S&S Cycle 1984+ BT 1.625 To 1 Ration Rocker Arm Assembly w/ Metered Oiling

This is the S&S Cycle Rocker Arm Assembly designed for 1984 and newer Big Twin Harley-Davidson motorcycles. It features a 1.625 to 1 ratio, which means the valve lift will be 1.625 times the lift of the camshaft lobe. This updated ratio can help improve engine performance by allowing more air and fuel into the cylinder and more exhaust out. The assembly also includes metered oiling, which ensures precise lubrication to the rocker arms and valve train components, helping to reduce wear and extend the life of the parts.

The rocker arms themselves are well-built to handle the increased stress from the higher ratio. Metered oiling is a notable feature that directs oil flow specifically where it's needed most in the rocker box, preventing excessive oiling that can lead to power loss or insufficient oiling that causes premature wear. This attention to detail in the design helps maintain consistent engine operation and reliability, especially when you're pushing your Big Twin.

When installing these, you'll want to ensure your existing rocker boxes are clean and ready. This assembly is a direct replacement for your stock rocker arms, making the installation straightforward for someone familiar with Harley-Davidson engine work. It's a solid option for riders looking to get a bit more out of their engine's breathing capabilities.