| Part# 12747MO8941. Specifications: - Piston measures 3.517.5 Finish bore is 3.520
- Compression 620
- Weighs 222 grams.
- 2.5 to 3 thou Piston to wall clearance.
**Measurements are done with our Micrometers** Parts: - Piston
- HD 2.075 Long wrist pin
- 2 spiral locks
- Complete Ring Kit 3.524XC
- Support Ring. 3560-142
- 2 Ring Piston
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