1000cc Piston Set .030 Oversize
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 .030 oversize for a 3.188 inch bore and has a 9:1 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.
Instructions: http://www.vtwinmfg.com/Instructions/MS/KB Inst. Guide XL Dome Pistons and Fitment.pdf
FITS
Harley Davidson XL 1972
Harley Davidson XL 1973
Harley Davidson XL 1974
Harley Davidson XL 1975
Harley Davidson XL 1976
Harley Davidson XL 1977
Harley Davidson XL 1978
Harley Davidson XL 1979
Harley Davidson XL 1980
Harley Davidson XL 1981
Harley Davidson XL 1982
Harley Davidson XL 1983
Harley Davidson XL 1984
Harley Davidson XL 1985
Orders over $145.95 qualify for free shipping.
Orders under $145.95pay a flat shipping rate of $10.95 Offer only applies to 48 contiguous states. Hazardous Materials ship UPS Ground only.
Orders that contain backorders, the order will be held until all parts are in. A customer representative will reach out to you if this is the case. At that time a decision can be made whether or not to split the order.
Alaska orders will be charged a flat $35 charge and will be shipped Post Office Priority Mail. We do not ship Oversized mail to Alaska.
Hawaii orders will be charged a flat $35 charge and will be shipped Post Office Priority Mail. We do not ship Oversized mail to Hawaii.
Puerto Rico orders will be charged a flat $35 charge and will be shipped Post Office Priority Mail. We do not ship Oversized mail to Puerto Rico.
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