Progressive Suspension 412 Series Shock - 12.5 inch Heavy Duty Black for Harley-Davidson - Model 412-4019B

The Progressive Suspension 412 Series Shock provides a durable and cost-effective upgrade for Harley-Davidson models, enhancing ride comfort and handling. Designed with simplicity and longevity in mind, this shock features a five-position cam-style spring preload adjuster that allows riders to easily customize their suspension settings for different riding conditions and loads. Its heavy-duty construction makes it suitable for riders who frequently operate near the motorcycle's maximum load capacity, ensuring reliable performance even under demanding conditions.
Made in the USA, the 412 Series Shock is available with various style options, including full show-chrome or black covers, as well as chrome or black springs and end caps, enabling riders to match their bike's aesthetic. All shocks are measured from eyelet to eyelet, ensuring proper fitment on a range of Harley models. Installation may require modifications, such as spacing the chain or belt guard on '86-'15 XL models, to ensure proper clearance. Slight length variations—either longer or shorter than stock—can influence steering response by altering the head angle; a longer shock may quicken steering, while a shorter one can slow it down.
Before installing shocks that differ from OEM length, riders should verify that wheel travel and clearance around the swingarm, axle, exhaust, and tires are maintained to prevent contact issues. Heavy-duty applications are recommended for bikes regularly operated at or near maximum load, providing added durability and stability. Whether upgrading for performance or style, the Progressive Suspension 412 Series Shock offers a reliable and customizable solution for Harley enthusiasts seeking improved ride quality.

Features:

• Five-position cam-style spring preload adjuster for easy customization

• Heavy-duty construction suitable for high load applications

• Made in the USA with various style options including chrome and black finishes

• Center-to-center measurement ensures proper fitment on Harley models

• Designed to improve ride comfort and handling with minimal modifications