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

The 5-position cam-style preload adjuster lets you dial in your ride. You can adjust the spring tension to match your weight or compensate for carrying a passenger or luggage, ensuring a more comfortable and stable ride.

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

Progressive rate springs offer a more comfortable ride by starting softer and becoming firmer as they are compressed. This means they absorb smaller bumps smoothly but provide more support during harder impacts or when carrying extra weight.

Are these shocks filled with gas?

Yes, these shocks are nitrogen charged. This high-pressure gas helps maintain consistent damping performance by preventing oil aeration, especially under demanding riding conditions.

Specifications

Brand: Progressive
Part #: 412-4048C
UPC: 412-4048C

Progressive Harley 412 Series Shocks 12.6in - Chrome

Name: Progressive Harley 412 Series Shocks 12.6in - Chrome
Brand: Progressive
SKU: progressive-progressive-harley-412-series-shocks-12-6in-chrome-t14-614017
Price: 379.95 USD
Availability: BackOrder

$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 12.6in - Chrome. Offers improved suspension performance with a durable, double-wall steel body.

Key Features

Fits 1995-2017 Harley-Davidson Dyna models.
Double-wall steel body construction for durability.
Nitrogen charged with multi-stage velocity-sensitive valving for consistent damping.
Five-position cam-style preload adjuster allows for ride customization.
Progressive rate springs are available in chrome or black.
12.6-inch length for a specific fitment.

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About this part

Product Details

Progressive is known for making suspension components that offer a noticeable improvement in ride quality and handling, and their 412 Series shocks are a prime example. These 12.6-inch chrome shocks are designed to fit a wide range of Harley-Davidson Dyna models, including popular bikes like the Street Bob, Fat Bob, and Dyna Low Rider. They replace your stock shocks to give you a smoother, more controlled ride, whether you're cruising around town or hitting the open road.

What makes these shocks a solid option is their simple yet strong construction. They feature a double-wall steel body that's built to last, housing a nitrogen-charged system with multi-stage valving. This setup ensures consistent damping performance, meaning the shocks react smoothly to bumps and road imperfections. You can also fine-tune your ride using the five-position cam-style preload adjuster, letting you set the suspension stiffness to match your weight and riding style, or to compensate for extra cargo.

These shocks come with progressive rate springs, available in chrome or black, to provide a comfortable ride that gets firmer as the suspension is compressed. If you're looking for a dependable upgrade that offers a better feel and improved handling for your Harley-Davidson Dyna, the 412 Series is a well-built choice.