# S&S Cycle 66-84 BT 93in High Compression 3-5/8in Big Bore Cylinder & Piston Kit - Gloss Black

This 3-5/8" big bore kit may be used to replace the cylinders and pistons of an S&S SH93 high compression engine or a stock HD® shovelhead engine that has been upgraded with an S&S 93" Hot Set Up Kit® . This kit may also be used to upgrade an engine with an S&S 84" stock bore stroker kit to 93". Stock crankcases must be bored to accomodate the 3-5/8" bore cylinders, but the 4-1/2" stroker flywheel assembly does not need to be rebalanced. The kit includes S&S 3-5/8" bore cylinders, 3-5/8" bore forged pistons with rings and wristpins, head gaskets, base gaskets, exhaust gaskets, and instructions. Compression is 9.1:1. The cylinders are longer then stock , so longer pushrods, and manifold must be used.

This Part Fits:

Year

Make

Model

Submodel

1970-1984

Harley-Davidson

FLH Electra Glide

Base

1980-1984

Harley-Davidson

FLHS Electra Glide Sport

Base

1984

Harley-Davidson

FLHX Electra Glide Special

Base

1980-1983

Harley-Davidson

FLT Tour Glide

Base

1981

Harley-Davidson

FLTC Tour Glide Classic

Base

1971-1978

Harley-Davidson

FX Super Glide

Base

1982-1983

Harley-Davidson

FXR Super Glide II

Base

## Details

- **Price:** 2779.83 CAD
- **Vendor:** S&S Cycle
- **Type:** Piston Sets - Powersports

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2779.83 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-93in-high-compression-3-5-8in-big-bore-cylinder-piston-kit-gloss-black)
> Updated: 2026-07-01