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The Progressive Suspension 412 Series Shock (Part Number 412-4011B) is designed to enhance the suspension performance of Harley-Davidson models with a focus on durability and ride quality. Constructed with a simple yet robust design, this shock absorber offers an affordable upgrade for riders seeking improved handling and comfort. Featuring a five-position cam-style spring preload adjuster, it allows for quick and precise tuning to match individual riding preferences and load conditions, ensuring a tailored riding experience. Made in the USA, these shocks are built to meet high standards of quality and reliability, with options available in full show-chrome or black covers, springs, and end caps for customization to match your motorcycle's aesthetic.
Each shock is measured from center of eyelet to center of eyelet, ensuring compatibility with a variety of Harley models, particularly from 1986 to 2015 XL series. When installing these shocks, especially on certain models, it may be necessary to modify or space the chain or belt guard to clear the suspension components properly. Slight variations in shock length compared to stock can influence steering characteristics—longer shocks tend to provide quicker steering, while shorter shocks offer a slightly more relaxed feel. Heavy-duty applications are recommended for bikes that regularly operate near their maximum load capacity over 50% of the time, providing added strength and stability.
Before selecting shocks different from the original equipment, verify that your wheel travel and clearance areas—such as swingarm, axle, exhaust, chain or belt guard, and tires—are suitable to avoid contact issues. This ensures safe installation and optimal performance. Whether you seek an upgrade for daily riding or heavy-duty use, the Progressive Suspension 412 Series shocks are designed to deliver consistent performance, durability, and easy adjustment to improve your Harley's ride quality and handling.
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