What is the main benefit of the 5-position preload adjuster?

The 5-position cam-style preload adjuster allows you to easily modify the suspension's stiffness. This means you can adjust the ride to better suit your weight, a passenger, or cargo, ensuring a more comfortable and controlled ride.

What makes the damping performance consistent?

These shocks utilize nitrogen-charged, multi-stage velocity sensitive valving. This advanced system helps maintain consistent damping performance by reacting effectively to different suspension speeds and road conditions.

Are these shocks suitable for heavy loads?

Yes, the 412 Series offers progressive rate springs, which are designed to provide a better ride experience whether you are riding solo or carrying a passenger or extra gear. You can further fine-tune the setup using the adjustable preload.

Progressive Harley 412 Series Shocks 13.5in - Black

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Specifications

Brand: Progressive
Part #: 412-4078B
UPC: 412-4078B

Progressive Harley 412 Series Shocks 13.5in - Black

Name: Progressive Harley 412 Series Shocks 13.5in - Black
Brand: Progressive
Price: 379.95 USD
Availability: InStock

$379.95

On Backorder — Expected to ship by Apr 25, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Progressive Harley 412 Series Shocks 13.5in - Black. Improve your ride with durable steel construction and adjustable preload.

Key Features

Fits a wide range of Harley-Davidson models including FLHR, FLHT, and FLHX.
13.5 inch length with a black finish for a custom look.
Doublewall steel body construction for durability.
Nitrogen charged, multi-stage velocity sensitive valving for consistent damping.
Five-position cam style preload adjuster lets you fine-tune your ride.
Progressive rate springs offer improved performance across various loads.

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Product Details

When you're looking to dial in the suspension on your Harley-Davidson, especially models like the Road King, Street Glide, or Electra Glide, the Progressive 412 Series shocks offer a solid improvement. These shocks are built with a doublewall steel body, which is a well-built design that stands up to the demands of the road. Inside, they feature nitrogen-charged, multi-stage valving that works to provide consistent damping, smoothing out bumps and improving your overall ride quality.

What makes these shocks a popular choice is their adjustability. You get a five-position cam-style preload adjuster, allowing you to easily fine-tune the suspension to match your riding style or load. Whether you're carrying a passenger or just prefer a firmer feel, you can dial it in. The 13.5-inch length and black finish give your bike a distinct look while enhancing its handling characteristics. These are a great option for riders seeking a noticeable upgrade in comfort and control without breaking the bank.