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 multi-stage velocity-sensitive damping in a double-wall steel body, tuned for consistent suspension performance across light to heavy riders. The nitrogen-charged design with five-position preload adjustment lets you dial comfort and handling without swapping springs.
Transform your Harley-Davidson's ride with the Progressive 412 Series shocks, engineered for superior performance and comfort. The robust double-wall steel construction ensures durability, while the high-pressure nitrogen charge maintains consistent damping even under demanding conditions. With multi-stage velocity-sensitive valving, these shocks adapt to varying road surfaces, providing a smooth and controlled feel that significantly enhances your riding experience.
The Progressive 412 Series shocks are more than just a replacement; they're an upgrade that redefines how your Harley handles. Their easy-to-use preload adjustment means you can quickly set them up for different loads or riding preferences, ensuring optimal performance whether you're solo or two-up. Pair these with a complementary front suspension upgrade for a fully balanced and responsive ride.
Can I adjust preload on the 412 shocks?
Yes – the 5-position cam-style preload adjuster lets you dial in stiffness for your specific weight and riding style. It's a quick and easy adjustment.
What is multi-stage velocity-sensitive damping?
This advanced valving system allows the shock to respond differently to varying shaft speeds, providing soft damping for small bumps and firm damping for larger impacts, resulting in a smoother, more controlled ride.
Do these shocks come with springs?
Yes, the Progressive 412 Series shocks come complete with springs, and you can often choose between standard and heavy-duty progressive spring rates to best suit your needs.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669141 |
| 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
