Wiseco PK1214 Top End Piston Kit Standard 47.50mm 2003-2007 Honda CR85R

Restore Factory Power: Wiseco PK1214 Pro-Lite Top End Kit

Lost compression and sluggish throttle response are the first signs that your 2-stroke is due for a refresh. The Wiseco PK1214 High Performance Piston Kit is the definitive OEM Replacement solution for riders who refuse to compromise on power. At Moto-House MX, we know that 2-stroke performance relies on a perfect seal, and this all-in-one kit provides everything needed to restore that crisp, high-RPM hit your Honda was built for. Engineered to withstand the rigors of the track, this kit ensures your machine stays in the hunt for the holeshot.

Forged from 4032 Aluminum Alloy, the Pro-Lite piston in this kit offers superior strength and heat resistance compared to cast alternatives. The precision-machined 47.45mm piston diameter is designed for a standard 47.50mm bore, providing the Racing Performance and lightweight durability required for high-stress motocross applications. This complete top-end package features dedicated weight-reduction windows and precision-engineered ring grooves, ensuring maximum ring seal and reduced friction for lightning-fast engine response and long-term reliability.

Top Features: Wiseco PK1214 Piston Kit

• 4032 Aluminum Forging: High-silicon alloy provides superior structural integrity and expanded life cycles over stock pistons.
• Complete Rebuild Kit: Includes the Pro-Lite piston, high-performance rings, wrist pin, circlips, and a premium top-end gasket set.
• Pro-Lite Engineering: Lightened design reduces reciprocating mass for faster revs and improved throttle sensitivity.
• Precision Ring Landings: Specifically designed for Wiseco rings to ensure optimal oil retention and compression sealing.
• 47.50mm Standard Bore: Exacting tolerances for a perfect drop-in fit on 84.7cc Honda 2-stroke powerplants.

Expert Pro-Tip

Pro-Tip: When installing your new Wiseco piston, ensure the "arrow" on the piston dome points toward the exhaust port to maintain proper ring end-gap alignment.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2003 - 2007	Honda	CR85R / CR85RB Expert

Frequently Asked Questions

Q: Can I use OEM rings with this Wiseco piston?
A: No, Wiseco pistons are specifically engineered to be fitted only with Wiseco-specific rings for proper clearance and performance.

Q: Is this piston coated?
A: The PK1214 Pro-Lite features a high-quality non-coated skirt, relying on the premium 4032 alloy for durability and thermal management.

Q: Does this kit include the small-end bearing?
A: This kit includes the piston, rings, pin, clips, and gaskets; however, the wrist pin bearing is typically sold separately and is recommended for every rebuild.

Recommended Pairings

• Wiseco Wrist Pin Bearing: Essential for a complete and reliable top-end overhaul.
• Moto Tassinari VForce3 Reed Valve: Maximize the intake efficiency of your new top-end for ultimate 2-stroke snap.

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Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida.