HEAVY DUTY FORK SPRING KIT Heavy duty version of the Progressive Suspension fork springs The cost effective choice for a substantial increase in front end ride quality Includes Progressive Suspension springs combined with preload spacers Can improve front end stability and brake dive control as well as increase comfort for heavier riders or those seeking a firm, high performance feel out of their forks. FORK TUBE DIAMETER 1.535 in Yes PACKAGING Pair POSITION Front Application Specific Yes Spring Rate Heavy Duty STYLE Performance Replacement TYPE Fork Spring Kit Fits the following models: 1992 Dyna Daytona - FXDB 1992 Dyna Glide Custom - FXDC 1991 Dyna Sturgis - FXDB 1988 - 1993 Sport Glide - FXRT 2014 - 2015 Super Low - XL 1200T 2004 - 2006 XL 1200C 2007 - 2015 XL 1200C Custom (EFI) 2006 XL/48.2 L 2007 - 2011. XL 1200L Low (EFI) 2007 - 2012. XL 1200N Nightster 2004 - 2006. XL 1200R Roadster 2007 - 2008. XL 1200R Roadster (EFI) 2012 - 2015. XL 1200 V Seventy Two 2010 - 2015. XL 1200X Forty Eight 2004 - 2006. XL 347.6 in 2007 - 2008. XL 883 (EFI) 2004 - 2006. XL 883C Custom 2007 - 2009. XL 883C Custom (EFI) 2005 - 2006. XL 883L Low 2007 - 2010. XL 883L Low (EFI) 2011 - 2015. XL 883L Superlow 2009 - 2015. XL 883N Iron 2005 - 2006. XL 883R 2007 XL 883R (EFI)