They are more usually seen (or heard) fitted to big capacity cruisers such as Harley-Davidsons and Indians, but exhaust manufacturer Dr Jekill and Mr Hyde has now brought out its first scooter system, designed to make Vespa GTV and GTS 300/310 models rumble. 
The Forte exhaust has the firm’s signature electronic adjustable valve technology, which allows riders to switch between three modes using a bar-mounted button: Jekill mode is quiet and refined, Hyde mode is deep and resonant, Dynamic mode is somewhere between the two. The system is fully street legal, with ECE, TüV and CARB certification, thanks to the inclusion of a Smartbox which reads signals from the scooter’s CANbus and adjusts the valve to comply with legislation. Two versions are available, for scooters from 2021 to 2024, and 2025-onwards, both at an SRP of €1504.
The Jekill and Hyde Company; +31 (0)77 3081070;Â [email protected]