ProX 01.2018.C Piston Kit - 2018-2026 Yamaha YZ65 65cc Size C

ProX 01.2018.C Premium CNC Machined Piston Kit

When it is time to refresh the top end of your 65cc machine, the ProX 01.2018.C 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 C kit is engineered specifically for cylinders that have seen moderate use, providing a slightly larger diameter to maintain the perfect piston-to-cylinder wall clearance on your Yamaha YZ65.

Top Features: ProX 01.2018.C 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 C Fitment: Engineered to provide a precise fit for used cylinders requiring a 43.46 mm piston.
• 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 performing a top-end rebuild on a used cylinder, using a "Size C" piston helps compensate for minor cylinder wear to restore optimal compression and performance.

Fitment List

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

Frequently Asked Questions

Q: What is the difference between Size A and Size C?
A: Size C (43.46 mm) is slightly larger than Size A. It is designed to maintain proper clearances in cylinders that have been broken in or show slight wear.

Q: Does this kit include everything needed for the piston swap?
A: Yes, the ProX kit includes the piston, high-performance rings, wrist pin, and circlips. We recommend a fresh gasket kit for installation.

Q: Is this a forged or cast piston?
A: ProX pistons are manufactured using high-quality alloys and CNC machining to deliver Factory Quality performance and durability.

Recommended Pairings

• Top End Gasket Set: Complete your Yamaha YZ65 rebuild with a leak-free seal using a fresh gasket kit.
• High-Performance 2-Stroke Oil: Protect your new piston with premium pre-mix or injector oil.

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.