crankshaft Doppler ER1 for Honda Wallaroo PK50 50cc 2-stroke AC 52448

The Doppler ER1 racing crankshaft is forged and balanced with aluminium inserts that reduce dead volume in the lower part of the engine while ensuring maximum balance and good moment of inertia. The forged connecting rod is heat treated and mounted with a nickel-chromium-silver bearing with INA needle cage for high engine speeds.

Right-hand thread for ignition!

Gudgeon pin: 12mm

Stroke: 76mm

Connecting rod: 76mm

20mm crankshaft stub