Progressive 412 Series shocks deliver durable, adjustable suspension for Harley-Davidson motorcycles with a proven doublewall steel design and multi-stage velocity-sensitive damping. The five-position preload adjuster lets you tune for your weight and riding style, while high-pressure nitrogen charging ensures consistent performance mile after mile.
Features
- Doublewall steel damper body
- Multi-stage velocity-sensitive damping
- High-pressure nitrogen gas charging
- 5-position cam-style preload adjuster
- Progressive or heavy-duty spring rates available
- Chrome or black finish options
- Optional show chrome covers on select models
Specifications
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Brand: Progressive
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Manufacturer Part #: 412-4002C
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Weight: 10.5 lb
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Category: Suspension / Shocks and Struts
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Fitment: Harley-Davidson
Fitment
Fits Harley-Davidson motorcycles. Verify your specific model year and chassis with Progressive before ordering, as shock applications vary by year.
Frequently Asked Questions
Can I adjust the preload myself?
Yes — the 5-position cam-style preload adjuster is tool-free and lets you tune for your weight without removing the shock.
What's the difference between standard and heavy-duty springs?
Heavy-duty springs provide stiffer support for heavier riders or loaded touring. Standard springs work for lighter riders.
Do these come with chrome covers?
The base 412s ship without covers. Show chrome covers are available as an option on select Harley models — check fitment.
How long do these shocks last?
Progressive 412s are known for reliability and consistent performance for years. Nitrogen charging maintains damping even as seals age.
Will these reduce my bike's seat height?
Shock height and ride geometry depend on your specific model. Verify fitment and ride-height impact with Progressive before purchase.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov