# S&S Cycle 66-84 BT 3-31/32in Stroke 3-7/16in Bore 8.0 To 1 Compression Cylinder Kit - Gloss Black

This kit is intended to replace the cylinders and pistons of a 74" shovelhead engine and keep the stock compression ratio of 8:1. Compatible with stock or S&S cylinder heads. Kit includes S&S 3-7/16" bore high tensile cast iron cylinders, 3-7/16" bore forged standard compression pistons for 74" (3-31/32" stroke) engines with rings and wristpins, head gaskets, S&S stainless steel head bolts with washers, base nuts, base gaskets.

This Part Fits:

Year

Make

Model

Submodel

1970-1978

Harley-Davidson

FLH Electra Glide

Base

1971-1978

Harley-Davidson

FX Super Glide

Base

## Details

- **Price:** 2851.64 CAD
- **Vendor:** S&S Cycle
- **Type:** Piston Sets - Powersports

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2851.64 CAD | In stock |

## Images

- User 1

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-66-84-bt-3-31-32in-stroke-3-7-16in-bore-8-0-to-1-compression-cylinder-kit-gloss-black)
> Updated: 2026-07-13