M4 Minimoto Leak Pressure Test Kit Brake Disc This is the round restrictor

This is the round restrictor waher that sits ontop of the cylinder insert on the Junior RM range of engines

whose colours

String and Handle for Reverse pullstart

Quality padding

Piston Kit for the aircooled RM9-RM14 engines and the R40

M4 Minimoto Leak Pressure Test Kit Brake Disc This is the round restrictorThis kit is designed to test for air leaks in an engine. The gauge clamps into the inlet manifold and then the plate screws to the exhaust flange of the cylinder. Using a bicycle pump fill to around 6psi and remove pump and fingers crossed the gauge doesn't move or at least only very slowly. The plate is made to fit Polini, CS, GHR, BZM, Blata, and comes with screws and a couple of spare O Rings