![BMW/Toyota B58 Sleeved Engine Block Modification](http://williamsperformance.co.uk/cdn/shop/products/received_1332491070515164_934x700.jpg?v=1643558112)
B58 engine block fitted with our custom made ductile iron sleeves.
These will be machined/bored/honed to suit your pistons, meaning you can also run an oversize piston.
Using the latest CNC honing technology guarantees perfectly straight and parallel cylinder bores.