40mm ZTTO Mountain Bike Shock Absorbent Fork Oil Dustproof Sponge Ring is a maintenance tool designed for mountain, road, and folding bikes. It functions to improve the damping ability of bike forks, providing a smoother ride.
Material: sponge
High density sponge produced through a 5 times heat compression process
Seamless cut with a tolerance rate of less than 0.1
Compatible with mountain bikes, road bikes, and folding bikes
Available sizes: 30mm, 32mm, 34mm, 35mm, 36mm, 38mm, 40mm
Visually indicates fork condition through color changes
Improves damping ability, reducing vibration and impact
