For many many years an 87mm piston has been one of the easiest engine mods someone can do. These are what is often referred to as 'slip ins', what that means is with a standard 1300, 1500 and 1600 type 1 and 2 engine cases no machining is required and a nice little cc boost is added. These pistons when used with a standard 69mm crankshaft will give you 1641cc.
These are cast pistons, offering a more cost effective solution to forged pistons. They come as a set with everything you need, barrels, pistons, piston rings, Gudgeon pins and clips
Please note that if you are running a 1300 and have 1300 heads then they will require machining or some 1600 heads fitting.
