What is the main benefit of the progressive rate springs?

Progressive rate springs offer a more adaptable ride. They start softer for comfort over small bumps and stiffen up as they compress, providing better support during hard braking or when carrying extra weight.

How do I adjust the preload on these shocks?

These shocks feature a five-position cam-style preload adjuster. You can rotate the cam to select the desired spring tension to fine-tune your ride based on your weight and riding conditions.

Are these shocks sold individually or as a pair?

These shocks are sold as a pair, ensuring you have matching components for both sides of your motorcycle's rear suspension.

Progressive Harley 412 Series Shocks 12.0in - Chrome

Specifications

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

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 Jun 20, 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. Offers improved suspension performance with a durable, doublewall steel body and adjustable preload.

Key Features

Fits a wide range of Harley-Davidson models from 1973-1986.
Doublewall steel body construction offers durability.
Nitrogen charged, 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.
12.0 inch length with a chrome finish.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

Starting with a doublewall steel body construction, these Progressive 412 Series shocks are built to last. They feature nitrogen-charged, multi-stage velocity-sensitive valving, which means you get smooth and consistent damping performance. This design helps improve your motorcycle's suspension, making for a more comfortable ride whether you're cruising or carrying a load.

These shocks are a solid option for a wide range of Harley-Davidson models from the 1970s and 1980s, including popular bikes like the FX Super Glide and FLHTC Electra Glide Classic. The five-position cam-style preload adjuster lets you easily dial in your ride. You can set it for your weight or riding style, ensuring you get the most out of the progressive rate springs, which are available in chrome or black.

With a 12-inch length and a bright chrome finish, these shocks are designed to fit right and look great on your bike. They offer an improved suspension experience over stock, providing a noticeable difference in how your motorcycle handles.