APPROVAL
Unfortunately no e-passport/approval for public road traffic

The Silent Pro is the right choice for anyone looking for a very unobtrusive sports exhaust system. With the Silent Pro Black, the name says it all: a very quiet exhaust with a significant increase in top speed. Thanks to its very wide speed range, it is very easy to tune on 50cc and tame 70cc engines

, please note:
In order for the scooter to reach its full power and speed, it may be necessary to adapt the engine to the new exhaust with different variator weights and/or clutch springs, even if it is to be used on a standard engine.

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