- Data Sheet
- Suitable for (25)
DetailsRacing variator "Hi-Speed" by Polini.
It comes with 16x13mm roller weights and a reinforced torque spring. Basically the improved successor of Polini's famous "Speed Control".
As it was developed to be used with the original torque drive, it has a "small" outside diameter and has to be used with a standard (preferably reinforced) drive belt. The angles of mobile pulley and ramp plate were designed to improve acceleration.
Best used with a sports exhaust, 50cc sports to mid-race configuration.
Name Polini Variator "Hi-Speed" Yamaha BW's / Slider Item No. U241.671 Brand Polini Range Standard
Your product goes with the following manufacturers and their models:
Amico 50cc AC (1991 - 1992)
Amico 50cc ac (after 1993)
Amico GL 50cc AC
Amico Sport 50cc AC
SR 50cc AC (before 1994) - Minarelli vertical
Booster 50cc AC (1992 - 1999)
Booster 50cc AC (after 2004)
Booster Next 50cc AC (after 1999)
Booster Next 50cc AC (before 1999)
Booster One 50cc until 2013
Booster Rocket 50cc AC
Booster Spirit 50cc AC (before 2004)
Booster Track 50cc AC
Stunt 50cc AC
Stunt 50cc AC CAT (after 2004)
Stunt Naked 50cc AC
BW's 50cc AC
BW's 50cc AC (after 2004)
BW's Bump 50cc AC
BW's Easy 50cc 2013
BW's NG 50cc AC (after 1999)
BW's NG 50cc AC (before 1999)
BW's Spy 50cc AC
Slider 50cc AC (before 2004)
Slider 50cc AC CAT (after 2004)