Progressive 412 Series shocks deliver consistent damping and adjustability for Harley-Davidson riders of all sizes. Double-wall steel construction with nitrogen-charged, multi-stage velocity-sensitive valving provides smooth suspension performance, while a 5-position preload adjuster lets you dial in comfort whether you're a light or heavy rider.
Features
- Double-wall steel damper body
- Multi-stage velocity-sensitive damping
- High-pressure nitrogen gas charging
- 5-position cam-style preload adjuster
- Standard or Heavy-Duty progressive rate springs
- Optional Show Chrome covers on select models
Specifications
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Brand: Progressive
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Manufacturer Part #: 412-4078C
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Category: Suspension / Shocks and Struts
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Weight: 10.1 lb
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WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov
Fitment
Fits Harley-Davidson models. Verify your specific year and model on the manufacturer's fitment chart before ordering.
Frequently Asked Questions
Can I adjust the preload on these shocks?
Yes — the 5-position cam-style preload adjuster lets you tune stiffness for light to heavy riders without tools.
What's the difference between Standard and Heavy-Duty springs?
Heavy-Duty springs support heavier riders or extra load. Standard springs work for most riders. Choose based on your weight and typical passenger/cargo load.
Do these come with chrome covers?
Standard 412s ship bare. Show Chrome covers are optional on select applications — check fitment details for your model.
How do nitrogen-charged shocks perform?
Nitrogen charging maintains consistent damping under all riding conditions and temperatures, preventing fade during heavy braking or extended riding.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov