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 adjustability for Harley-Davidson riders of all sizes. Built with double-wall steel construction and nitrogen-charged, multi-stage velocity-sensitive valving, these shocks provide smooth suspension performance. A five-position preload adjuster lets you dial in comfort whether you're a light or heavy rider.
For Harley-Davidson riders seeking a versatile and effective suspension upgrade, the Progressive 412 Series shocks are a prime choice. These shocks are engineered to smooth out your ride, offering superior control and comfort compared to stock units. Their robust design ensures durability and consistent performance, making every journey more enjoyable.
The ability to quickly adjust your suspension is a game-changer, and the 412 Series makes it easy. The five-position cam-style preload adjuster allows you to fine-tune the stiffness to match your specific needs—whether you're riding solo, with a passenger, or carrying extra gear. This personalized adjustment ensures your Harley-Davidson always feels planted and comfortable, regardless of the load.
Can I adjust the preload on these shocks?
Yes, the five-position cam-style preload adjuster lets you tune stiffness for light to heavy riders without needing specialized tools beyond a spanner wrench.
What spring options are available?
These shocks are available with either Standard or Heavy-Duty progressive rate springs, allowing you to choose the best option for your weight and riding style.
Will these shocks improve my cornering ability?
By providing more consistent damping and better control over the rear wheel, the Progressive 412 Series shocks can contribute to improved stability and confidence in corners.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669181 |
| WEIGHT | 10.1 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.
