About Progressive
Progressive Suspension has focused exclusively on American V-twin suspension since 1982, and its Monotube fork cartridges and 400/970/970G shock series are among the most common upgrades on baggers and Softails. For most riders the stock rear shock is the single worst part on the bike — this is the fix.
Progressive 412 Series shocks deliver smooth, consistent damping for Harley-Davidson models through a nitrogen-charged, multi-stage velocity-sensitive design within a durable double-wall steel body. A five-position cam preload adjuster allows you to dial in the ride for your specific weight and riding style, ensuring optimal comfort and control.
Why riders pick this
- Durable double-wall steel damper body
- Nitrogen-charged, multi-stage valving
- 5-position cam-style preload adjustment
- Standard or heavy-duty spring options
- Available in chrome or black finishes
Enhance the ride quality of your Harley-Davidson with the proven performance of Progressive 412 Series shocks. These shocks are built for the long haul, featuring a robust double-wall steel damper body that houses advanced nitrogen-charged, multi-stage velocity-sensitive valving. This sophisticated damping system ensures a consistently smooth and controlled ride, adapting seamlessly to varying road conditions and demands.
Refined Damping, Personalized Control
- Durable double-wall steel damper body provides exceptional strength and longevity
- Nitrogen-charged, multi-stage velocity-sensitive valving ensures consistent damping
- 5-position cam-style preload adjuster for quick and easy ride tuning
- Available with standard or heavy-duty progressive-rate spring options
- Choose between classic chrome or sleek black finish to match your bike's aesthetic
Tune Your V-Twin's Suspension
The 412 Series shocks are designed to put you in control of your Harley-Davidson's suspension. With the intuitive 5-position cam preload adjuster, you can effortlessly fine-tune the damping to match your body weight, riding style, and any additional load from passengers or luggage. This adjustability is vital for achieving the perfect balance of comfort and performance, ensuring your V-twin handles predictably and smoothly on every journey. For a complete suspension overhaul, consider pairing these rear shocks with a performance front fork kit.
Specifications
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Brand: Progressive
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Manufacturer Part #: 412-4065B
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Category: Suspension / Shocks and Struts
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Weight: 9.6 lb
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WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov
Common questions
Can I adjust the ride height or stiffness?
Yes, the 5-position cam preload adjuster allows you to tune the damping and stiffness to match your weight and riding style, effectively adjusting the sag and feel of the ride.
Do these shocks come with different spring options?
Yes, you can choose between standard or heavy-duty progressive-rate spring options to best suit your riding preferences and load requirements.
Are optional show chrome covers available?
Yes, optional full Show Chrome covers are available on select models to further enhance the aesthetic of your Harley-Davidson's rear suspension.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.