Supertech BMW B58 82.5mm Bore 36cc 11:1 CR Pistons - Set of 6 (Excl Rings)

This is a set of six Supertech forged pistons designed for the BMW B58 engine. These pistons feature an 82.5mm bore and a 36cc dish volume, resulting in an 11:1 compression ratio. They are a direct replacement for the factory pistons, intended for builds where increased compression is desired for improved performance. The set includes the pistons only; rings are sold separately.

Crafted from high-strength forged aluminum, these pistons are built to withstand the increased cylinder pressures and temperatures associated with higher compression ratios and performance tuning. The 82.5mm bore is a standard size for many B58 engine rebuilds, and the 11:1 compression ratio offers a notable bump over stock, making them suitable for naturally aspirated or boosted applications looking for more power. Proper engine assembly and tuning are critical when installing higher compression pistons to ensure reliability and optimal performance.

When rebuilding your B58 engine with these pistons, it's important to ensure all supporting components are in good condition. This includes checking the connecting rods for straightness and ensuring the crankshaft is properly balanced. You will also need to source a compatible set of piston rings, as they are not included with this set. Always refer to the manufacturer's detailed installation instructions for precise specifications and procedures.