What is the lift rating for this valve spring kit?

This S&S Cycle dual valve spring kit is rated for .550 inch lift. This allows for higher lift camshafts to be used, potentially improving engine performance.

What specific Harley-Davidson engines does this kit fit?

This kit is designed for 1948-1984 Harley-Davidson Big Twin engines, commonly known as Panhead and Shovelhead models. It fits a variety of specific models within that range.

Do I need any special parts for installation with thin-stem valves?

Yes, if you are using thin-stem valves, you will need to use thicker keepers that maintain correct valve stem-top collar engagement. The kit itself is designed to work with stock-style components otherwise.

S&S Cycle Dual Valve Spring Kit .550in 90-2053

Name: S&S Cycle 48-84 BT Dual Valve Spring Kit - .550in
Brand: S&S Cycle
Price: 251.57 USD
Availability: InStock

S&S Cycle 48-84 BT Dual Valve Spring Kit - .550in

$251.57

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S&S Cycle dual valve spring kit for 1948-1984 Harley-Davidson Big Twins. Features .550in lift for improved performance.

Key Features

Fits 1948-1984 Harley-Davidson Big Twin engines.
Dual valve spring design with .550in lift capability.
Includes 4 inner springs, 4 outer springs, and 4 aluminum top collars.
Compatible with thin-stem valves when using appropriate keepers.
Comes with late single bottom collars for specific S&S and stock heads.
Designed to work with stock-style bottom collars, valve guides, and valves.

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Will this fit your vehicle?

Product Details

S&S Cycle is well-known for making performance engine parts for Harley-Davidson motorcycles. This dual valve spring kit is designed for 1948-1984 Big Twin engines, like the Panhead and Shovelhead models. It's built to handle higher lift camshafts, allowing for improved airflow and power from your engine.

This kit includes four inner springs, four outer springs, and four aluminum top collars. It's compatible with thin-stem valves if you use thicker keepers that keep the valve stem-top collar properly engaged. You'll also find late single bottom collars included, which are meant for use with S&S cylinder heads on Shovelheads and stock late 1981-1985 heads. This setup works with stock-style bottom collars, valve guides, valves with stock 3/8 inch stems, and stock keepers.

This kit is a solid option for riders looking to get more out of their classic Harley-Davidson engine. It fits a range of popular models, including the Electra Glide Sport, Tour Glide, and Low Rider from the late 70s and early 80s.