1200cc 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 3.528 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 Sym-Asym Piston Installation Guide.pdf
FITS
Harley Davidson XL 1988
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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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