We are currently open for business and trading normally!

Performance Options

If you want to keep the stock displacement of your engine then we have four performance package types available…

Head Only


– Performance

MAX Performance


If you want to increase the displacement of your engine then we can do that to…

Budget Big Bore Kits

Big Bore/Stroker Builds


Check out our Mods Explained page for a detailed description of each individual mod or service we offer.

Please note that engine capacity makes very little difference to price as the same processes are involved in modifying an 80cc engine or a 500cc engine.



2005 Honda CR250 converted to a Big Bore/Long Rod/Stroker CR285… this thing is a beast!