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The Progressive Suspension 412 Series Shock (Part Number: 412-4030B) is a reliable upgrade designed specifically for Harley-Davidson FL and FX models, offering improved ride quality and suspension performance. Constructed with durability in mind, these shocks feature a simple yet robust design that makes them a cost-effective enhancement for your motorcycle. The black finish adds a sleek, understated look that complements a range of bike styles. These shocks are built with a five-position cam-style spring preload adjuster, allowing riders to easily dial in their preferred ride firmness for optimal comfort and handling. They are suitable for a variety of riding conditions and are approved for road use, with some models featuring show-chrome or black covers, springs, and end caps to match your aesthetic preferences. Made in the USA, these shocks are measured from center-of-eyelet to center-of-eyelet, ensuring precise fitment. When installing on '86-'15 XL models, modifications such as spacing the chain or belt guard may be necessary to ensure proper clearance. Slightly longer shocks can alter the head angle, resulting in quicker steering, while shorter shocks may cause a slower steering response. Heavy-duty applications are recommended for bikes operated near maximum load ratings more than 50% of the time. Before purchasing, confirm that your wheel travel can accommodate shocks of different lengths without causing clearance issues like contact with the exhaust, swingarm, or tires. Overall, the Progressive Suspension 412 Series Shock provides a versatile, durable, and customizable suspension upgrade to improve your Harley-Davidson's ride quality and handling.
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