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 and a smooth ride with their robust double-wall steel construction and nitrogen-charged, multi-stage velocity-sensitive valving. A five-position cam-style preload adjuster lets you tune for your weight and riding style, ensuring optimal performance on your Harley-Davidson.
Why riders pick this
Consistent damping for a smooth ride
Durable double-wall steel construction
Nitrogen-charged for fade resistance
Multi-stage velocity-sensitive damping
Five-position cam-style preload adjustment
Riders looking for a proven upgrade to their Harley-Davidson's suspension will find the Progressive 412 Series shocks a reliable choice. These shocks are built to provide a more controlled and comfortable experience, absorbing road imperfections more effectively than stock units. They are a solid foundation for any rider seeking improved handling and a better connection to the road.
Built for V-Twin Performance
Double-wall steel damper body for enhanced durability
High-pressure nitrogen gas charging maintains consistent damping
Multi-stage velocity-sensitive damping adapts to varying conditions
Five-position cam-style preload adjuster for quick tuning
Progressive-rate spring options available in standard or heavy-duty
Personalized Ride Tuning
The ability to personalize your ride is a significant benefit of the 412 Series. With the accessible five-position cam-style preload adjuster, you can easily set the sag and stiffness to match your specific needs, whether you're riding solo, with a passenger, or carrying extra gear. This adjustability ensures your Harley-Davidson responds precisely how you want it to, enhancing both comfort and confidence.
Specifications
Brand: Progressive
Manufacturer Part #: 412-4076C
Category: Suspension / Shocks and Struts
Weight: 10.6 lb
WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov
Common questions
Can I adjust these shocks to fit my weight?
Yes, the five-position cam-style preload adjuster lets you dial in the suspension's stiffness to match your weight and riding style, or when riding with a passenger.
Are different spring rates available?
Yes, these shocks are available with progressive-rate spring options in either standard or heavy-duty, allowing you to select the best fit for your riding needs.
Will these shocks change the ride height of my Harley-Davidson?
The 412 Series shocks are typically designed to maintain a similar ride height to stock. However, specific applications may vary slightly. Always confirm fitment for your model.
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
T14-669179
WEIGHT
10.6 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 Rear Shock...
$379.95
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