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

The 5-position cam-style preload adjuster allows you to customize the suspension's firmness. You can adjust it to better suit your weight and riding conditions, whether you're riding solo or with a passenger and luggage.

Are these shocks filled with nitrogen or just air?

These shocks are high-pressure gas charged, which typically means they are filled with nitrogen. This helps maintain consistent damping performance by preventing oil and gas from mixing.

What is the difference between Standard and Heavy-Duty springs?

While not specified for this exact part number, Progressive typically offers Standard springs for general use and Heavy-Duty springs for riders who carry heavier loads or prefer a firmer ride. Check the specific product options for availability.

Progressive 412 Series Shocks 12.5in Black

Name: Progressive Harley 412 Series Shocks 12.5in - Black
Brand: Progressive
Price: 379.95 USD
Availability: InStock

Progressive Harley 412 Series Shocks 12.5in - Black

$379.95

Only 7 left in stock

Progressive 412 Series Shocks 12.5in - Black. Features a doublewall steel body and 5-position preload adjuster for improved ride quality.

Key Features

Fits a wide range of Harley-Davidson motorcycles from the 1980s through the mid-2000s.
All-steel double-wall damper construction offers durability.
High-pressure gas charged for consistent damping performance.
Multistage velocity-sensitive valving helps smooth out the ride.
Features a 5-position cam-style preload adjuster to fine-tune your suspension.
12.5-inch length with a black finish.

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Product Details

Starting with a doublewall steel body construction, these Progressive 412 Series shocks are built to last. They use a high-pressure gas charge with multi-stage velocity-sensitive valving to provide smooth and consistent damping, which makes a noticeable difference in how your bike handles bumps and road imperfections. This is a solid option for riders looking to improve their motorcycle's suspension performance.

The 12.5-inch length and black finish give your bike a classic look, while the five-position cam-style preload adjuster lets you fine-tune the suspension. Whether you're carrying a lighter load or a heavier one, you can dial in the right amount of support. These shocks are designed to fit a wide range of Harley-Davidson models, including popular bikes like the Road King, Electra Glide, and Sportster models from the 1980s through the mid-2000s.

For those looking for a bit more customization, Progressive offers optional full show chrome covers and different spring colors and rates on select applications. These shocks are a well-built upgrade that offers a great balance of performance and value for your ride.