What does the 1.625 to 1 ratio mean for my engine?

The 1.625 to 1 ratio means that for every movement of the camshaft lobe, the rocker arm multiplies that movement by 1.625. This results in greater valve lift, which can improve airflow into and out of the engine cylinders, potentially leading to better performance.

Why is metered oiling important for rocker arms?

Metered oiling ensures that a controlled amount of oil is delivered to the rocker arms and valve train. This is essential for proper lubrication and cooling, especially when the engine is working harder or experiencing increased stress from higher lift components, helping to reduce wear.

Can I ship this part to California?

No, this rocker arm assembly is not CARB approved and cannot be shipped to California.

Specifications

Brand: S&S Cycle
Part #: 900-4065FA
UPC: 900-4065FA

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

Name: S&S Cycle 1984+ BT 1.625 To 1 Ration Rocker Arm Assembly w/ Metered Oiling
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-1984-bt-1-625-to-1-ration-rocker-arm-assembly-w-metered-oili-t14-664531
Price: 193.97 USD
Availability: BackOrder

$193.97

On Backorder

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S&S Cycle 1984+ Big Twin rocker arm assembly with metered oiling. Improves valve lift for better engine performance.

Key Features

Fits 1984 and later Harley-Davidson Big Twin models.
Features a 1.625 to 1 ratio for increased valve lift.
Includes metered oiling for improved lubrication and cooling of valve train components.
Helps to enhance engine performance through better airflow.

This rocker arm assembly is designed for 1984 and later Harley-Davidson Big Twin models. It cannot be shipped to California due to CARB regulations.

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About this part

Product Details

If you're looking to get more out of your 1984 and later Harley-Davidson Big Twin engine, upgrading the rocker arms is a solid move. This assembly from S&S Cycle features a 1.625 to 1 ratio, which means the rocker arm multiplies the camshaft's lift by that factor, resulting in more valve lift. More valve lift generally means better airflow into and out of the cylinders, which can lead to improved engine performance.

What sets this S&S Cycle rocker arm assembly apart is its metered oiling feature. This design ensures that oil is precisely delivered to the rocker arms and valve train components, which is crucial for lubrication and cooling, especially under increased stress from higher lift. This helps to reduce wear and maintain consistent performance over time. The assembly is built to fit 1984 and later Big Twin models, making it a direct upgrade for many Harley-Davidson motorcycles.