0 item(s) in My Cart

Progressive Suspension 440 Series Heavy Duty Shocks For Harley Davidson Road King/Electra Glide/Street Glide/Road Glide 2006-2010 - Black - 13.5 Inch - 440-4021B

Progressive Suspension 440 Series Heavy Duty Shocks For Harley Davidson Road King/Electra Glide/Street Glide/Road Glide 2006-2010 - Black - 13.5 Inch - 440-4021B

Progressive Suspension 440 Series Heavy Duty Shocks For Harley Davidson Road King/Electra Glide/Street Glide/Road Glide 2006-2010 - Black - 13.5 Inch - 440-4021B

Item No.
774357
Buy Box
  1. Availability:
    In Stock
  2. Availability:
    Out of Stock

Product Details


Progressive Suspension 440 Series Heavy Duty Shocks For Harley Davidson Road King/Electra Glide/Street Glide/Road Glide 2006-2010 - Black - 13.5 Inch - 440-4021B

High-pressure gas-charged for consistent damping performance

Patented Inertia Active System (IAS) damping for unsurpassed handling and comfort

Top mount threaded preload adjuster allows for fine tuning with a simple twist of the cap

Feature two independent rebound damping circuits

Available in chrome billet aluminum end caps with chrome springs or black anodized end caps with powder coated black springs

Standard shocks are for the average single rider; heavy-duty shocks are better fitted for the touring rider carrying passengers or a body weight of 225 lb. and up

Inertia valve determines whether the soft (wheel) circuit or the firm (chassis) circuit is utilized to optimize both handling and comfort automatically

All three damping circuits, compression, as well as soft and firm rebound are also velocity sensitive

TUV approved.
2010 Harley Davidson FLHR Road King Heavy-duty shock applications are recommended for bikes with additional add on accessories, rider weight over 200 lbs., or passenger use over 50% of the time

2009 Harley Davidson FLHR Road King Heavy-duty shock applications are recommended for bikes with additional add on accessories, rider weight over 200 lbs., or passenger use over 50% of the time

2008 Harley Davidson FLHR Road King Heavy-duty shock applications are recommended for bikes with additional add on accessories, rider weight over 200 lbs., or passenger use over 50% of the time

2007 Harley Davidson FLHR Road King Heavy-duty shock applications are recommended for bikes with additional add on accessories, rider weight over 200 lbs., or passenger use over 50% of the time

2006 Harley Davidson FLHR Road King Heavy-duty shock applications are recommended for bikes with a