What is the benefit of adjustable rebound damping?

Adjustable rebound damping controls how quickly the shock absorber extends after being compressed. Tuning this setting helps prevent the suspension from feeling too bouncy or too stiff, allowing you to match it to your riding style and road conditions.

How do I adjust the spring preload on these shocks?

The spring preload on these Progressive 990 Series shocks is designed to be adjusted by hand. You can turn the threaded collar at the bottom of the spring to increase or decrease the tension on the spring, which affects how much sag your motorcycle has.

What does 'high and low-speed compression damping' adjustment mean?

High-speed compression damping controls how the shock reacts to sharp, quick impacts like hitting a pothole. Low-speed compression damping manages the suspension's response to slower, more sustained compressions, such as during braking or cornering. Having both adjustable allows for very precise tuning of your ride.

Specifications

Brand: Progressive
Part #: 990-1010
UPC: 990-1010

Progressive Harley Dyna 990 Series Shocks 12.5in - Black

Name: Progressive Harley Dyna 990 Series Shocks 12.5in - Black
Brand: Progressive
SKU: progressive-progressive-harley-dyna-990-series-shocks-12-5in-black-t14-669272
Price: 1896.95 USD
Availability: BackOrder

$1896.95

On Backorder

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

Progressive Harley Dyna 990 Series Shocks 12.5in - Black. Get complete adjustability for your ride.

Key Features

Fits Harley-Davidson FXD Dyna Super Glide, FXDC Super Glide Custom, FXDL Dyna Low Rider, FXDS-Conv Dyna Convertible, FXDWG Dyna Wide Glide, FXDX Dyna Super Glide Sport, and FXDXT Dyna Super Glide T-Sport models.
Features adjustable rebound damping for controlling the speed of the spring return.
Offers adjustable high and low-speed compression damping to fine-tune suspension response over different types of bumps.
Threaded hand-adjustable spring preload allows for easy adjustments to rider sag.
Includes a 0.4-inch adjustable height eyelet to slightly alter the motorcycle's stance.
High-pressure gas monotube design with deflective disc damping for consistent performance.

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About this part

Product Details

If you're looking to dial in the suspension on your Harley Dyna for aggressive riding, these Progressive 990 Series shocks are a serious upgrade. They offer a level of adjustability you won't find on most V-twin shocks, letting you fine-tune your ride for everything from spirited canyon carving to comfortable cruising. These shocks fit a wide range of Dyna models, including the Super Glide, Low Rider, and Wide Glide, among others.

What sets these shocks apart is the complete adjustability. You can fine-tune the rebound damping, and both high and low-speed compression damping using easily accessible knobs. Plus, the spring preload is adjustable by hand, and there's even a 0.4-inch adjustable height eyelet to let you slightly alter your bike's stance and geometry. Inside, a high-pressure monotube design with deflective disc damping ensures consistent performance. This setup is routed through two separate circuits, providing a stable feel throughout the entire shock stroke, which really helps with stability and control, especially when you're pushing the bike. The lightweight aluminum body helps keep unsprung weight down, and the captured jounce bumper is designed to smooth out and control those hard bottoming events.

Each shock is hand-built, tuned, and dyno-tested right here in our facility to ensure they meet our standards. This attention to detail means you're getting a well-built, reliable shock that's ready to perform. If you're serious about getting the most out of your Dyna's suspension, these shocks are a solid choice.