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Progressive Suspension Stock Height Fork Cartridge Kit

J&P Cycles Part Number: 166-3660

Manufacturer Part Number: 31-4006

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Description for Progressive Suspension Stock Height Fork Cartridge Kit

• True high performance and increased comfort is provided with this kit by upgrading the technology your front forks are using

• This state-of-the-art monotube fork Kit represents the pinnacle of front end handling

• High performance specialty components replace the sloppy open bath damping found in stock H-D forks

• The kit features a set of gas charged monotube fork cartridges and a set of custom tuned fork springs, and is a complete direct replacement for your stock internal components

• Improved resistance to front brake dive

• Improved front end stability

• Improved cornering

• Improved bottoming control

Product Specs

Product Specs for Progressive Suspension Stock Height Fork Cartridge Kit

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Compatible Models

Harley-Davidson® Models

  • Touring Electra Glide Police FLHTP : 2017–2020
  • Touring Electra Glide Standard FLHT : 2019–2020
  • Touring Electra Glide Ultra Classic FLHTCU : 2017–2019
  • Touring Road Glide CVO FLTRXSE : 2018–2019
  • Touring Road Glide FLTRX : 2017–2019
  • Touring Road Glide Special FLTRXS : 2017–2020
  • Touring Road Glide Ultra FLTRU : 2017–2019
  • Touring Road King FLHR : 2017–2019
  • Touring Road King Police FLHP : 2017–2020
  • Touring Road King Special FLHRXS : 2017–2020
  • Touring Street Glide Anniversary FLHX : 2018
  • Touring Street Glide CVO FLHXSE : 2017–2020
  • Touring Street Glide FLHX : 2017–2019
  • Touring Street Glide Special Anniversary FLHXS : 2018
  • Touring Street Glide Special FLHXS : 2017–2020
  • Touring Ultra Limited Anniversary FLHTK : 2018
  • Touring Ultra Limited CVO Anniversary FLHTKSE : 2018
  • Touring Ultra Limited CVO FLHTKSE : 2017–2020
  • Touring Ultra Limited FLHTK : 2017–2019
Customer Reviews

Customer Reviews for Progressive Suspension Stock Height Fork Cartridge Kit

Overall Rating

5 out of 5 stars (based on 67 reviews)

5 stars (64)

4 stars (3)

3 stars (0)

2 stars (0)

1 star (0)

0 stars (0)

Trash Tank on 10/9/2019

Easy to install, great improvement over stock. this has to be my best upgrade on bike.

VINCENT on 8/30/2019

Just put them on so no review yet

DOMINIC on 8/23/2019

Works as advertised with quick delivery.

SAM on 8/6/2019

Produit de haute qualité. Colis envoyé très rapidement. Il est ce sont des pros dans tout ce qu'ils font. Ils sont au top. Entreprise à recommandé. Sam.

cmmatth611 on 7/30/2019

These shocks work great. Completely changed the front end on my ultra. No more nose dives when braking and gave the front end a much firmer, sportier feel. Fantastic for the money.

motorfish on 7/24/2019

Replaced stock worthless springs on Sportster 48 to gain additional inch and half of travel. Much closer to what suspension should be like, hitting a pothole does not feel like breaking off the frond end anymore. Missing adjustable rebound though.

KEITH on 6/24/2019

I love the handling and better breaking that this suspension upgrade provides. Once the rear 422s were dialed in to my weight, I could take speed bumps and turns about 10mph faster while feeling the same level of comfort on my FatBoy lo.

ED on 5/13/2019

Nice upgrade to stock suspension. Its a little stiff but completely eliminates the sag when braking and cornering. Would definitely recommend this product.

GREGORY on 5/5/2019

The Monotubes are easy to install land work 100 better than the cheap stock suspension. Greg

Sancho93 on 4/29/2019

Swapped from stock front suspension on my 2012 sportster 72 and it is a world of difference. My bike no longer rocks back and forth when I'm changing gears at high speeds. So much more stable going into corners and no more nose dive when I'm coming to a stop. Would highly recommend this product.

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