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Race Tech Hi-Performance Fork Spring have the highest stiffness-to-mass ratio in the industry. This means they are lightweight for their particular rate. These spring designs have taken years of manufacturing experience. They require the finest materials and processes.

Race Tech Hi-Performance Springs have extremely accurate rates. They are heat-treated, shot-peened and preset so they cannot sack out.

OEM spring rate is 0.42kg/mm. 

Lightweight, for reduced unsprung mass. Straight rate springs will give better control in the rough stuff. Sold in pairs.

• Rider and Gear up to 145 lb. = 0.47 springs → 24% stiffer than stock
• Rider and Gear 145-185 lb. = 0.52 springs → 39% stiffer than stock
• Rider and Gear 185-235 lb. = 0.58 springs → 56% stiffer than stock
• Rider and Gear 235-285 lb. = 0.63 springs → 66% stiffer than stock
• Rider and Gear 290 lb.-UP = 0.70 springs → 84% stiffer than stock