Cap Set. These are compatible with the O.S. Speed R2101 and 21XZ-B V2 engines. Package includes 14mm, 16mm and 18mm caps, as well as two 3mm caps. This product was added to ...
nbsp; These shims go between the head button and the top of the cylinder sleeve and can be used to adjust and fine tune the compression (deck height) of the engine. In general ...