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Piston Pin Retaining Circlip for CSC TT250 SG250

Original replacement component for CSC TT250 and SG250. This part is identified by CSC ZT63-101 and Zongshen manufacturer code 100100587.

What This Part Does and Why You Might Need It

This retainer holds the wrist pin axially inside the piston. Reusing a deformed retaining ring risks internal engine damage; fit a correct new retainer fully in the groove during piston service.

OEM Identification and Specifications

  • CSC SKU: ZT63-101
  • Zongshen manufacturer reference (2026 stock export): 100100587
  • Product type: Piston wrist-pin retaining ring
  • Position: Piston pin groove in piston
  • Zongshen 100100587 piston-pin check/retaining ring; one clip sold; diameter/groove measurement not provided

Fitment and Important Ordering Details

Cataloged CSC applications: TT250 and SG250. This is one individually sold component, unless the description explicitly identifies a multi-piece assembly. Match the original part number, shape and dimension before ordering. Similar CG125/CG200/CG250 parts can vary by design and production revision; no unverified model compatibility is claimed.

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