SPEEDFIGHT I/TREKKER/BUXY/VIVACITY (ref: 263928)

The DOPPLER crankshaft is made of forged solid mass, corrected with an aluminium balancing tap, which reduces dead volumes at bottom-engine while ensuring maximum balancing and good momentum. It is equipped with a heat-treated forged connecting rod and an INA needle cage, chromed nickel silver treated for high engine speeds.