Polaris RZR XP 900 Piston Set - Wiseco - Forged 12.51 CR - 11-14. This Wiseco Forged Series piston kit is built for the Polaris RZR XP 900 (model years 2011–2014) and provides a complete replacement piston set with a 95.00 mm bore and a 12.5:1 compression ratio.

Designed from forged aluminum for improved strength and longevity, this piston set is intended for riders who want a reliable OEM-replacement or a foundation for engine tuning. Each kit ships complete with wrist pin, rings, and circlips so you have everything required for installation. The forged construction offers better resistance to fatigue and thermal stress compared with cast pistons, making it suitable for sustained off-road use and higher-load conditions while maintaining proper fit for the RZR XP 900's 95.00 mm bore.

Features

• Fits Polaris RZR XP 900 (2011–2014) — 95.00 mm bore
• Wiseco Forged aluminum construction for durability
• 12.5:1 compression ratio (12.51 CR listed)
• Complete kit includes piston(s), wrist pin(s), rings, and circlips
• Intended for 4-stroke applications and a range of performance needs

If you have questions or want help confirming fitment or choosing related parts, call us directly — 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

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