torque spring Malossi MHR white reinforced +30% for Piaggio M.298360.W0 fitting for Derbi Atlantis 50 ATL0EB 2001, 5 PS, 3,7 kw

Malossi strengthened counterpressure springs for rear Malossi convertors, Piaggio Type. Counterpressure springs place the drive belt under tension, preventing slippage, for increased drive. Ideal for tuned engines with slipping belts. Straight swap for the original. 30% stiffer then OEM spring.