S&S Cycle Shovelhead 80 in. 3 1/2 in. Bore Cylinder Kits 91-9024

Name: S&S Cycle Shovelhead 80 in. 3 1/2 in. Bore Cylinder Kits
Brand: S&S Cycle
SKU: SSY-91-9024
Price: 1995.95 USD
Availability: OutOfStock
Rating: 0 (0 reviews)

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Part Number: SSY-91-9024

$1,995.95

S&S Cycle Shovelhead 80 in. 3 1/2 in. Bore Cylinder Kits

66-84 BT 80in 3-1/2in Bore Cylinder and Standard Compression Piston Kit
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S&S Cycle Shovelhead 80 in. 3 1/2 in. Bore Cylinder Kits 91-9024

SSY-91-9024

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Part Number: SSY-91-9024

Estimated Ship Date: Dec 17, 2026

$1,995.95

Overview

Applications

Q&A

Estimated Ship Date: Dec 17, 2026 Would you rather pick it up?

Overview

Brand:

S&S Cycle

Manufacturer's Part Number:

91-9024

Part Type:

Powersports Top End Engine Kits

Product Line:

S&S Cycle Shovelhead 80 in. 3 1/2 in. Bore Cylinder Kits

Summit Racing Part Number:

SSY-91-9024

Cylinder Included:

Yes

Pistons Included:

Yes

Piston Material:

Forged aluminum

Piston Rings Included:

Yes

Wrist Pin Included:

Yes

Wrist Pin Bearing Included:

Head Gaskets Included:

Yes

Base Gaskets Included:

Yes

Cam Chain Tensioner Gaskets Included:

Exhaust Gaskets Included:

Valve Cover Gaskets Included:

Quantity:

Sold as a kit.

S&S Cycle Shovelhead 80 in. 3 1/2 in. Bore Cylinder Kits

S&S Cycle Shovelhead 80 in. 3 1/2 in. bore cylinder kits are premium, high-strength cast iron replacement top-end components for 1978–84 Harley-Davidson® 80 cu. in. Shovelhead engines. These kits include matched cylinders, forged pistons (standard or high compression), rings, pins, and gaskets, designed to restore performance and improve reliability without requiring machine work.

Key details:

* Engine fitment: Specifically designed for 80 in. (4 1/4 in. stroke) Shovelhead engines
* 3 1/2 in. bore: Utilizes high-tensile strength cast iron cylinders
* Kits come with forged 3 1/2 in. bore pistons, typically available in 8:1 (stock) or 9:1 (high) compression ratios
* No machining: Pistons are pre-fit to the cylinders, simplifying installation
* Included hardware: Kits typically include S&S stainless steel headbolts, base nuts, and gaskets
* Performance reliability: Replaces worn top-ends, providing superior longevity compared to stock cast pistons
* Improved cooling: S&S cylinders are designed to be durable, often reducing top-end noise
* Compatibility: Suitable for stock or S&S cylinder heads
* These kits are popular for rebuilding or upgrading 1979-84 Harley-Davidson® models with 80 in. Big Twin engines, such as FLH Electra Glide and FX Series models