Part# 12394MO8425: Specifications: - Piston measures 3.312.5. Finish bore size is 3.316
- Compression 620
- Weighs 181 grams
- 3.5 to 4 thou piston to wall clearance.
**Measurements are done with our Micrometers** Parts: - Piston
- 2.075 length wrist pin. HD
- Complete Ring Kit 8425XX
- Support Ring
- Spiral locks.
- 2 Ring Piston.
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