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 bring durable, tuneable suspension performance to your Harley-Davidson. Featuring sturdy double-wall steel construction and nitrogen-charged damping, these shocks are built to last and perform. The intuitive five-position preload adjuster allows you to effortlessly dial in comfort and handling to match your weight and riding style.
Transform your Harley-Davidson's ride with the Progressive 412 Series shocks. Engineered for the demands of V-twin motorcycles, these shocks provide a smooth and controlled experience, even over challenging road surfaces. The multi-stage velocity-sensitive valving ensures consistent damping response, adapting to varying road conditions for optimal tire contact and rider comfort.
The 412 Series shocks are an excellent upgrade for any Harley rider seeking improved handling and a more comfortable ride. Their proven design and easy adjustability make them a reliable choice for daily commutes, long tours, or spirited weekend rides. Combine them with a front-end suspension upgrade for a balanced and high-performing V-twin setup.
How do I adjust the preload on these shocks?
The 5-position cam-style adjuster allows you to change preload without any tools. Simply rotate the cam to your desired setting to match your weight and riding preference.
Are these shocks compatible with my specific Harley-Davidson model?
The Progressive 412 Series covers many Harley-Davidson models. Please use our Shop by Bike tool to confirm the exact fitment for your year and model before ordering.
What maintenance do these shocks require?
These shocks are designed to be largely maintenance-free. Regular inspection for leaks or damage is recommended, but no periodic servicing like oil changes is typically required for the shocks themselves.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-613999 |
| WEIGHT | 9.4 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.
