# S&S Cycle 84-99 BT LSF 3-5/8in Piston Set - .020in

These forged pistons are designed as an intermediate compression piston for engines with S&S Super Stock cylinder heads. These pistons can be used to increase the compression of S&S Sidewinder kits for HD Evolution engines and in S&S engines with Super Stock cylinder heads. They are designed to be used in 4-1/4", 4-1/2", and 4-5/8" stroke engines with stock (8-1/2") diameter flywheels, and in 3-13/16" and 4-3/4" stroke engines with small (8-1/4") diameter flywheels. 3-5/8" bore. Made from high strength low silicon forging for racing applications. Small Diameter Flywheels. Piston kits include set of pistons, rings, wristpins, and clips.

## Details

- **Price:** 700.43 CAD
- **Vendor:** S&S Cycle
- **Type:** Piston Sets - Powersports

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 700.43 CAD | In stock |

## Images

- User 1

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-84-99-bt-lsf-3-5-8in-piston-set-020in)
> Updated: 2026-08-15