51 - GULLIVER 50 - GULLIVER 50 LC - SR 50 LC STEALTH / RACING / NETSCAPER - SR 50 mod.1993 - SR 50 mod.94-95-96 Air - SR 50 mod.94-95-96 H2O - SR 50 WWW
ATALA: CAROSELLO 50
BENELLI: 491 50 GT-ST - 491 50 RR-RACING-SP-SPORT - K2 50 - K2 50 LIQUID COOLED - NAKED 50
BETA: ARK 50 AIR - ARK 50 LC-SERIE K
ITALJET: DRAGSTER 50 LC
MALAGUTI: CENTRO 50 SL - F 12 50 PHANTOM 2000 - F 12 50 PHANTOM LC - F 15 50 H2O FIREFOX
MBK: BOOSTER 50 - BOOSTER 50 dal 2004 -> - BOOSTER 50 NEXT GENERATION - BOOSTER 50 R-ROCKET - BOOSTER 50 TRACK - FLIPPER 50 - MACH 50 G - NITRO 50 H2O - NITRO 50 H2O dal 1996-> - OVETTO 50
PGO: BIG MAX
YAMAHA: AEROX 50 H2O - AEROX 50 H2O dal 2004-> - BW'S 50 dal 2004-> - BW'S 50 NEXT GENERATION - BW'S 50 ZUMA - JOG 50 LC RR - NEO'S 50 - SLIDER 50 - SPY 50