Description
The WSM Piston Assembly 50-520-5-665 delivers the precision engineering required for high-revving, forced-induction applications where heat management and durability directly impact performance. German-engineered and optimized for long-rod configurations, this piston assembly maintains critical clearances across a wide bore range while the MOS2 coating ensures superior lubricity and thermal dissipation. Whether you’re building a competition engine or upgrading a high-performance platform, this assembly eliminates guesswork and delivers repeatable results.
- MOS2 coated surface
- Heat absorption optimized
- Ported for WSM sleeves
- Bore range: 64–70.5mm
- 5mm elevated piston pin
- Long rod compatible
- German-manufactured precision
- MPN: 50-520-5-665





