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Progressive Suspension Heavy Duty 422 Series Shocks

Manufacturer Part Number 422-4001C

J&P Part: 504-843 On Sale!

10 Reviews

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  • Progressive Suspension Heavy Duty 422 Series Shocks
Product may vary from photo(s).

$449.96 Save 10%! Regularly: $499.99

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10 Reviews

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Description for Progressive Suspension Heavy Duty 422 Series Shocks 

Progressive Suspension Heavy Duty 422 Series Shocks

• Steel-bodied, monotube dampers, wrapped with a black powder-coated, progressive-rate steel coil spring

• The dampers feature a nitrogen charge that eliminates cavitation and creates a consistent ride performance with no fading

• The 422 series is a fully adjustable Softail shock, with adjustable ride height and spring pre-load

• The shocks are impressive with a show chrome quality cover that includes 4 ports for coil spring visibility

Important Product Notes

Product Specs

Adjustable: Yes

Full Covers: Yes

Gas Filled: Yes

Manufacturer Part Number: 422-4001C

Sold in Units: Pair

Standard or Heavy Duty: Heavy Duty

Fitment for Progressive Suspension Heavy Duty 422 Series Shocks 

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Click (+) to view all compatible models

Harley-Davidson® Models

Softail Bad Boy FXSTSB : 1995–1997
Softail Custom FXSTC : 1989–1998
Softail Fat Boy FLSTF : 1990–1999
Softail Heritage Classic FLSTC : 1989–1999
Softail Heritage FLST : 1989–1990
Softail Heritage Springer FLSTS : 1997–1999
Softail Night Train FXSTB : 1999
Softail Nostalgia FLSTN : 1993–1996
Softail Springer FXSTS : 1989–1999
Softail Standard FXST : 1989–1990, 1999

Customer Reviews for Progressive Suspension Heavy Duty 422 Series Shocks 

Overall Rating:
5/5 based on 10 ratings

5 by

I installed my new Progressive heavy duty shocks on my 1997 Fatboy that has 39000 miles on it. I purchased it used so I don't know what it road like when it was new. But they were obviously shot they would bottom out and was hurting my back. At first I thought installing them would be a fairly easy job, a couple of hours maybe I mean it's 4 bolts how tough can it be LOL!, well it didn't go quite as I had imagined. Once I started to work on them I quickly discovered you can't get a socket on the bolts there's not enough room. I had to go and buy a special wrench. the next obstacle was my lift / jack. Once I finally got the bolts off I soon found out I couldn't get the shock out without lowering the bike pulling the jack out from under it so I could slide the shock out from the frame. I should of had somebody there to help me. putting the new ones back on turned to be a little tricky also. Had to unstrap the bike and rock it a little to line up the last bolt. The bike almost fell over on me, craped my pants a little. Once they were installed I thought maybe I did something wrong, the bike didn't budge when I got on it and jumped up and down on it to see how the shocks felt. They came from the factory set at the lightest setting and 1 inch lower than stock height. that worked for me. So I took the old Boy out for a ride. Whoa! What a difference I wish I would have put them on sooner I live in Michigan and some of the roads can be pretty harsh for a Softail, spine crushing. These things smoothed out the road. Turned some of those harsh pot holes into butter like floating on air, almost. I love riding that bike even more now. Money well spent excellent upgrade very high quality, beautifully finished. the only negative I could say is that 2 of the bushings were not well installed fully but once I put the bolts through and tightened them down they were good to go. Going to do the front fork sliders this winter. Thanks Progressive and J&P.

5 by

Great replacement for stock from 92 FXSTC. and as usual, shipping was quick from J&P

5 by

unbelievable improvement in ride quality over stock. Love the adjustability factor. Excellent value for the ride improvement per dollar spent!

5 by

The wife loves them used to replace stock shocks that had 129K on them

5 by

Got my new shocks they went on fairly easy and they work great! I should have gotten them a year ago it would have saved me a lot of work. They were a lot of money but worth it.

5 by

Look good and very effective

5 by

Look good and very effective

5 by

should have bought them years ago!

5 by

no complaints here. jp shipped my shocks immediately. these shocks not only look great and installation was not a problem. my 99 night train feels and rides as good as ever.

5 by

Excellent shocks. Install was easy install as was adjustments, however it took forever to get these from the manufacturer. J&P was excellent as always.

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Important Product Notes

Note: When shocks are shorter than stock, clearance must be carefully checked for potentially dangerous interference.

Note: Standard Duty shocks are for ride loads under 225 lbs., Heavy Duty shocks are for ride loads regularly over 225 lbs.

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