ProX 01.2018.A Piston Kit - 2018-2026 Yamaha YZ65 65cc 2-Stroke

ProX 01.2018.A Premium CNC Machined Piston Kit

When it is time to refresh the top end of your 65cc machine, the ProX 01.2018.A Piston Kit provides the reliability and precision your young racer needs to stay competitive. These pistons are precision machined on state-of-the-art CNC equipment to ensure tight tolerances and consistent power delivery. For riders who demand Factory Quality components for their 2-stroke engines, Moto-House MX delivers the parts that keep bikes running at peak performance.

This kit is manufactured using high-quality aluminum alloys that meet or exceed original equipment standards. By focusing on maintained strength and optimized weight, ProX pistons offer excellent durability and thermal management under racing conditions. This Standard Size A kit is a direct replacement, providing the perfect fit for your cylinder wall clearances and ensuring your Yamaha YZ65 stays on the track and out of the pits.

Top Features: ProX 01.2018.A Piston Kit

• CNC Precision Machining: Manufactured on advanced equipment for exact tolerances and fitment.
• High-Grade Aluminum Alloy: Durable construction designed to withstand high-revving 2-stroke operation.
• Standard Size A Fitment: Engineered to follow specific manufacturer piston-to-cylinder wall clearances.
• Factory Quality Reliability: A trusted aftermarket solution that meets rigorous performance standards.
• Complete Kit: Includes the piston, ring kit, wrist pin, and circlips for a hassle-free rebuild.

Expert Pro-Tip: When installing a new 2-stroke piston, always lubricate the wrist pin and small-end bearing with high-quality 2-cycle oil to prevent dry-start wear.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2018-2026	Yamaha	YZ65

Frequently Asked Questions

Q: Is this a Standard Size or Oversize piston?
A: This is a Standard Size A (43.44 mm) piston, designed for the stock 44.50 mm bore.

Q: Does this kit include the rings and clips?
A: Yes, the ProX kit is a complete package including the piston, ring kit, wrist pin, and circlips.

Q: Can this be used for racing?
A: Absolutely. ProX pistons are a staple in the motocross industry for both recreational riding and competitive racing.

Recommended Pairings

• Top End Gasket Set: Ensure a perfect seal for your Yamaha YZ65 rebuild with a fresh gasket kit.
• Yamalube 2-S Engine Oil: Keep your new piston protected with the best lubrication for small-bore 2-strokes.

Restore your machine's performance today. Buy now at Moto-House MX!

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida. Stop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.