With this cylinder, you restore the compression and power of your engine block.
The cylinder wall, together with the piston and piston rings, determines the compression. If the wall is scratched or worn into an oval shape, replacement is the best solution.
This part is suitable for the Aprilia (with a bore of 40.0mm, water-cooled).
Check that the bore and tap distance match your engine block, and always install with a new gasket set.
