Big Bore Kits

Parts that have to fit your bike

With parts, fitment matters more than price. Always check year and variant, because manufacturers move mounting points within the same model name. On rebuild parts such as pistons and gasket sets, sizing counts too: an oversize piston needs a machined cylinder. If in doubt, send us your brand, model, year and frame or engine number.

• Check model year and variant
• Match piston size to the cylinder
• Frame or engine number when unsure

Brands in Big Bore Kits

You will find products from Athena here.