- Stock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution engines
- Does not include carb or ignition; use stock or aftermarket carburetor and air cleaner
- 508 cam
- Forged rocker arms
- 585 valve springs
- Flat top cast pistons
- S&S standard oil pump
- S&S performance replacement heads
- 3-1/2" bore x 4-1/4" stroke
- 8.4:1 compression ratio
- Wrinkle black finish
- Fits 1984-1999 Harley Davidson® big twin chassis and custom frames designed for Evolution® big twin engines