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 heavy-duty shocks are designed for riders who demand consistent suspension performance under heavier loads or more aggressive riding. Featuring multi-stage velocity-sensitive damping within a durable double-wall steel body, these shocks are built to handle the demands of the open road.
These Progressive 412 Series shocks offer a significant upgrade, providing improved control and comfort for your Harley-Davidson, especially when carrying passengers or luggage. The robust construction and advanced damping system work together to absorb bumps and maintain stability, giving you confidence through every curve. With a focus on durability and adjustability, these shocks are a smart investment for any V-twin owner.
The Progressive 412 Series heavy-duty shocks are ideal for riders who frequently carry extra weight or prefer a firmer, more controlled ride. The easy-to-use preload adjuster means you can quickly adapt your suspension setup to match your current load or terrain. Elevate your Harley's performance and comfort, making every mile more enjoyable and secure.
What spring rates do the 412s come with?
The 412 Series shocks are available with standard or heavy-duty progressive rate springs. This specific product features the heavy-duty springs, ideal for heavier loads or more aggressive riding.
Is the preload adjustable on these shocks?
Yes, these shocks feature a 5-position cam-style preload adjuster, allowing you to easily adjust the spring tension to suit your riding conditions or load without special tools.
Will these shocks provide a firmer ride than stock?
Given their heavy-duty progressive rate springs, these 412 Series shocks are designed to offer a more controlled and potentially firmer ride than standard factory units, especially under load, to prevent bottoming out and improve handling.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614004 |
| WEIGHT | 10.2 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
