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

The 5-position cam-style preload adjuster lets you easily change how stiff the suspension feels. You can set it to accommodate different rider weights or riding conditions, like carrying a passenger or luggage.

Are these shocks filled with gas?

Yes, these shocks are high-pressure gas charged. This helps maintain consistent damping performance and prevents the fluid from foaming, especially during hard riding.

What is the difference between standard and heavy-duty springs?

Standard springs are designed for average rider weight and typical riding conditions. Heavy-duty springs are intended for riders who carry heavier loads or prefer a firmer suspension feel.

Progressive Harley 412 Series Shocks 12.0in - Chrome

Specifications

Brand: Progressive
Part #: 412-4050C
UPC: 412-4050C

Progressive Harley 412 Series Shocks 12.0in - Chrome

Name: Progressive Harley 412 Series Shocks 12.0in - Chrome
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 12.0in - Chrome. Improve your ride with these durable, gas-charged shocks featuring adjustable preload.

Key Features

Fits a wide range of Harley-Davidson motorcycles, including models like the Road King, Electra Glide, and Sportster.
12.0 inch length provides a classic look and feel for many applications.
Double-wall steel body construction offers durability.
Nitrogen charged and multi-stage velocity sensitive valving for consistent damping.
Five-position cam style preload adjuster allows you to fine-tune your ride.
Progressive rate springs are available in chrome or black.

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Will this fit your vehicle?

Product Details

If you're looking to give your Harley-Davidson a smoother, more controlled ride, these Progressive 412 Series shocks are a solid option. They're designed to replace your stock shocks and offer an improved feel for a wide range of Harley models, from Road Kings to Sportsters. The 12-inch length provides a classic stance and works well for many applications.

What makes these shocks a good value is their simple yet effective construction. They feature a double-wall steel body with nitrogen-charged, multi-stage valving that helps deliver consistent damping performance over bumps and rough roads. You can also dial in your preferred ride by using the five-position cam-style preload adjuster, which is handy whether you're carrying extra gear or riding two-up. The chrome finish and progressive rate springs give your bike a sharp look while enhancing suspension performance.

These shocks are a popular choice for riders looking for a noticeable improvement over stock without breaking the bank. They fit a broad spectrum of Harley-Davidson motorcycles, so be sure to check the fitment list to confirm compatibility with your specific model.