Progressive 990 Sport series shock for Harley-Davidson Dyna 990, featuring fully adjustable high and low speed compression, rebound damping, and preload via accessible knobs and hand-adjustable eyelet. Built with a high-pressure monotube and deflective disc damping for consistent feel and improved stability through the entire suspension stroke.
Features
- Adjustable High & Low Speed compression damping
- Adjustable rebound damping
- Adjustable preload by hand
- 0.4 in adjustable height eyelet
- High-pressure gas monotube design
- Deflective disc damping technology
- Lightweight aluminum body
- Linear rate coil spring
- Captured jounce bumper
Specifications
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Brand: Progressive
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Manufacturer Part #: 990-1010
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Category: Suspension / Shocks and Struts
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Weight: 10.45 lb
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WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov
Fitment
Fits Harley-Davidson Dyna 990 models.
Frequently Asked Questions
Can I adjust the ride height with these shocks?
Yes — the eyelet is adjustable over a 0.4 inch range, letting you dial in ride height to your preference.
How do I adjust compression damping?
High and Low Speed compression knobs are easily accessible on the shock body for on-the-bike tuning without tools.
Is preload adjustment difficult?
No — preload is adjusted by hand using the threaded collar on the eyelet, with no special tools required.
Will these improve handling compared to stock Dyna shocks?
The monotube design and deflective disc damping deliver more consistent damping through the stroke for better stability and performance.
Do I need new springs or can I reuse OEM springs?
These shocks come with a linear rate coil spring included — no need to purchase springs separately.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov