Tunnel cover -PREMIUM- Vespa 125 VNA TS/ 150 VBA-T4/ SS Sprint/Rally

Tunnel cover -PREMIUM- installed as part of the Largeframe Oldies. For Vespa 125 VNA TS/ 150 VBA-T4/ SS Sprint and Rally. NOTE: The cover should always be fitted. Otherwise, the engine may no longer respond to the throttle properly after full load phases. If the engine chokes despite meticulous tuning work on the carburettor, this simple plastic part is very often the cause. A simple test is to close the frame tunnel behind the fork (under the cascade) using a cloth flap. This saves you having to remove the fuel tank to check.