What makes the Progressive 412 Series shocks an improvement over stock?

The 412 Series shocks offer improved suspension performance through their durable double-wall steel body, nitrogen-charged damping system, and multi-stage valving. This combination provides smoother and more consistent control compared to many stock setups.

How do I adjust the ride with these shocks?

These shocks feature a 5-position cam-style preload adjuster. You can easily rotate the cam to set the spring tension, allowing you to fine-tune the suspension for different loads or riding preferences.

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

While these specific shocks come with standard progressive rate springs, Heavy-Duty options are available for select applications. Heavy-Duty springs are typically designed to support higher weight capacities or more aggressive riding conditions.

Progressive Harley 412 Series Shocks 13.5in - Chrome

Specifications

Brand: Progressive
Part #: 412-4018C
UPC: 412-4018C

Progressive Harley 412 Series Shocks 13.5in - Chrome

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

$379.95

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Fits 1958-1978 Harley-Davidson XLCH. Progressive 412 Series shocks improve suspension performance with a durable steel body and adjustable preload.

Key Features

Fits 1958-1978 Harley-Davidson XLCH.
Features a durable, double-wall steel body construction.
Nitrogen charged with multi-stage, velocity-sensitive valving for consistent damping.
Includes a 5-position cam-style preload adjuster to customize your ride.
Comes with progressive rate springs in a chrome finish.
Optional full show chrome covers are available for select applications.

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Fits this vehicle

Harley-Davidson XLCH 1958-1978

Product Details

When you're looking to give your 1958-1978 Harley-Davidson XLCH a more comfortable and controlled ride, the Progressive 412 Series shocks are a solid choice. These shocks are built to be an improvement over stock, offering smoother damping and better handling for your classic ride.

The double-wall steel body construction is well-built and houses a nitrogen-charged system with multi-stage, velocity-sensitive valving. This setup works to provide consistent damping, meaning you'll feel a more stable and predictable response from your suspension, whether you're cruising or carrying a load. You can also fine-tune the ride to your preference using the five-position cam-style preload adjuster, making it easy to dial in the right setup for your riding style and weight.

These shocks come with progressive rate springs in a bright chrome finish, and you can also opt for full show chrome covers for an even more polished look. They are designed as a direct fit for your Harley-Davidson XLCH, making installation straightforward.