Progressive Suspension High Performance Fork Cartridge 31-4008

True high-performance front suspension is finally available. Progressive Suspension has gone back to the drawing board and created a state of the art Fork Cartridge Kit designed to outperform everything on the market. Their asymmetrical design places a preload adjuster over a progressive rate spring in one leg and an aluminum bodied, sealed cartridge damper on the other. The result is superior damping and ride control combined with tunable preload and a new benchmark for high-performance suspension on the Dyna platform. Each kit includes components for stock height or 1" lowered. Adjustable preload. Improved resistance to front brake dive. Improved front end stability. Improved cornering. Improved bottoming control. Fits Stock

Vehicle Fitment

Harley-Davidson FLDE Deluxe 18-20

Harley-Davidson FLFB Fat Boy 18-20

Harley-Davidson FLFBS Fat Boy 114 18-20

Harley-Davidson FLHC Heritage Classic 18-21

Harley-Davidson FLHC Heritage Classic 18-22

Harley-Davidson FLHCS Heritage Classic 114 18-21

Harley-Davidson FLHCS Heritage Classic 114 18-22

Harley-Davidson FLSL Slim 18-21

Harley-Davidson FLSL Slim 18-22

Harley-Davidson FXBB Street Bob 18-20

Harley-Davidson FXBR Breakout 18-20

Harley-Davidson FXBRS Breakout 114 18-20

Harley-Davidson FXLR Low Rider 18-20

Harley-Davidson FXST Softail Standard 20-21

Harley-Davidson FXST Softail Standard 20-22