Shimano Disc Brake Rotor RT-MT900 Size:180mm The patented conical fitting fits

The patented conical fitting fits to all tow balls

The optimal combination between Trioxx and Trilite material for maximal freedom of movement and protection

29er stability and speed

Mounting: Two bolt direct mount

It also has a handle integrated into the saddle so you can guide while they ride and tool-free training wheels that are super easy to install and remove

Shimano Disc Brake Rotor RT-MT900 Size:180mm The patented conical fitting fitsDescription XTR and Dura Ace RT MT900 Ice Tech rotors providing consistent braking performance through energy control, using revolutionary stainless steel alloy 3 layer sandwich construction that manages heat while riding The clad steel alloy steel rotor construction allows heat generated from braking to radiate quickly through the aluminium core achieving surface temperature drops of around 50 deg C. When used with Ice Tech pads surface temperatures