Part# 1990P25. Piston Specifications: - Use a 4.500 rod.
- 565 Compression.
- Skirt Measures 2.584.5 Finish bore size 2.587.
- Weighs 93 grams.
- 3.5 to 4 Thou Piston to wall clearance.
**Measurements are done with our Micrometers** Parts List: - Piston
- 1.880 long wrist pin
- 2 spiral locks
- Complete ring Kit 2.587XM
- 2 Ring Piston.
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