Polaris Predator Piston Set - Wiseco - Forged 12.5:1 CR - 03-07 is a direct-fit forged piston kit engineered for the Polaris 500 Predator model years 2003–2007. This Wiseco kit provides a complete set of components intended for replacement or performance-minded rebuilds.

Built from Wiseco’s forged aluminum, this piston kit is featured with a 12.5:1 compression ratio and a 104.83 mm bore (part number 4127GFX). The design focuses on strength and longevity under the higher stresses of street, trail, and utility use. Each kit ships complete with the piston, wrist pin, rings, and circlips so you have the necessary parts for a proper installation. These pistons are suitable for riders who want a durable, serviceable option that supports higher-compression setups while maintaining correct fitment for the Predator 500 platform.

Features

• Forged aluminum piston for improved durability and fatigue resistance
• 12.5:1 compression ratio matched to specified rebuilds
• 104.83 mm bore — Wiseco part 4127GFX
• Complete kit: piston, wrist pin, rings, and circlips included
• Direct fit for Polaris Predator 500 (2003–2007)
• Designed to balance service life and performance for ATVs/UTVs

If you have questions about fitment, installation, or choosing parts for a specific build, call us directly — we’re happy to help. We have two service locations in Austin, Texas and the Los Angeles, California area where we offer installation and customization services. Call: 512-982-9393 (TX) or 562-981-6800 (CA). If you’re considering purchasing multiple items, contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov