# S&S Cycle 1986+ XL Forged 1250cc Conversion Pistons

These S&S 1250cc conversion pistons for 1986-'21 HD® Sportster® Models increase the displacement of 883cc and 1200cc engines to 1250cc at 10.3:1 compression. May be used with stock 1200cc cylinder heads, but S&S CNC ported heads are recommended. Stock 1200cc cylinders and 1986-'2003 883cc cylinders may be bored to accept the 3-9/16" bore 1250cc pistons, but 2004-'16 883cc cylinders may not be used. Also available in a cylinder and piston kit.

This Part Fits:

Year

Make

Model

Submodel

2015-2016

Harley-Davidson

XL1200C Sportster 1200 Custom

Base

2011

Harley-Davidson

XL1200N Sportster 1200 Nightster

Base

2015-2016

Harley-Davidson

XL1200T SuperLow 1200T

Base

2004-2008

Harley-Davidson

XL883 Sportster

Base

2015-2016

Harley-Davidson

XL883N Iron 883

Base

1986-1987

Harley-Davidson

XLH1100

Base

1988-1990

Harley-Davidson

XLH1200

Base

1986-1990

Harley-Davidson

XLH883

Base

## Details

- **Price:** 710.02 CAD
- **Vendor:** S&S Cycle
- **Type:** Piston Sets - Powersports

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 710.02 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-1986-xl-forged-1250cc-conversion-pistons)
> Updated: 2026-07-13