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

The 5-position cam-style preload adjuster allows you to easily modify the suspension's stiffness. This lets you dial in the ride to suit your weight, riding style, or if you're carrying extra cargo like luggage or a passenger.

Are these shocks nitrogen charged?

Yes, these shocks feature high-pressure gas charging with nitrogen. This helps maintain consistent damping performance by preventing oil cavitation, especially under demanding riding conditions.

What makes the spring rate 'progressive'?

A progressive rate spring means the spring's stiffness increases as it's compressed. This allows for a softer initial feel for comfort over small bumps, while becoming stiffer under heavier loads or during hard cornering for better control.

Progressive 412 Series Shocks Chrome 12.5in | 412-4219C

Name: Progressive Cruiser 412 Series Shocks 12.5in - Chrome
Brand: Progressive
Price: 379.95 USD
Availability: InStock

Progressive Cruiser 412 Series Shocks 12.5in - Chrome

$379.95

On Backorder — Expected to ship by Apr 5, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Progressive Cruiser 412 Series Shocks 12.5in - Chrome. Features a doublewall steel body and 5-position preload adjuster for improved suspension performance.

Key Features

Fits multiple Honda, Kawasaki, and Triumph cruiser models.
All steel double wall damper construction for durability.
Nitrogen charged, multi-stage velocity sensitive valving for consistent damping.
Five-position cam style preload adjuster lets you fine-tune your ride.
12.5 inch length with a chrome finish and progressive rate springs.

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Will this fit your vehicle?

Product Details

Starting with a doublewall steel body construction, these Progressive 412 Series shocks are built to last. They're designed to offer an improvement in your motorcycle's suspension performance, providing smoother and more consistent damping thanks to nitrogen-charged, multi-stage velocity-sensitive valving. This setup helps keep your ride stable, whether you're cruising on the highway or navigating city streets.

The 412 Series shocks are a solid option for a range of cruiser motorcycles, including models like the Honda Valkyrie, Kawasaki Vulcan 1500/1600, and Triumph Rocket III. You can fine-tune your ride with the five-position cam-style preload adjuster, allowing you to dial in the suspension to match your riding style or cargo load. This adjustability means you can achieve a comfortable setup whether you're riding solo or carrying a passenger and gear.

With their chrome finish and progressive rate springs, these shocks not only perform well but also add a custom look to your bike. They are a well-built component that offers a noticeable upgrade over stock suspension, providing a more controlled and comfortable experience mile after mile.