SwissStop Catalyst Pro Disc Rotor - 220mm 6-Bolt Silver/Black ModelNumber=K4049 The stepped leading edge rolls

The stepped leading edge rolls like a ramp but digs in on climbs making Mazza a top choice for both front and rear use

Intended for XC mountain cycling

Pair with matching Micro Levers Counter Display (TL0560)

SHIMANO RT-EM300 disc brake rotors for speed sensor systems provide exceptional stopping power in all riding conditions

SwissStop Catalyst Pro Disc Rotor - 220mm 6-Bolt Silver/Black ModelNumber=K4049 The stepped leading edge rollsSwissStop Catalyst Pro Disc Rotor 220mm 6 Bolt Silver Black. The SwissStop Catalyst Pro disc rotor has been engineered to provide optimal heat dissipation while providing powerful braking and superior durability. The two piece design consists of a 7075 T6 aluminum alloy spider and SUS410 stainless steel brake track to balance light weight with reliable thermal management and structural performance. Optimum heat dissipation Reliable performance for a