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 consistent damping performance for Harley-Davidson motorcycles through a durable double-wall steel design. High-pressure nitrogen charging and multi-stage velocity-sensitive valving provide smooth suspension feel across road conditions, while a five-position preload adjuster lets you tune for your weight and riding style.
Experience a significant upgrade in ride quality with the Progressive 412 Series shocks for your Harley-Davidson. Designed for both durability and performance, these shocks feature a robust double-wall steel damper body and are charged with high-pressure nitrogen gas. This combination, along with multi-stage velocity-sensitive damping, ensures a consistently smooth and controlled ride, absorbing bumps and maintaining stability.
The Progressive 412 Series shocks are an essential part of any V-twin's performance upgrade. Their ease of adjustability means you can quickly adapt your suspension for different riding scenarios, whether you're tackling twisties or cruising the highway. Installing these shocks transforms your Harley's handling characteristics, providing a more confident and comfortable experience on every ride.
How do I adjust the preload on these shocks?
The 5-position cam-style preload adjuster allows for quick, tool-free adjustments. Simply rotate the cam to your desired setting to increase or decrease stiffness based on rider weight and load.
What spring rate should I choose?
The choice between standard and heavy-duty progressive rate springs depends on your typical riding weight (rider, passenger, luggage). Consult your owner's manual or a suspension specialist if you are unsure.
Will these shocks improve my cornering ability?
Yes, improved damping and adjustability help maintain better tire contact with the road, leading to more stable and confident cornering. Proper setup is key to maximizing this benefit.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669139 |
| WEIGHT | 10.3 lb |
I bought these for my '06 FLHR and could not be happier. I'm 6' 275 lbs so I went with the heavy duty option. Took about 30 min. to change shocks and the ride has improved considerably, took the jolt out of hitting heaves in the road.
While removing the rear wheel for some other service they just quite literally fell apart in two pieces leaving me with a garage floor full of suspension oil and one unusable shock. Spoke with their warranty rep who told me in so many words that its not their problem. Dissapointed to say the least.
So far loving these, the ride is much smoother and an awesome look. Going for the 12" was a good choice, raised it but not too much.
Just changed from my stock Harley to the 13-in and what a difference it made. Bike handles better and rides better
