Progressive 412 Series shocks deliver consistent damping for Harley-Davidson cruisers through nitrogen-charged, velocity-sensitive valving in a double-wall steel body. A five-position preload adjuster lets you customize the ride for your weight and riding style without tools.
Features
- Double-wall steel damper construction
- High-pressure nitrogen gas charge
- Multi-stage velocity-sensitive damping
- 5-position cam-style preload adjuster
- Available in standard or heavy-duty progressive springs
- 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 #: 412-4009B
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Category: Suspension / Shocks and Struts
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Weight: 9.9 lb
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WARNING: Cancer and Reproductive Harm — California Prop 65
Fitment
Fits Harley-Davidson cruiser models. Verify your specific model year and frame type before ordering to ensure compatibility.
Frequently Asked Questions
Do I need to adjust the preload when I install these shocks?
Yes — use the 5-position cam adjuster to dial preload for your body weight and riding style. Light riders use lower positions; heavier riders benefit from stiffer settings.
What's the difference between standard and heavy-duty spring rates?
Heavy-duty springs provide more support for heavier riders or carrying a passenger. Standard springs suit lighter riders and solo touring.
Can I get these in chrome?
Yes — the shocks are available in chrome, black, or with optional Show Chrome covers on select Harley models.
Are these shocks rebuildable?
These are sealed cartridge units. When they wear out, replacement is the recommended service.
Will these improve my ride compared to stock shocks?
Yes — the velocity-sensitive damping and nitrogen charge provide smoother, more consistent performance than most OEM Harley shocks.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov