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The Progressive Suspension 412 Series Shock is designed specifically for Harley Dyna models, providing a cost-effective upgrade to enhance your motorcycle's suspension performance. Its simple yet durable construction ensures reliable operation and improved ride quality. The shock features a five-position cam-style spring load preload adjuster, allowing you to easily fine-tune your ride for comfort or performance depending on your riding conditions. Whether you're cruising or tackling more demanding terrains, this adjuster helps you customize your suspension with ease. Made in the USA, the shocks are constructed with high-quality materials and are measured center-to-center eyelet to eyelet, ensuring compatibility and consistent performance. Some models are approved for road use, but it's important to refer to the latest certification for current listing status. This shock comes with a chrome cover, but multiple style options are available, including black covers, springs, and end caps, enabling you to match your bike's aesthetic preferences. When installing on '86-'15 XL models, modifications such as spacing the chain or belt guard may be necessary to ensure proper clearance. Slight variations in shock length can influence steering characteristics; a longer shock may provide quicker steering, while a shorter one can slow the steering response. Heavy-duty applications are recommended for bikes frequently operated near or at maximum load ratings. Before installing shocks that differ from OEM length, verify that your wheel travel and clearance—such as swingarm, axle, exhaust, and chain or belt guard—are not compromised to avoid contact issues. Overall, the Progressive Suspension 412 Shock offers a reliable, adjustable suspension upgrade suitable for a range of riding styles and load conditions, ensuring enhanced handling and rider comfort.
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