Progressive Suspension 31-2503 Monotube Fork Cartridge Kit control-cables reduced friction and Quadra X-Ring

reduced friction and Quadra X-Ring design which increases chain life from 1 1/2 to 2 times longer than a standard O-Ring chain

Matching shift pegs and footpegs are available separately

Knurled at the clamp to prevent bar slipping

Two or Three Part Numbers Required for Fitment

Large flange design reduces need for washers and provides a cleaner look

Progressive Suspension 31-2503 Monotube Fork Cartridge Kit control-cables reduced friction and Quadra X-RingConverts dual damper rod and damper rod cartridge forks to high performance cartridge forks. Contains a pair of high performance, gas charged mono tube fork cartridges. Improves resistance to front brake dive, front end stability, cornering and bottoming control. Add direct internal component replacement. No modification for forks required. Made in the USA. Vehicle Fitment: 2000 2007 Harley Davidson FXST Softail Standard 2000 2009 Harley Davidson