Progressive 412 Series shocks deliver reliable suspension performance with a durable double-wall steel body and nitrogen-charged, velocity-sensitive damping. The five-position preload adjuster lets you tune ride height and stiffness for your weight and riding style.
Features
- Double-wall steel damper construction
- High-pressure nitrogen gas charged
- Multi-stage velocity-sensitive damping
- 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 #: 412-4056C
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Category: Suspension / Shocks and Struts
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Weight: 11.15 lb
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California Prop 65: Contains chemicals known to cause cancer and reproductive harm. Visit www.P65Warnings.ca.gov for more information.
Fitment
Fits Harley-Davidson models. Verify your specific year and model before ordering, as shock applications vary by chassis and rear suspension type.
Frequently Asked Questions
Can I adjust the ride height or stiffness?
Yes — the 5-position cam-style preload adjuster lets you dial in stiffness and height to match your weight and riding preferences.
What's the difference between Standard and Heavy-Duty springs?
Heavy-Duty springs are rated for heavier riders or two-up riding. Standard springs suit lighter riders. Choose based on your typical load.
Do these come with Show Chrome covers?
Show Chrome covers are optional on select applications. Check fitment details for your model to see if covers are available.
How do nitrogen-charged shocks differ from conventional shocks?
Gas-charged shocks maintain consistent damping under heat and repeated compression, preventing fade that can occur with non-pressurized designs.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov