CP Pistons M8 124 11:1

With a bore size of 4.250 inches and a 4.375-inch stroke, these CP Pistons are built for the M8 124 engine platform. They are designed to achieve an 11:1 compression ratio, which is a notable increase over stock, offering a good balance for performance builds without requiring extreme octane fuel. The dome volume is -4.0 cubic centimeters, and the dome height is 1.143 inches, contributing to the overall compression figure.

These pistons are constructed from durable materials suitable for the demands of a performance engine. The 11:1 compression ratio is a popular choice for riders looking for a significant power increase from their Harley-Davidson M8 engine. This setup is well-suited for a range of Harley-Davidson models, including the FLFBS Fat Boy 114, FLHCS Heritage Classic 114, and FLTRX Road Glide, among others. They are designed to fit right into the M8 engine platform, making them a solid option for engine rebuilds or performance upgrades.

When installing these pistons, it's important to follow the manufacturer's recommended procedures to ensure proper fitment and performance. While these pistons offer an improved compression ratio, always consult with a qualified mechanic or refer to the specific service manual for your Harley-Davidson model to confirm all necessary components and procedures for your build.