Progressive Suspension 444 Series 13" Shocks - Heavy Duty Product Number: 444-4020BFinish: BlackSpring Rate: 105/150 (lbs/inch) Uses the all new Frequency Sensing Technology (FST) Allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride quality Deflective disc valving You no longer need special tools to adjust, simply adjust the spring pre-load by hand High-pressure gas charged with a progressive rate spring creates a consistent performance Sold in pairs Made in the U.S.A. Note: A shock which is slightly longer than stock may alter the head angle slightly and provide somewhat quicker steering.Note: A shock which is slightly shorter than stock may slightly alter the head angle and provide somewhat slower steering.Note: Heavy Duty Applications are recommended for bikes that are operated at or near the manufacturer's maximum load rating over 50% of the time.Fit: Harley-Davidson(1984-1985) Electra Glide - FLH(1984-1987) Electra Glide - FLHT(2009-2013) Electra Glide Classic - FLHTC(1984-2005) Electra Glide Classic - FLHTC(2007-2008) Electra Glide Classic (EFI) - FLHTC(1996-2006) Electra Glide Classic Injected - FLHTC I(1984-1985) Electra Glide Special - FLHX(1987-1993) Electra Glide Sport - FLHS(1984) Electra Glide Sport - FLHS(2009) Electra Glide Standard - FLHT(1995-2006) Electra Glide Standard - FLHT(2007-2008) Electra Glide Standard (EFI) - FLHT(2003-2006) Electra Glide Standard Injected - FLHT I(2009-2018) Electra Glide Ultra Classic - FLHTCU(1989-1999) Electra Glide Ultra Classic - FLHTCU(2007-2008) Electra Glide Ultra Classic (EFI) - FLHTCU(1995-2006) Electra Glide Ultra Classic Injected - FLHTCU I(2015-2016) Electra Glide Ultra Classic Low - FLHTCUL(2011-2018) Electra Glide Ultra Limited - FLHTK Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Progressive Suspension 444 Series Shocks Part Number 444-4020B Fitment Type Unit Sale Qty Style Material Color Size Finish Position Functional Length Cable Sleeve Length Cable Sleeve Travel Driver Seat Length Passenger Seat Length Driver Seat Width Passenger Seat Width Piston/Cylinder Size Piston Size Added Cylinder Stroke Volume Final Engine Displacement Exhaust Configuration Muffler Size Muffler End/Tip Style Windshield Height Windshield Width Handlebar Diameter California Air Resource Board Compliance FALSE Product Disclaimer Items Included Fitments