PROX Piston Kit XL125S / CG125 -437- (01.1176.000) — 56.50mm Standard Bore

The PROX Piston Kit XL125S / CG125 -437- delivers OEM-quality replacement performance for Honda XL125S and CG125 engines. Manufactured to ProX exact specifications by reputable Original Equipment Manufacturers in Japan, this kit is built for durability and precise, factory-fit operation.

Designed for complete rebuilds, it includes every component needed for proper installation and reliable long-term function: a precision-machined piston, piston rings, wrist pin, and circlips. The bore is standard at 56.50 mm, aligning with OEM dimensions for straightforward mounting on the targeted models.

• Piston size: 56.50 mm standard bore (01.1176.000)
• Compatibility: Honda XL125S and CG125 (4-stroke) models
• Contents: piston, piston rings, wrist pin, circlips
• Construction: high-quality piston engineered for durability and consistent power
• Use case: ideal for engine rebuilds, repairs, and restoration projects

With OEM-compatible fitting and precise compression characteristics, this ProX kit supports dependable performance for daily riding or vintage-bike restoration. It’s a practical choice for riders seeking a reliable, ready-to-install solution that preserves original engine feel and longevity.

Excellent economic alternative when you are looking for an OEM quality replacement piston

Mainly manufactured in Japan by reputable Original Equipment Manufacturers to ProX exact specifications and high quality standards

Sleeved cylinder piston kits are available in standard size and a Wide range of oversizes

Plated cylinder piston kits come in standard size, as well as in A, B, C and D oversizes if available

ProX leads the industry in cast and forged pistons made specifically to replace OEM parts

Comes complete with pistons, piston rings, wrist pin and circlips

The PROX Piston Kit XL125S / CG125 -437- is designed to deliver reliable performance and durability for your motorcycle engine. This comprehensive kit includes all necessary components to ensure proper fit and function, making it an ideal choice for engine rebuilds and repairs. Constructed with high-quality materials, the piston is engineered to withstand the rigors of everyday riding and demanding conditions.
Features include a precision-machined piston that offers optimal compression and power output. The kit is designed for easy installation, with components that match OEM specifications to ensure compatibility and longevity. Whether you're restoring a vintage model or maintaining a daily rider, this piston kit provides the performance and reliability you need.
Each kit is carefully assembled to meet strict quality standards, providing peace of mind and confidence in your repair or upgrade. Designed for use with XL125S and CG125 models, this piston kit ensures a seamless fit and efficient operation, extending engine life and enhancing overall performance.

Features:

• High-quality piston designed for durability and reliable performance

• Includes all necessary components for a complete rebuild

• Precision-machined for optimal compression and power

• OEM-compatible parts for easy installation and perfect fit

• Suitable for XL125S and CG125 motorcycle models