What makes these shocks 'Heavy Duty'?

The Heavy Duty designation typically refers to a more robust spring rate and damping characteristics designed to handle heavier loads or more demanding riding conditions compared to standard models.

How do I adjust the preload on these shocks?

These shocks feature a 5-position cam-style preload adjuster. You'll typically rotate the cam mechanism to select your desired preload setting, which affects how the suspension responds to weight.

What is the benefit of nitrogen charging?

Nitrogen charging helps prevent oil cavitation and foaming under high temperatures and pressures. This leads to more consistent damping performance, especially during extended use or aggressive riding.

Specifications

Brand: Progressive
Part #: 412-4058C
UPC: 412-4058C

Progressive Triumph 412 Series Shocks 14.25in Heavy Duty - Chrome

Name: Progressive Triumph 412 Series Shocks 14.25in Heavy Duty - Chrome
Brand: Progressive
SKU: progressive-progressive-triumph-412-series-shocks-14-25in-heavy-duty-chrome-t14-669156
Price: 379.95 USD
Availability: BackOrder

$379.95

On Backorder

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

Progressive 412 Series Heavy Duty Shocks 14.25in Chrome. Offers improved suspension performance with a durable doublewall steel body and adjustable preload.

Key Features

Fits: Progressive 412 Series Shocks 14.25in Heavy Duty - Chrome
Features a durable doublewall steel body construction.
Nitrogen charged with multi-stage, velocity-sensitive valving for consistent damping.
Includes a 5-position cam-style preload adjuster for ride customization.
Equipped with progressive rate springs in a chrome finish.

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About this part

Product Details

Progressive is known for making solid suspension components that offer a noticeable improvement over stock. These 412 Series shocks are a prime example, designed to give your ride a smoother, more consistent feel. They measure 14.25 inches long and are built in a Heavy-Duty configuration, featuring a doublewall steel body that's built to last.

Inside, these shocks use nitrogen-charged damping with multi-staged, velocity-sensitive valving. This setup helps maintain consistent damping performance, whether you're cruising or hitting rougher patches. You can also fine-tune your ride using the 5-position cam-style preload adjuster, making it easy to dial in the right setting for your weight and riding style.

These shocks come with progressive rate springs, available in chrome or black, and this particular model features a bright chrome finish. They are a well-built option for riders looking for a reliable upgrade to their suspension.