Leatt Fit System Pro MTB 1.0/2.0/3.0/4.0The Leatt Fit System Pro MTB 1.0/2.0/3.0/4.0 replaces the adjustment system on your MTB 1.0, 2.0, 3.0 and 4.0 mountain bike helmets.Your Leatt mountain bike helmet leads a hard life, keeping your head safe and sound as you enjoy the excitement of riding. And all that action can mean parts wear out or need replacement after a tumble. The Fit System Pro MTB 1.0/2.0/3.0/4.0 is there to get your lid back to normal and ensure a secure and safe fit at all times.Features:Part numbers - M - 4023052550 / L - 4023052560Replacement adjustment and cradle system for Leatt MTB helmetsBuy Leatt Protection from Chain Reaction Cycles, the World’s Largest Online Bike Store.