# Wiseco 79-99 Ski-Doo 503/521 (2373M 2835LK) Piston Kit

The Pro-Lite series is Wiseco's staple forged 2-stroke piston, offering great value for reliable all-purpose riding. These pistons are designed for both track and trail, providing refreshed performance with every ride. Pro-Lite pistons feature optimized forging for strength and extra lightning operations for enhanced throttle response. This all-purpose piston is perfect for riders seeking a balance of performance and reliability.

-   Dedicated forging design for strength-to-weight optimization
-   Extra lightening operations for enhanced throttle response
-   Engineered, forged, and machined in the USA in Mentor, OH
-   High-quality ring(s), wrist pin(s), and circlips included
-   Refreshed performance from the track to the trail
-   Designed for all-purpose 2-stroke riding
-   Great value for reliable fun factor
-   72.00 mm Bore

This Part Fits:

Year

Make

Model

Submodel

1983-1987

Ski-Doo

Alpine

Base

1988-1990,1994

Ski-Doo

Alpine II

Base

1979-1981

Ski-Doo

Blizzard 5500

Base

1981-1984

Ski-Doo

Blizzard 5500 MX

Base

1991

Ski-Doo

Cheyenne

Base

1987

Ski-Doo

Escapade

Base

1980-1983

Ski-Doo

Everest 500

Base

2001

Ski-Doo

Formula Deluxe 500

Base

1999-2001

Ski-Doo

Formula Deluxe 500 Fan

Base

1999-2000

Ski-Doo

Formula Deluxe 500 LC

Base

1996-1999

Ski-Doo

Formula SL

Base

2001-2002

Ski-Doo

MX Z 500 Fan

Base

1988

Ski-Doo

Safari 503

Base

1996-2000

Ski-Doo

Skandic 500

Base

2003

Ski-Doo

Skandic 500 Sport

Base

1997-2003

Ski-Doo

Skandic 500 SWT

Base

2001-2002

Ski-Doo

Summit 500 Fan

Base

2001

Ski-Doo

Touring 500 Fan

Base

1995-1999

Ski-Doo

Touring E

Base

1995-1999

Ski-Doo

Touring LE

Base

1995-1999

Ski-Doo

Touring SLE

Base

## Details

- **Price:** 466.99 CAD
- **Vendor:** Wiseco
- **Type:** Piston Sets - Powersports

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 466.99 CAD | In stock |

## Images

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wiseco-79-99-ski-doo-503-521-2373m-2835lk-piston-kit)
> Updated: 2026-07-14