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 are engineered to deliver consistent, smooth suspension performance for your Harley-Davidson. Featuring a robust double-wall steel body and advanced velocity-sensitive damping, these shocks provide a noticeable upgrade over factory units. The accessible 5-position cam-style preload adjuster allows you to quickly dial in your ride for optimal comfort and handling, whether you're solo or loaded down.
Why riders pick this
- Smooth, consistent suspension performance
- Durable double-wall steel body construction
- Multi-stage velocity-sensitive damping for control
- Nitrogen gas charged for fade resistance
- 5-position cam-style preload adjuster for easy tuning
- Available with standard or heavy-duty progressive rate springs
Experience a significant improvement in ride quality with the Progressive 412 Series shocks. Designed for Harley-Davidson motorcycles, these shocks combine durable construction with advanced damping technology to smooth out rough roads and improve control. The nitrogen-charged design ensures consistent performance across varying temperatures and riding conditions, making every mile more enjoyable.
Consistent Performance, Easy Adjustability
- Double-wall steel damper body for enhanced durability
- Multi-stage velocity-sensitive damping adapts to road conditions
- High-pressure nitrogen gas charged for fade-free performance
- 5-position cam-style preload adjuster for quick, tool-free tuning
- Progressive rate springs offered in standard or heavy-duty options
Engineered for the Road Ahead
The 412 Series shocks are a smart choice for riders looking to enhance their Harley-Davidson's suspension without overcomplicating things. Their straightforward design and effective adjustability make them suitable for a wide range of riding styles and loads. Pair these with a quality fork upgrade for a completely transformed ride that handles bumps and corners with confidence.
Specifications
- Brand: Progressive
- Manufacturer Part #: 412-4018C
- Category: Suspension / Shocks and Struts
- Weight: 11.3 lb
- WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov
Common questions
Can I adjust the preload on these shocks myself?
Yes, the 5-position cam-style preload adjuster is designed for tool-free adjustments, allowing you to easily dial in your ride for different loads or preferences.
What spring rate should I choose?
The standard progressive rate springs are suitable for most riders. If you frequently ride with a passenger, heavy luggage, or are a heavier rider, the heavy-duty springs may offer better support and performance. Confirm your needs with our Shop by Bike tool.
Do I need any special tools for installation?
Installation typically requires basic hand tools. While the preload adjustment is tool-free, we recommend consulting a service manual for proper installation procedures specific to your 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 | T14-613997 |
| WEIGHT | 11.3 lb |
