Variator Pulley (mobile) Doppler ER3 Peugeot 103 SPX / RCX

Movable pulley variator Doppler ER3 Peugeot 103 SPX / RCX.

Doppler is a renowned French brand specialized in racing and tuning parts for 50cc bikes.

Small parts and accessories also need to be checked regularly and renewed if necessary.

Oversize variator kits (variator, converter and longer V-belt) have a larger conversion range and are designed for higher loads and more power as well as higher speeds. Thus, the higher power is transmitted better, especially with narrow speed bands of tuned engines. Note: When using an overrange kit, the e-starter can no longer be used! With Minarelli also the engine housing must be processed a little.