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 affordable, durable suspension tuning for Harley-Davidson with a doublewall steel body, nitrogen-charged valving, and five-position preload adjustment. Built to improve ride quality across a range of rider weights without breaking the bank.
For Harley-Davidson riders seeking a significant suspension upgrade without a significant hit to the wallet, the Progressive 412 Series shocks are an ideal choice. These shocks are engineered with a durable double-wall steel body and feature high-pressure nitrogen-charged damping, which ensures consistent performance and prevents fade even during aggressive riding. The multi-stage velocity-sensitive valving provides a responsive and controlled feel, smoothing out rough roads and improving overall stability.
The Progressive 412 Series shocks offer a straightforward path to better ride quality on your Harley-Davidson. The integrated 5-position cam-style preload adjuster allows you to quickly adapt the suspension to your specific needs—whether you're riding solo, with a passenger, or carrying luggage. This easy adjustability, combined with the choice of standard or heavy-duty spring rates, ensures you can optimize your bike's handling and comfort for any adventure.
Can I adjust the preload myself?
Yes, the 5-position cam-style adjuster lets you dial preload for your weight and riding style without tools, making adjustments quick and easy.
What's the difference between standard and heavy-duty springs?
Heavy-duty springs provide stiffer support for heavier riders, frequent two-up riding, or when carrying significant luggage, offering better control and preventing bottoming out. Standard springs are suitable for average-weight riders and typical riding conditions.
Will these shocks change the stance of my bike?
While primarily designed for improved performance, selecting the correct shock length and spring rate for your model can influence your bike's stance and ride height. Always confirm fitment with our Shop by Bike tool.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669147 |
| WEIGHT | 10.2 lb |
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.
