COUNTER SPRING, POLINI EVO-SLIDER

Contrast springs Evo-slider for Polini variators
Code: 243.094
The Polini contrast springs with EVO SLIDER designed with wear-resistant and self-lubricating material allow the Speed Drive mobile half-pulley to slip constantly. Polini has created contrast springs for the rear mobile half-pulley to adapt them to the additional load due to tuned engines that deliver more power and torque. Polini contrast springs prevent belt slippage and consequent premature wear by applying a variable additional load of 10% for Maxiscooters and 7% (White spring) or 15% (Blue spring) for 50 scooters. in any case, mount this type of springs only if strictly necessary, the best performance will in fact always be obtained using the spring which, with less load, allows optimal power transmission.
Features:
% increase: +40%
Spring load mm/Kg: 45/28
Number of turns: 6
Filament diameter: 3,8
Unloaded spring length: 106
Internal diameter: 46


APPLICATIONS OF THIS PRODUCT:
According to the data provided by the manufacturer, this article is compatible with the following brands, models and years:
BENELLI 491 50 GT, ST
BENELLI 491 50 RR, RACING, SP, SPORT
BENELLI K2 50
BENELLI K2 50 LIQUID COOLED
BENELLI NAKED 50
BENELLI PEPE 50, LX dal 2007->
BENELLI PEPE 50, LX fino al 2004
BENELLI QUATTRONOVEX 50
MBK ACTIVE 50
MBK BOOSTER 50
MBK BOOSTER 50 NEXT GENERATION
MBK BOOSTER 50 R, ROCKET
MBK BOOSTER 50 SPIRIT
MBK BOOSTER 50 TRACK
MBK BOOSTER 50 X 4T ie
MBK EQUALIS 50
MBK EVOLIS 50
MBK FIZZ 50
MBK FLIPPER 50
MBK FORTE 50
MBK HOT CHAMP 50
MBK MACH 50 G
MBK NITRO 50 4T H2O ie E2
MBK NITRO 50 H2O
MBK NITRO 50 H2O dal 1996->
MBK OVETTO 50
MBK OVETTO 50 4T ie
MBK SORRISO 50
MBK SORRISO 50 96
MBK STUNT 50
MBK TARGET 50
Y.A.M.A.H.A. AEROX 50 2T H2O
Y.A.M.A.H.A. AEROX 50 2T H2O da