Progressive 412 Series Shocks - Harley-Davidson
About Progressive
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 bring consistent damping performance to your Harley-Davidson, utilizing a robust doublewall steel body and nitrogen-charged, velocity-sensitive valving. This design ensures a controlled and comfortable ride across varying road conditions. Riders can fine-tune their setup with the convenient five-position preload adjuster.
Why riders pick this
- Consistent damping performance with robust construction
- Nitrogen-charged, velocity-sensitive valving for smooth control
- Progressive-rate springs absorb bumps effectively
- Five-position preload adjustment for personalized tuning
The Progressive 412 Series shocks are engineered to enhance your Harley-Davidson's handling and ride quality. Their reliable construction and thoughtful design address common V-twin suspension shortcomings, providing a significant upgrade over factory units without overcomplicating the setup.
Consistent Performance for the Long Haul
- Doublewall steel damper body provides durability and consistent performance
- Nitrogen-charged, multi-stage velocity-sensitive valving adapts to road conditions
- Progressive-rate springs smooth out bumps across the suspension stroke
- Five-position cam-style preload adjuster allows quick tuning for rider weight and load
Dialing In Your Ride
Whether you ride solo or two-up, the 412 Series shocks offer the adjustability needed to optimize your Harley's suspension. The easy-to-use preload adjuster means you can quickly adapt your bike for different loads or riding styles, ensuring a comfortable and responsive experience every time you hit the road. These shocks are a solid foundation for any rider looking to improve their V-twin's ride.
Specifications
- Brand: Progressive
- Manufacturer Part #: 412-4006B
- Category: Suspension / Shocks and Struts
- Weight: 9.5 lb
- California Prop 65 Warning: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov
Common questions
Can I adjust the preload myself?
Yes, the 5-position cam-style preload adjuster lets you tune the spring rate to match your weight and riding style without special tools.
Will these shocks change my ride height?
These shocks are designed to maintain a stock-equivalent ride height, but adjusting the preload can slightly influence sag and overall feel.
Do I need any special tools for installation?
Basic hand tools are typically sufficient for installation, but always refer to a service manual for proper procedure and torque specifications for your specific Harley-Davidson model.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-613990 |
| WEIGHT | 9.5 lb |
