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XL 1988-UP
Availability: In stock
SKU: Y005841
Manufacturer: Keith black
$205.61
Keith Black flat top piston set is .040 oversize with a 8.9:1 compression ratio for 1988-up XL 1200cc 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 .040 oversize, for a 3.498"" 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 detoantion 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."
Keith Black flat top piston set is .040 oversize with a 8.9:1 compression ratio for 1988-up XL 1200cc 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 .040 oversize, for a 3.498"" 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 detoantion 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."
sportster - 1988 - XL
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sportster - 1998 - XL
sportster - 1999 - XL
sportster - 2000 - XL
sportster - 2001 - XL
sportster - 2002 - XL
sportster - 2003 - XL
sportster - 2004 - XL
sportster - 2005 - XL
sportster - 2006 - XL
sportster - 2007 - XL
sportster - 2008 - XL
sportster - 2009 - XL
sportster - 2010 - XL
sportster - 2011 - XL
sportster - 2012 - XL
sportster - 2013 - XL
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