What is the purpose of a rocker arm shaft?

The rocker arm shaft holds the rocker arms in place within the cylinder head. It allows the rocker arms to pivot, transferring the motion from the pushrods to the valves, which is essential for the engine's breathing cycle.

What does 'Big Twin' refer to in this context?

'Big Twin' is a common term used to describe Harley-Davidson's larger displacement V-twin motorcycle engines. This shaft is specifically made for those models produced between 1966 and 1984.

Does this rocker arm shaft come with any hardware?

This product listing is for the rocker arm shaft itself. It does not include any additional hardware, such as rocker arm bushings or retaining clips, which would need to be sourced separately if required.

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Est. 1957

Specifications

Brand: S&S Cycle
Part #: 90-4351
UPC: 90-4351

S&S Cycle 66-84 BT Rocker Arm Shaft

Name: S&S Cycle 66-84 BT Rocker Arm Shaft
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-66-84-bt-rocker-arm-shaft-t14-664642
Price: 124.24 USD
Availability: BackOrder

$124.24

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits 1966-1984 Big Twin motorcycles.
Rocker arm shaft from S&S Cycle.
Direct replacement part for the engine's valvetrain.

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About this part

Product Details

This is the S&S Cycle Rocker Arm Shaft for 1966-1984 Big Twin motorcycles. It's a direct replacement part designed to keep your engine's valvetrain operating smoothly.

When you're rebuilding the top end of your Big Twin or just replacing worn components, a solid rocker arm shaft is crucial. This shaft from S&S Cycle is built to handle the demands of your engine, ensuring consistent rocker arm movement. It's a well-made piece that fits right into the stock location, making installation straightforward for anyone familiar with Harley-Davidson engine work.