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. Experience a significant upgrade in ride quality with Progressive 412 Series Shocks for your Harley-Davidson. These shocks are engineered for consistent damping and feature adjustable preload to suit any rider. Why riders pick this Consistent damping performance Durable double-wall steel construction Nitrogen-charged for fade resistance 5-position cam-style preload adjuster Available with progressive-rate springs Built with a durable double-wall steel construction and nitrogen-charged, multi-stage velocity-sensitive valving, the 412 Series handles diverse riding conditions without fade. This makes them a reliable choice for both light and heavy riders seeking enhanced control and comfort. Consistent Performance, Easy Adjustment Durable double-wall steel damper body High-pressure nitrogen gas charging for fade-free performance Multi-stage velocity-sensitive valving for optimal damping 5-position cam-style preload adjuster for tool-free tuning Available with progressive-rate spring options in chrome or black Upgrade Your Foundation The 412 Series shocks provide an excellent balance of performance and value, making them a popular choice for replacing factory units. The ability to quickly adjust preload means you can optimize your suspension for solo rides, two-up cruising, or loaded touring. Always confirm the specific model year and frame type of your Harley-Davidson to ensure proper fitment before purchasing. Specifications Brand: Progressive Manufacturer Part #: 412-4005B Weight: 8.9 lb Category: Suspension / Shocks and Struts California Prop 65: Cancer and Reproductive Harm — www.P65Warnings.ca.gov Common questions Can I adjust the preload on these shocks? Yes, the 5-position cam-style adjuster allows you to easily dial preload up or down to match your weight and riding style without any special tools. Do these shocks come with covers? Standard versions typically do not include covers, but optional show chrome covers are available for select models if you desire a different aesthetic. Are these shocks a direct replacement for my stock units? Progressive 412 Series shocks are designed as a direct replacement for many Harley-Davidson models. However, it's crucial to check the specific model year and frame type to ensure compatibility with your application. 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. {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://vtwinbikers.com"},{"@type":"ListItem","position":2,"name":"Shocks and Struts","item":"https://vtwinbikers.com/collections/all"},{"@type":"ListItem","position":3,"name":"Progressive","item":"https://vtwinbikers.com/collections/progressive"},{"@type":"ListItem","position":4,"name":"Progressive 412 Series Shocks - Harley-Davidson","item":"https://vtwinbikers.com/products/progressive-412-shocks-harley-davidson-2"}]} {"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Can I adjust the preload on these shocks?","acceptedAnswer":{"@type":"Answer","text":"Yes, the 5-position cam-style adjuster allows you to easily dial preload up or down to match your weight and riding style without any special tools."}},{"@type":"Question","name":"Do these shocks come with covers?","acceptedAnswer":{"@type":"Answer","text":"Standard versions typically do not include covers, but optional show chrome covers are available for select models if you desire a different aesthetic."}},{"@type":"Question","name":"Are these shocks a direct replacement for my stock units?","acceptedAnswer":{"@type":"Answer","text":"Progressive 412 Series shocks are designed as a direct replacement for many Harley-Davidson models. However, it's crucial to check the specific model year and frame type to ensure compatibility with your application."}}]}
