COUNTER SPRING, POLINI

Polini contrast springs for variator
Code: 243.071
Polini has created contrast springs for the rear mobile half-pulley to adapt them to the additional load due to elaborate 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. This kit consists of 2 springs
Features:
% increase: +15%
Spring load mm/Kg: 60/40
Number of turns: 5
Filament diameter: 5
Unloaded spring length: 115
Internal diameter: 56


APPLICATIONS OF THIS PRODUCT:
According to the data provided by the manufacturer, this article is compatible with the following brands, models and years:
MBK EVOLIS 250 4T ie dal 2014
MBK >
MBK KILIBRE 300
MBK SKYCRUISER 250
MBK SKYLINER 250
ITALJET JUPITER 250
R.E.N.A.U.L.T. KOURANOS 250
APRILIA LEONARDO 250
APRILIA LEONARDO 300
MALAGUTI MADISON 250
MALAGUTI PASSWORD 250
Y.A.M.A.H.A. MAJESTY 250 dal 2000->
Y.A.M.A.H.A. MAJESTY 250 mod.1999
Y.A.M.A.H.A. VERSITY 300
Y.A.M.A.H.A. X CITY 250
Y.A.M.A.H.A. X MAX 250
Y.A.M.A.H.A. X MAX 250i
Y.A.M.A.H.A. XC 300
BENELLI VELVET 250 (Y.A.M.A.H.A.)