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 suspension tuning at an accessible price point. They feature a durable doublewall steel body, nitrogen-charged damping, and a five-position preload adjuster.
This combination allows you to match any rider weight and ensures smooth, consistent performance across Harley-Davidson applications. Experience improved handling and comfort on every ride.
These shocks are designed to provide a noticeable improvement in your Harley-Davidson's ride quality and control. The ability to quickly adjust preload means you can optimize your setup for solo rides, two-up cruising, or loaded touring. Always verify your specific year and model compatibility with our Shop by Bike feature before ordering, as suspension fitment varies by chassis generation.
Can I adjust the preload on the fly?
Yes, the 5-position cam-style preload adjuster lets you tune ride height and stiffness without tools, making adjustments quick and easy.
Are these shocks a significant upgrade over stock?
The Progressive 412 Series offers improved damping characteristics and adjustability compared to many factory shocks, providing a more controlled and comfortable ride.
How do I choose between standard and heavy-duty springs?
Standard springs are suitable for average weight riders and light loads, while heavy-duty springs are recommended for heavier riders, frequent two-up riding, or carrying significant luggage. Confirm your needs with our Shop by Bike tool.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669133 |
| WEIGHT | 10.0 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.
