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Designed specifically for Harley-Davidson models, the Progressive Suspension 412 Series Shock offers a simple yet durable upgrade to your motorcycle's suspension system. Constructed with quality materials, these shocks are engineered to enhance ride comfort and handling without breaking the bank. The black finish provides a sleek appearance that complements various motorcycle styles, making it a versatile choice for Harley riders seeking improved performance. All shocks are measured from center-of-eyelet to center-of-eyelet, ensuring accurate fitment for your bike. The 412 Series features a five-position cam-style spring preload adjuster, allowing riders to easily dial in their preferred ride height and firmness for varying loads and riding conditions. This adjustability ensures you can customize your suspension for a smoother ride or sharper handling depending on your preferences. Some shocks listed are approved for road use; always consult the most recent certification for current compliance details. When installing shocks on ’86-’15 XL models, it might be necessary to modify or space the chain or belt guard to ensure proper clearance. Slight variations in shock length can influence steering characteristics; a longer shock may provide quicker steering, while a shorter shock can result in slower response. For heavy-duty applications, it is recommended to opt for shocks rated to handle the maximum load capacity over 50% of the time, ensuring durability under demanding conditions. Before choosing shocks that differ from the OEM length, verify that your wheel travel and clearances—such as swingarm, axle, exhaust, chain or belt guard, and tire contact—are adequate to prevent interference or damage. Made in the USA, the Progressive Suspension 412 Series shocks are a reliable upgrade for riders seeking improved ride quality, handling, and customization options for their Harley motorcycle.
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