The Keith Black 390 hypereutectic 3.5" bore piston set has a 8.3:1 compression ratio and is standard size. Piston set alloy is cast in a permanent steel mold and includes rings.

VT No: 11-2251
The Keith Black 390 hypereutectic 3.5" bore piston set has a 8.3:1 compression ratio and is standard size. Piston set alloy is cast in a permanent steel mold and includes rings.
**Note:Run engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears, in order to properly break-in new pistons and rings.
Fits:
FL 1978-1984
FX 1978-1984
FLT 1979-1983
FXR 1982-1983
UOM: 2 - SET
Country of Origin: Imported

Size: STD
Manufacturer: Keith Black
2018 Catalog pages: 531

2017 Catalog Page: 535

V-Twin Manufacturing Part Number: 11-2251
Manufacturer: Keith Black
Manufacturer Part Number: KB297 STD

Harley-Davidson & Indian OEM Cross Reference Part Numbers:            

Replacement Items:
11-1363 - 80" Shovelhead Piston Ring Set Standard

Detailed Instructions: CLICK HERE!