Pistons & Rings

At Moonshine Horsepower, our Pistons & Rings category delivers the highest-quality internals for big-bore Milwaukee-Eight engines that demand maximum displacement, compression, and reliability. Whether you're upgrading a stock 107/114/117/121ci motor to 128–150ci territory, chasing 200+ HP, or building a no-compromise race setup, these components are battle-tested in our shop builds and proven on the dyno and street. We feature forged pistons from top names like CP Carrillo, custom Moonshine Horsepower designs, and premium ring sets (including Total Seal gas-ported options) engineered for superior sealing, reduced friction, and extreme durability under high lift and boost-like abuse.