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 smooth, consistent damping through a double-wall steel body and multi-stage velocity-sensitive valving. Backed by nitrogen gas charging, these shocks are built for long-term performance.
The Progressive 412 Series shocks are a direct upgrade for riders looking to improve their Harley-Davidson's handling and ride comfort. Featuring a durable double-wall steel construction and high-pressure nitrogen gas charge, these shocks provide consistent damping without fade. The multi-stage velocity-sensitive valving reacts precisely to road conditions, giving you better control and a smoother ride.
Designed for the performance-minded V-twin owner, the 412 Series shocks offer easy adjustability to match your riding style and load. The five-position cam preload adjuster allows you to quickly dial in your suspension for solo rides, two-up cruising, or loaded touring. Choose the black finish for a stealthy look that complements any custom build on your Harley-Davidson.
Can I adjust these shocks without tools?
Yes, the 5-position cam-style preload adjuster lets you fine-tune the suspension for your weight and riding style without needing any tools.
Are these shocks compatible with my Harley-Davidson?
These shocks fit a variety of Harley-Davidson models. Please use our Shop by Bike tool to verify your specific year and model before ordering to ensure correct shock length and mounting.
What is the benefit of multi-stage velocity-sensitive valving?
Multi-stage velocity-sensitive valving allows the shock to react differently to various road impacts, providing both a comfortable ride over small bumps and firm control over larger compressions.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669150 |
| WEIGHT | 11.92 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.
