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Easy side entry system
Comes with cooling fins for heat dissipation
5 brightness levels
1989 Yamaha PW 50
primary / secondary springs
CAST PISTONS EVO 80CI 10.5:1 .005 156-1223 Easy side entry systemKB Hypereutectic alloy pistons are cast with a 16% high silicon content that has very high thermal barrier properties along with a low thermal expansion rate, allowing tight piston to cylinder wall clearances. This makes them ideal for air cooled engines, offering optimal ring seal, quieter engine running and reduced wear. Hypereutectics are best suited for stock or mild compression ratios up to 10. 5: 1 running on pump fuel.
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