Crankshaft Doppler Endurance Derbi Euro 3 / Euro 4 (after 2006)

High-quality full-circle racing crankshaft from Doppler, designed for Derbi Euro 3 and Euro 4 engines (D50B0). Ideal for both original and high-performance setups up to 18,000 rpm.

The full-circle design increases crankcase pre-compression for improved filling and higher power output. The forged connecting rod ensures excellent strength and durability, while the aluminum counterweights help reduce vibration and enhance balance.

Includes a reinforced small-end bearing (12x17x15 mm).