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.
The Progressive 412 Series shocks deliver smooth, consistent damping, significantly enhancing the ride quality of your Harley-Davidson. Their durable construction and advanced valving provide a controlled and comfortable experience over varied terrain.
These 412 Series shocks are built with a robust double-wall steel body and feature high-pressure nitrogen gas charging, ensuring consistent performance without fade. The multi-stage velocity-sensitive damping system actively responds to road conditions, absorbing bumps and maintaining stability. This results in a more planted feel and reduced rider fatigue on long hauls or aggressive rides.
The versatility of the Progressive 412 Series shocks allows you to fine-tune your ride for any situation. The five-position cam-style preload adjuster makes it easy to set the ideal ride height and stiffness for your weight, passenger, or luggage. Whether you prefer a chrome or black finish, these shocks offer both performance and style for your Harley-Davidson.
What's the difference between standard and heavy-duty springs?
Standard springs are designed for average-weight riders and typical loads, while heavy-duty springs are ideal for heavier riders, frequent two-up riding, or when carrying significant luggage, providing better support and preventing bottoming out.
Will these shocks improve my cornering ability?
Yes, the consistent damping and proper preload adjustment offered by the 412 Series shocks can significantly improve stability and control through corners, giving you more confidence in your Harley-Davidson's handling.
Are these shocks rebuildable?
The Progressive 412 Series shocks are designed for long-term, maintenance-free performance. While not typically user-rebuildable, their robust construction ensures durability for many miles.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614027 |
| 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.
