Progressive 412 Series shocks deliver consistent suspension 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 practical upgrade for any Harley-Davidson.
Features
- Double-wall steel damper construction
- High-pressure nitrogen charged for consistent damping
- Multi-stage velocity-sensitive valving
- 5-position cam-style preload adjuster
- Standard or Heavy-Duty progressive rate spring options
- Chrome or black finish available
- Optional show chrome covers on select models
Specifications
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Brand: Progressive
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Manufacturer Part #: 412-4045C
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Category: Suspension / Shocks and Struts
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Weight: 10.5 lb
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California Prop 65: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
Fitment
Fits Harley-Davidson motorcycles. Confirm your specific model and year before ordering to ensure proper application.
Frequently Asked Questions
Can I adjust these shocks for my weight?
Yes — the 5-position cam-style preload adjuster lets you dial in damping for light, medium, or heavy riders.
What's the difference between Standard and Heavy-Duty springs?
Standard springs suit average riders; Heavy-Duty springs are stiffer for heavier riders or two-up touring.
Do these come with chrome covers?
Standard models ship without covers. Optional show chrome covers are available for select Harley applications.
Is installation difficult?
Shock installation requires removing the old shocks and bolting on the new ones — a job best handled by a shop or experienced DIY mechanic.
Will these improve my ride quality?
The nitrogen charge and velocity-sensitive valving provide smoother, more consistent damping than worn factory shocks across a wider range of road surfaces.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov