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 a smooth, consistent ride on Harley-Davidson motorcycles using a nitrogen-charged, multi-stage damping design. Housed in a durable double-wall steel body, they're built to last.
Give your Harley-Davidson the suspension it deserves with Progressive 412 Series shocks. These units feature a high-pressure nitrogen charge and multi-stage velocity-sensitive valving to provide consistent damping and improved handling across various road conditions. The robust double-wall steel body ensures these shocks can withstand the demands of the road, offering a reliable upgrade for any V-twin.
The 412 Series shocks are designed for riders who want to fine-tune their Harley-Davidson's ride without hassle. The five-position preload adjuster allows you to quickly adapt the suspension to your specific weight, passenger, or gear, ensuring optimal comfort and control. These black shocks offer a sleek, understated look that complements a wide range of custom setups, making them a popular choice for performance baggers and cruisers alike.
Can I adjust these shocks for my weight?
Yes, the 5-position cam-style preload adjuster lets you fine-tune the ride for light to heavy riders or different loads without changing springs.
Will these shocks improve my ride quality over stock?
Absolutely. The nitrogen-charged, multi-stage damping and progressive rate springs are designed to provide a significant improvement in comfort and handling compared to most factory Harley-Davidson shocks.
Are these shocks difficult to install?
Installation typically involves basic hand tools and is a common upgrade for V-twin owners. While many riders perform this themselves, professional installation is always an option if you prefer.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669152 |
| WEIGHT | 12.8 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.
