|   Part# 12747MO8915.  Specifications:   - Piston measures 3.507.5 Finish bore is 3.510
  - Compression 620
  - Weighs 220 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 3.514XC
  - Support Ring. 3560-142
  - 2 Ring Piston
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