Progressive Suspension, a renowned aftermarket bike suspension manufacturer, offers top-tier, reliable shocks. Their 412 series is a high-performance, affordable option. Understanding the importance of quality components, riders seek the best shocks for their motorcycles. Progressive Suspension 412 shocks provide excellent value, known for their state-of-the-art testing, precision design, and high-quality construction. Featuring a durable, simple design with a preload adjuster for personalized rides, these shocks boast a double-wall steel body, nitrogen charging, and multi-staged velocity-sensitive valving. Available in heavy-duty or standard versions, they come with a five-position cam-style preload adjuster, making them easy to adjust. They automatically adapt to riding conditions, are available in black and chrome finishes, and come with necessary installation accessories. Made in the USA, they carry a 1-year warranty. Fitting various Harley-Davidson models, they are a no-brainer for improving ride quality.