Doppler Exhaust Doppler "ER1" MBK 51

The expansion chamber is made of sheet metal (rolled and welded) and coated, the silencer is made of chrome-plated aluminium (absorption-type). This well-designed exhaust will yield a considerable increase in power, especially at mid and high rpm range.

Though street-legal, this exhaust is very powerful and can easily be combined with original or 50cc/70cc sports and racing kits.