crankshaft Doppler ER1 for Peugeot 103 SPX, RCX 2-stroke AC

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

Conrod: 76mm

Right-hand side crankshaft stub: 17mm, for 6203 ball bearing

Left-hand side crankshaft stub: 20mm, for 6204 ball bearing