Supertech BMW B58 82mm Bore 36cc 10.2:1 CR 2618 Pistons - Set of 6 (Excl Rings)

This set includes six Supertech forged pistons specifically made for the BMW B58 engine. Each piston features an 82mm bore and a 36cc dish volume, resulting in a 10.2:1 compression ratio. These pistons are constructed from 2618 aluminum, a strong alloy commonly used in high-performance applications for its durability and ability to withstand high temperatures and pressures. This set does not include piston rings, so you'll need to source those separately.

Choosing forged pistons like these is a significant upgrade for your B58 engine, especially if you're planning on increasing boost pressure or making more power. The 2618 aluminum construction offers a substantial improvement in strength and resistance to detonation compared to cast pistons. The 82mm bore is the standard size for the B58, meaning these are a direct replacement for your stock pistons, assuming you are rebuilding the engine. The 10.2:1 compression ratio is a popular choice for enthusiasts looking for a balance between power and drivability, suitable for many forced induction setups.

When installing these pistons, remember that they are designed for a specific bore size and require proper clearance. It's always recommended to consult your engine's service manual or a professional mechanic for precise installation procedures, including ring gap settings and bearing clearances. Ensure you have all the necessary supporting components, such as new rod bearings and the correct piston rings, before beginning your engine build.