This complete 56.5mm piston assembly is specially manufactured for HJ125 EG 125cc motorcycle engines. The full assembly contains piston, piston rings, wrist pin and circlips, all matching standard 56.5mm cylinder bore size.

It solves common engine faults of aging original pistons: piston wear, air leakage, engine power drop, excessive oil burning and loud knocking noise. Ideal for DIY engine overhaul, professional repair shops and cross-border bulk wholesale.

1. Exact Standard 56.5mm Bore Size
   Precision machining strictly follow OEM dimension for HJ125 EG. Perfect match original 56.5mm cylinder, no boring or trimming needed, easy plug-and-play installation.
2. Premium Forged Aluminum Alloy Piston
   High-strength lightweight aluminum material, excellent heat conductivity. Rapidly dissipate high temperature inside cylinder, avoid piston melting and deformation under long-time high-speed riding.
3. Complete Matching Assembly Set
   One set includes piston, compression rings, oil ring, piston pin and lock circlips. All supporting accessories are equipped, one purchase meets full engine overhaul demands.
4. Hardened Anti-Wear Surface Treatment
   Piston skirt adopts wear-resistant coating, reduce friction loss between piston and cylinder wall, lower engine noise, extend service life of cylinder and piston.
5. Good Sealing Performance
   Elastic piston rings closely fit cylinder inner wall, effectively block engine oil from burning into combustion chamber, reduce exhaust blue smoke and save fuel consumption.

1 x Complete 56.5mm Piston Assembly for HJ125 EG

We are professional manufacturer of motorcycle engine piston parts. Every piston set passes dimensional inspection and wear resistance test before shipment.

• Small sample trial orders are supported
• Large bulk orders enjoy competitive factory direct price
• Custom logo and outer packaging available for mass cooperation
• Sufficient inventory, goods shipped within 48 hours after payment

6-month quality warranty. If you receive deformed, mismatched or defective piston assemblies, we support free resending or full refund.

Contact customer service to get exclusive wholesale quotation!