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The Progressive Suspension 412 Series Shock (Part Number: 412-4205C) is engineered specifically for Harley-Davidson models, offering an affordable upgrade to enhance your motorcycle's suspension performance. Constructed with durability in mind, these shocks feature a simple yet robust design that ensures long-lasting reliability on the road. The five-position cam-style spring preload adjuster allows riders to fine-tune their ride height and firmness easily, providing a customizable riding experience tailored to individual preferences and load conditions.
Made in the USA, the 412 Series shocks are available in various styles, including full show-chrome or black covers, with options for chrome or black springs and end caps. These shocks are measured from center-of-eyelet to center-of-eyelet, ensuring compatibility with a wide range of Harley models. Some shocks are road-approved, but users should verify current certification details to confirm suitability for street use.
When installing shocks on Harley models from 1986 to 2015, modifications such as spacing or altering the chain or belt guard may be necessary to ensure proper clearance. Slightly longer shocks can influence steering geometry, resulting in a quicker turn-in, while shorter shocks may slow steering response. Heavy-duty applications are recommended for bikes frequently operated near maximum load ratings, providing additional strength and stability under demanding conditions.
Before replacing OEM shocks with different lengths, it is essential to confirm that wheel travel adjustments do not interfere with other components like the swingarm, exhaust, or tires. Proper installation and compatibility checks will optimize your motorcycle's handling and ride quality, ensuring a safe and comfortable experience on the road.
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