The Kieth Black 390 hyper-eutectic 3.5-bore piston set has an 8.3:1 compression ratio and is oversize .020. Piston set alloy is cast in a permanent steel mold and includes rings. **Note: Run the engine at moderate speeds for at least 500 miles avoiding excessive running in lower gears to break in new pistons and rings properly.
FITMENT
- 1978 / 1984 FL
- 1978 / 1984 FX
- 1979 / 1983 FLT
- 1982 / 1983 FXR
ACCESSORY ITEMS
- 16-0622
- 16-0029
- 60-0167
REPLACEMENT PARTS
- 11-1365
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