These longer pull rods help lower the seat height of Honda's new CRF450L & 450X 24mm (approx 1"). Recommended sag is around 100-102mm with the fork height lowered 10mm (12mm from flush). Will allow riders around 5'6" to reach the ground. NOTE: They also work as performance arms on the 250/450R raising the rear 3mm increasing comfort and bottoming resistance.