Race Tech FRSP454754 Fork Spring 0.54 kg/mm Chrome Silicon Hi-Performance

The Race Tech FRSP454754 is a high-performance motorcycle fork spring with a 0.54 kg/mm spring rate, designed for riders seeking precise, tunable front suspension. Measuring 45mm in outer diameter and 475mm in length, this spring is engineered as a direct upgrade over stock fork springs that are commonly under-sprung for many riders.

Race Tech fork springs are manufactured from chrome silicon steel and undergo shot-peening, heat treatment, and pre-setting processes to ensure long-lasting performance and resistance to sacking out. Spring rates are accurate to within 2 percent, delivering consistent and predictable handling characteristics.

Key Features:

• Spring Rate: 0.54 kg/mm (52.9 N/mm / 30.2 lb/in)
• Outer Diameter: 45mm
• Length: 475mm
• Chrome silicon steel construction for a high stiffness-to-mass ratio
• Shot-peened and heat-treated for durability and fatigue resistance
• Pre-set to prevent spring sack-out over time
• Spring rate accurate to within 2% for consistent, predictable performance
• Sold as a set (pair)

Selecting the correct spring rate is the foundation of proper suspension tuning. Riders who are heavier than average, carry gear, or ride aggressively will benefit from upgrading to a stiffer spring rate like the 0.54 kg/mm. Race Tech's extensive spring lineup makes it easy to find the ideal rate for your weight and riding style.