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 tunable suspension performance for your Harley-Davidson. Engineered with a nitrogen-charged, multi-stage velocity-sensitive damper, these shocks provide consistent control. Riders can dial in their preferred ride for various weights and riding styles.
The Progressive 412 Series shocks are built to elevate your Harley-Davidson's ride quality. Featuring durable double-wall steel construction and high-pressure nitrogen charging, they offer consistent damping across diverse road conditions. The multi-stage velocity-sensitive valving reacts intelligently to bumps, providing a smoother, more controlled experience compared to standard suspension.
With the Progressive 412 Series, adjusting your suspension to match your load or riding preferences is straightforward. The 5-position cam-style preload adjuster makes it easy to switch between a softer ride for solo cruising and a firmer setup for two-up riding or spirited runs. These shocks are a solid upgrade for any Harley-Davidson owner looking to enhance their bike's handling and comfort without compromise.
How do I adjust the preload on these shocks?
The 5-position cam-style adjuster on the shock body allows you to easily dial in the preload. This adjustment helps set the sag for your weight and riding conditions without needing special tools.
Are these shocks suitable for two-up riding?
Yes, the 5-position preload adjuster is designed to accommodate various loads, including two-up riding. You can quickly adjust the preload to maintain proper suspension performance with a passenger.
Will these shocks improve handling over stock units?
Absolutely. The multi-stage velocity-sensitive damping and progressive rate springs are engineered to provide superior control and comfort compared to many factory suspension setups, enhancing overall handling.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669166 |
| WEIGHT | 10.4 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.
