Progressive Suspension has focused exclusively on American V-twin suspension since 1982, and its Monotube fork cartridges and 400/970/970G shock series are among the most common upgrades on baggers and Softails. For most riders the stock rear shock is the single worst part on the bike — this is the fix.
Progressive 412 Series shocks deliver consistent damping performance for Harley-Davidson riders looking for a reliable suspension upgrade. Built with double-wall steel construction and nitrogen-charged, multi-stage velocity-sensitive valving, these shocks are designed to smooth out bumps and maintain durability over thousands of miles. They offer a straightforward price point for riders seeking improved ride quality.
Why riders pick this
Consistent damping performance for Harley-Davidson
Robust double-wall steel damper body
Nitrogen charged for fade-free operation
Multi-stage velocity-sensitive damping
5-position cam-style preload adjuster
Improve your Harley-Davidson's handling and comfort with Progressive 412 Series shocks. These shocks are engineered to provide a noticeable upgrade from factory suspension, offering better control and a more composed ride. The robust construction ensures they can withstand the demands of the road, giving you confidence whether you're cruising through town or tackling long distances.
Reliable Damping for Every Ride
Durable double-wall steel damper body construction
High-pressure nitrogen gas charging for consistent performance
Multi-stage velocity-sensitive damping for improved control
5-position cam-style preload adjuster for easy tuning
Available with standard or heavy-duty progressive-rate springs
Set Up for Your Style
The 412 Series shocks are designed for riders who want to customize their suspension without complexity. The integrated preload adjuster makes it simple to dial in the perfect firmness for your weight, passenger, or gear. This adjustability ensures your Harley performs optimally in various riding scenarios, enhancing both comfort and stability. Consider these shocks a foundational upgrade for any V-twin enthusiast.
Specifications
Brand: Progressive
Manufacturer Part #: 412-4043C
Weight: 12.4 lb
Category: Suspension / Shocks and Struts
WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov
Common questions
Can I adjust the preload on these shocks?
Yes, the 5-position cam-style preload adjuster allows you to easily dial in firmness for light or heavy riders without tools.
Will these shocks improve my ride comfort?
The Progressive 412 Series shocks are designed to provide improved damping and control, which typically translates to a more comfortable and stable ride compared to stock suspension.
Are different spring rates available?
Yes, these shocks are available with either standard or heavy-duty progressive-rate springs to better suit your riding weight and style.
Ordering from Vtwinbikers
Brand new, sourced through authorized US distribution — never used, never grey-market.
Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
BRAND
Progressive
TYPE
Shocks and Struts
SKU
T14-614010
WEIGHT
12.4 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
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Dec 25, 2025
Stiff
The shocks seem super nice, but they are incredibly stiff. Turns out they’re 130/200 top to bottom. Would be nice to have an option to choose your spring rate. Couldn’t find it in the description either. Have them installed on a 1998 sportster 1200 by the way. I’m about 180lbs and they don’t move at all, my friend who weighs about 260 also said they were way to firm. Hope this helps.
Progressive 412 Series Shocks - H...
$1.410.000,00
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