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 durable, adjustable suspension for Harley-Davidson motorcycles. They feature a proven doublewall steel design and multi-stage velocity-sensitive damping for a controlled ride.
The five-position preload adjuster lets you tune for your weight and riding style, ensuring your bike handles exactly how you want it. High-pressure nitrogen charging ensures consistent performance mile after mile, reducing fade during aggressive riding or long trips.
Whether you prefer a firm or plush ride, the 412 Series allows you to customize your Harley-Davidson's suspension feel. These shocks are a solid upgrade for riders seeking improved stability and comfort. Be sure to verify your specific model year and chassis using our Shop by Bike feature to ensure correct application.
Can I adjust the preload myself?
Yes, the 5-position cam-style preload adjuster is tool-free, letting you tune for your weight and riding style without removing the shocks.
What's the benefit of nitrogen charging?
Nitrogen charging helps prevent cavitation and maintains consistent damping performance, especially during extended use, leading to a more stable ride.
Will these fit my specific Harley-Davidson model?
Progressive 412 Series shocks have applications across many Harley-Davidson models. Please confirm your specific model year and chassis using our Shop by Bike tool for precise fitment.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669132 |
| WEIGHT | 10.5 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.
