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

The 5-position cam style preload adjuster allows you to easily modify the suspension's stiffness. This lets you dial in the ride to suit your weight and riding conditions, whether you're riding solo or with a passenger and luggage.

What does 'progressive rate springs' mean for my ride?

Progressive rate springs are designed to offer a softer initial response that stiffens as they are compressed. This helps provide a comfortable ride over smaller bumps while still offering good support during harder cornering or when carrying extra weight.

Are these shocks nitrogen charged?

Yes, these shocks feature high-pressure gas charging, typically with nitrogen. This helps prevent the oil and gas from mixing, which can lead to foaming and reduced damping performance, especially under heavy use.

Progressive Harley 412 Series Shocks 11.5in - Black

Specifications

Brand: Progressive
Part #: 412-4075B
UPC: 412-4075B

Progressive Harley 412 Series Shocks 11.5in - Black

Name: Progressive Harley 412 Series Shocks 11.5in - Black
Brand: Progressive
Price: 379.95 USD
Availability: InStock

$379.95

On Backorder — Expected to ship by Jun 20, 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 11.5in - Black. Improves suspension performance with durable construction and adjustable preload.

Key Features

Fits many Harley-Davidson models including Road King, Street Glide, and Road Glide.
All steel double wall damper construction for durability.
High-pressure gas charged for consistent damping performance.
Multistage velocity sensitive damping adjusts to road conditions.
5-position cam style preload adjuster lets you dial in your ride.
Progressive rate springs in black finish for improved handling and comfort.

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Will this fit your vehicle?

Product Details

Starting with the all-steel double wall damper construction, these Progressive 412 Series shocks are built to last. This robust design, combined with high-pressure gas charging, ensures consistent damping performance over time, giving you a smoother and more controlled ride. They are designed to be an improvement over stock suspension for a wide range of Harley-Davidson motorcycles, including models like the Road King, Street Glide, and Road Glide.

You can fine-tune your ride with the 5-position cam-style preload adjuster, allowing you to dial in the suspension whether you're carrying a light load or a heavy one. The progressive rate springs are available in black, matching the shock body, and are designed to work with the damping system for improved handling and comfort. These shocks offer a solid option for riders looking to enhance their motorcycle's suspension without breaking the bank.