Race Tech FRSPS4430100 Fork Spring 1.0 kg/mm 43.5mm x 300mm

The Race Tech FRSPS4430100 is a high-performance replacement fork spring with a 1.0 kg/mm (56.0 lb/in) spring rate, designed for 43.5mm fork tubes at 300mm in length. Engineered for riders who demand precision and consistency from their front suspension, this spring delivers a noticeable improvement over stock units that are often under-sprung for many riders.

Key Features:

• Spring Rate: 1.0 kg/mm (56.0 lb/in) — accurate to within 2% of rated value
• Dimensions: 43.5mm outer diameter x 300mm length
• Material: Chrome silicon steel for a high stiffness-to-mass ratio
• Shot-peened, heat-treated, and preset to prevent sacking out over time
• Sold as a pair

Race Tech fork springs are precision-wound to exacting tolerances, ensuring consistent performance across the full range of suspension travel. The chrome silicon construction keeps weight low while maintaining the rigidity needed for aggressive riding. Whether upgrading for a heavier rider or dialing in suspension for a specific riding style, the FRSPS4430100 is a direct-fit solution for compatible 43.5mm fork applications.