Millennium

Millennium is known for manufacturing advanced big bore engine components that help riders and builders unlock additional displacement, power and reliability. Their M-Spec big bore cylinders and cylinder kits are precision-machined and engineered for optimal heat transfer, wear resistance and long-term performance. Designed for popular Polaris platforms, Millennium cylinder solutions support performance rebuilds where accuracy and durability are critical. These components are ideal for riders looking to increase torque and horsepower without compromising engine integrity.

Complementing their cylinder offerings, Millennium produces performance piston kits that are specifically matched to big bore applications. These pistons are designed to maintain correct clearances, compression characteristics and smooth operation under high-load conditions. When paired with Millennium big bore cylinders, the piston kits create a balanced engine package that improves throttle response and overall power delivery. This combination makes Millennium a strong option for enthusiasts rebuilding worn engines or pursuing performance-focused upgrades.

Millennium also offers engine gasket kits designed to ensure proper sealing and long-term reliability after engine work. Their gasket solutions support precise installation and help prevent leaks in high-performance applications. With a strong reputation in the powersports industry for quality machining and performance-focused engineering, Millennium engine components remain a preferred choice for riders seeking dependable big bore kits, cylinders, pistons and gaskets for demanding off-road and utility environments.