Progressive 412 Series shocks deliver consistent damping performance with a durable double-wall steel body and nitrogen-charged, multi-stage velocity-sensitive valving. A five-position preload adjuster lets you tune the ride for your weight and riding style, making them a versatile upgrade for Harley-Davidson suspension.
Features
- Double-wall steel damper body
- High-pressure nitrogen gas charging
- Multi-stage velocity-sensitive damping
- 5-position cam-style preload adjuster
- Standard and Heavy-Duty progressive spring rates available
- Chrome or black finish options
- Optional chrome covers on select models
Specifications
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Brand: Progressive
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Manufacturer Part #: 412-4085B
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Category: Suspension / Shocks and Struts
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Weight: 10.8 lb
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WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov
Fitment
Fits Harley-Davidson motorcycles. Verify your specific model and year before ordering to ensure correct application.
Frequently Asked Questions
Can I adjust the ride height or stiffness?
Yes — the 5-position cam preload adjuster lets you dial in spring stiffness to match your weight and riding preference.
What's the difference between Standard and Heavy-Duty springs?
Heavy-Duty springs support more weight and are better for heavier riders or two-up touring. Standard springs work well for lighter riders.
Do these come with chrome covers?
Chrome Show covers are optional on select applications. Check your model fitment to see if they're available for your bike.
How do nitrogen-charged shocks improve performance?
Nitrogen pressurization maintains consistent damping across temperature and mileage changes, preventing fade under hard braking or cornering.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov