Progressive Suspension 412 Series Shock - 12 Inch Standard Black for Harley FL/FX Models

The Progressive Suspension 412 Series Shock (Part Number: 412-4013B) is designed specifically for Harley-Davidson FL and FX models, offering an affordable upgrade to enhance your motorcycle's suspension performance. Built with durability in mind, this shock features a straightforward design that simplifies installation and adjustment. Its robust construction ensures long-lasting reliability, making it a practical choice for riders seeking improved comfort and handling on the road. The 12-inch length provides a balanced ride height, contributing to optimal ride quality and stability.
The shock's five-position cam-style spring preload adjuster allows riders to easily fine-tune their suspension setup for different riding conditions or loads, ensuring a personalized ride experience. Whether you prefer a softer or firmer feel, this adjuster makes it simple to dial in the perfect setting. Many models are approved for street use; refer to the latest certification for current compliance.
Available in a sleek black finish, these shocks complement the aesthetics of your Harley while offering excellent performance. The shocks are measured center-of-eyelet to center-of-eyelet, ensuring compatibility with a wide range of Harley models. When installing on '86-'15 XL models, some modifications, such as spacers or adjustments to the chain or belt guard, may be necessary to ensure proper clearance. Slight variations in shock length can influence steering characteristics, with longer shocks providing quicker steering and shorter shocks offering a more relaxed feel. Heavy-duty applications are recommended for bikes frequently operated near maximum load ratings. Before installing shocks that differ from OEM length, verify that wheel travel and clearance are sufficient to prevent contact issues with components like the swingarm, exhaust, or tires.

Features:

• Designed specifically for Harley-Davidson FL and FX models for optimal fit and performance

• Durable construction with a sleek black finish for enhanced aesthetics

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

• Measured center-of-eyelet to center-of-eyelet for compatibility

• Available in multiple styles, including chrome or black covers, springs, and end caps

• Made in the USA with quality craftsmanship

• Provides improved ride comfort and handling on the road

• Suitable for heavy-duty applications and high-load riding conditions

• Adjustable length influences steering response and ride characteristics

• Requires minor modifications on certain Harley models for proper installation