Progressive 412 Series shocks deliver smooth, consistent damping through nitrogen-charged, multi-stage velocity-sensitive valving in a durable double-wall steel body. Available in standard or heavy-duty progressive rate springs with chrome or black finish, plus a five-position preload adjuster to match any rider weight.
Fits Harley-Davidson motorcycles. Verify your specific model and year before ordering to ensure correct application.
Yes — the 5-position cam-style preload adjuster lets you dial in ride height and stiffness to match your weight and riding style.
Heavy-duty springs support more weight and provide firmer support. Standard springs suit lighter riders. Choose based on your body weight and passenger loads.
Not all applications include show chrome covers. Some models offer them as an optional add-on. Check fitment details for your bike.
Nitrogen pressurization prevents aeration and foaming of the oil, delivering consistent damping feel across long rides and repeated braking.
Progressive makes multiple 412 variants for different Harley platforms. Verify the part number matches your year and model before purchasing.
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669183 |
| WEIGHT | 10.1 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.
