What makes these 'Heavy Duty' shocks different from standard ones?

The Heavy Duty versions include progressive rate springs specifically designed to handle increased loads, such as carrying a passenger or cargo, providing better support and a more controlled ride compared to standard springs.

How do I adjust the preload on these shocks?

These shocks feature a 5-position cam-style preload adjuster. You can rotate the cam mechanism to select the desired spring preload setting, allowing you to customize the suspension for your weight and riding conditions.

What is the benefit of nitrogen charging in these shocks?

Nitrogen charging helps maintain consistent damping performance by preventing oil and gas from mixing, which can lead to foaming. This ensures the shocks perform reliably and smoothly, even under demanding use.

Specifications

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

Progressive Triumph 412 Series Shocks 14.25in Heavy Duty - Black

Name: Progressive Triumph 412 Series Shocks 14.25in Heavy Duty - Black
Brand: Progressive
SKU: progressive-progressive-triumph-412-series-shocks-14-25in-heavy-duty-black-t14-669155
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 - Black. Improve your motorcycle's suspension with durable steel construction and adjustable preload.

Key Features

Fits select Triumph motorcycles with a 14.25-inch mounting length.
Heavy Duty progressive rate springs in black help manage heavier loads and provide a more controlled ride.
All-steel doublewall damper body offers robust construction for long-term durability.
High-pressure gas charged for consistent damping performance across various conditions.
Features a 5-position cam-style preload adjuster to fine-tune suspension settings for rider weight and load.

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About this part

Product Details

When you're looking to get more out of your motorcycle's suspension, especially if you're carrying extra weight or just want a more controlled ride, the Progressive 412 Series Heavy Duty shocks are a solid option. These shocks are built to handle the demands of daily riding and heavier loads, offering a noticeable improvement over stock suspension components.

The doublewall steel body construction is well-built and durable, designed to last. Inside, they use nitrogen-charged, multi-stage valving that responds to changes in speed, ensuring smooth and consistent damping whether you're cruising or hitting bumps. You can also easily tune the ride to your liking with the five-position cam-style preload adjuster. This lets you dial in the right amount of support for your weight and riding style, from a lighter rider to a heavier load.

These Heavy Duty versions come with progressive rate springs, available in black, to match your bike's look. They are designed as a direct fit for many Triumph models, making the upgrade straightforward.