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Progressive Suspension 412 Chrome 12" Standard Duty Shocks

J&P Cycles Part Number: 137-652

Manufacturer Part Number: 412-4251C

Save $30.03 (10%)

Gold Club Price: $242.96

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Description for Progressive Suspension 412 Chrome 12" Standard Duty Shocks

The 412 Series shocks are simply the best value shock on the market. The have a simple, durable design which means they will be an improvement to your motorcycle's suspension performance for as long as you are riding. They feature a doublewall steel body construction with nitrogen charged, multi-staged velocity sensitive valving resulting in smooth, consistent damping. A cam style preload adjuster lets you dial in your ride whether you're a light or heavy rider.

• 5-position cam style preload adjuster

• High Pressure Gas Charged for consistant damping performance

• Standard or Heavy-Duty progressive rate springs

• Available in chrome or black

• Backed by a one-year limited warranty

Product Specs

Product Specs for Progressive Suspension 412 Chrome 12" Standard Duty Shocks

Full Covers:
Manufacturer Part Number:
Shock Length:
Shock Style:
Gas Filled
Sold in Units:
Standard or Heavy Duty:
Standard Duty
Warehouse Part Number:
Fitment Questions?

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

Compatible Models

Triumph Models

  • America : 2003–2017
  • America LT : 2014–2017
  • Bonneville America : 2002–2006
  • Speedmaster : 2003–2016
Customer Reviews

Customer Reviews for Progressive Suspension 412 Chrome 12" Standard Duty Shocks

Overall Rating

5 out of 5 stars (based on 17 reviews)

5 stars (14)

4 stars (2)

3 stars (0)

2 stars (1)

1 star (0)

0 stars (0)

STEVEN on 10/16/2019

Shocks arrived in good shape. Easy to install and improved the ride.

EMMETT on 6/14/2019

Just received the 2019 J & P catalog and these shocks are priced at $269. Why was I charged $299.?

CAREY on 6/7/2019

The Progressive 412 shocks fit my '96 Harley Dyna WG perfectly. The bike rear end in now much more lively so I feel less of the road bumps in my lower back. Excellent results. Thanks.

MICHAEL on 6/2/2019

Great fit!

SHANE on 5/13/2019

Way happy with them .. Big improvement..🤟😎🤟

Spirit7089 on 5/12/2019

Fantastic! Fits perfect..

NICOLAS on 4/10/2019

More confidence throughout turns, definitely a softer ride than OE. Easy installation. I like them

greekgod71 on 4/4/2019

looks much better on my Sportster than the stock ones

handy810 on 3/1/2019

5 Star

Huskerjim on 4/29/2016

Rough ride but if you need bike lower it will do the job. It's a 1.5" drop specs but closer to 2".

Important Product Notes

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

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