Made in the USA
On Sale
Read ( 2 ) Reviews

Progressive Suspension 444 Black 13" Shocks

J&P Cycles Part Number: ZZ35168

Manufacturer Part Number: 444-4210B

Save $62.53 (10%)

Checking availability...

– Order in the next to ship today

Description for Progressive Suspension 444 Black 13" Shocks

• After more than a decade of ruling the roads with their famous 440 Series shocks with IAS, Progressive Suspension has unveiled another breakthrough design

• It is dubbed Frequency Sensing Technology (FST) for its unique ability to dynamically adjust damping as you ride

• Frequency Sensing Technology allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride quality

• These shocks also feature deflective disc valving, hand adjustable spring pre-load (no special tools needed), and progressive rate springs

• High pressure gas charged for consistent performance

• Sold in pairs

• Lifetime Limited Warranty

Product Specs

Product Specs for Progressive Suspension 444 Black 13" Shocks

Manufacturer Part Number:
Sold in Units:
Warehouse Part Number:
Fitment Questions?

With over 750 years of experience combined, our tech staff has the answers!

Compatible Models

Honda Models

  • Magna V30 VF500C : 1984–1985
Customer Reviews

Customer Reviews for Progressive Suspension 444 Black 13" Shocks

Overall Rating

5 out of 5 stars (based on 2 reviews)

5 stars (2)

4 stars (0)

3 stars (0)

2 stars (0)

1 star (0)

0 stars (0)


I put these on the back of a 07 sportster 1200 low. 13.5". It changed the whole dynamics of my ride. No more back breaking bumps. These are so smooth that I am not considering buying a cruiser now. Worth the money. New bike.


I put these shocks on a 2006 Sportster that currently had a set of 412's on them. The difference is night and day. The dampening is phenomenal. They are well worth the money.

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.

Warranty Information

Manufacture's Lifetime Limited Warranty

Pickup in our Retail Stores

Get Help From Our Industry Experts

  • Monday-Friday: 7 a.m. - 9 p.m. CST
  • Saturday-Sunday: 8 a.m. - 6 p.m. CST
  • Thanksgiving: Closed
  • Christmas Eve: 7a-5p CST
  • Christmas: Closed
  • Help / FAQs