What is the main benefit of the progressive rate springs?

Progressive rate springs offer a softer initial feel for improved comfort over small bumps. As the suspension compresses further, the spring rate increases, providing better support and control during harder riding or when carrying heavier loads.

How do I adjust the preload on these shocks?

These shocks feature a five-position cam-style preload adjuster. You can rotate the cam mechanism to select your desired preload setting, which changes how much the spring is compressed before you even start riding.

Are these shocks suitable for heavy riders or carrying a passenger?

Yes, the five-position preload adjuster allows you to increase the spring tension to better support heavier riders or a passenger, ensuring a more stable and controlled ride.

Progressive Harley 412 Series Shocks 12.0in - Black

Specifications

Brand: Progressive
Part #: 412-4013B
UPC: 412-4013B

Progressive Harley 412 Series Shocks 12.0in - Black

Name: Progressive Harley 412 Series Shocks 12.0in - Black
Brand: Progressive
Price: 379.95 USD
Availability: InStock

$379.95

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Progressive Harley 412 Series Shocks 12.0in - Black. Improve your ride with durable, gas-charged damping and adjustable preload.

Key Features

Fits a wide range of Harley-Davidson models from 1973-1986.
12.0 inch length for a specific stance and ride height.
Double-wall steel body construction for durability.
Nitrogen-charged, multi-stage velocity-sensitive valving for consistent damping.
Five-position cam-style preload adjuster allows for ride customization.
Progressive rate springs offer a balanced ride between comfort and control.

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Will this fit your vehicle?

Product Details

If you're looking to give your Harley-Davidson a more comfortable and controlled ride, these Progressive 412 Series shocks are a solid option. They're designed to be a direct replacement for many Harley models from the 70s and 80s, like the FX Super Glide or FLHTC Electra Glide Classic, offering a noticeable improvement over stock suspension. These shocks help smooth out bumps and keep your tires planted, making your ride more enjoyable on longer trips or just around town.

What makes these shocks work well is their well-built, double-wall steel body construction. Inside, they use nitrogen-charged, multi-stage valving that adjusts to your speed, providing consistent damping whether you're cruising or hitting rougher patches. You can also fine-tune the ride using the five-position cam-style preload adjuster, letting you dial in the firmness based on your weight or riding style. They come with progressive rate springs, which offer a softer initial feel that stiffens up as you compress the suspension, balancing comfort and control.

These 12-inch shocks come in a clean black finish, fitting right in with many custom builds. They're a popular choice because they offer a lot of performance and adjustability for the money, making them a great way to upgrade your bike's handling and comfort.