Progressive Suspension 444 Series 13" Shocks - Heavy Duty 

Product Number: 444-4020B
Finish: Black
Spring 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