Race Tech HP Springs have a high stiffness-to-mass ratio. In other words; the springs are light weight for their particular spring rate. This requires the finest materials and processing. Shot-peened and pre-set so they cannot sack out. All Race Tech HP Springs have the highest rate tolerances in the industry. These are the finest springs in the world-guaranteed.

OEM spring rate is .46kg. We offer stiffer spring rates from -5% to 10% for riders who wish to carry luggage or just prefer stiffer suspension.