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Keith Black flat piston set is standard size with a compression ratio of 8.6:1, for 1984-up Big Twin Evolution models.


VT No: 11-2216
Keith Black flat piston set is standard size with a compression ratio of 8.6:1, for 1984-up Big Twin Evolution models.
The Keith Black 390 hypereutectic alloy is cast in a permanent steel mold which makes it possible to build a light weight piston that makes more power and uses less fuel and lasts longer. Pistons are standard size for a 3.498" bore and has a 8.5:1 compression ratio. The low heat transfer of the alloy keeps the skirts cool so piston expansion is minimal. The combination of a low heat transfer piston alloy and high compression ring placement increases power and economy. The high ring placement alone reduces detonation and increases the top ring temperature. **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:
FXR 1984-1994
FXD 1991-1998
FLST 1986-1998
FLT 1984-1998
FXST 1984-1998
UOM: 1 - SET
Country of Origin: Imported

Manufacturer: Keith Black
2018 Catalog pages: 183

2017 Catalog Page: 183


V-Twin Manufacturing Part Number: 11-2216
Manufacturer: Keith Black
Manufacturer Part Number: KB258 STD

Harley-Davidson & Indian OEM Cross Reference Part Numbers:            

Tech Notes:
Use the ring end gap instructions to avoid ring butting.

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

Detailed Instructions: CLICK HERE!

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80" Evolution Flat Piston Kit Standard 11-2216

  • Brand: Keith Black
  • Product Code: 11-2216
  • Availability: In Stock
  • $211.33


Tags: V-Twin, Harley Davidson, Big Twin 1984-Up, Engine, Piston, Evolution Pistons