Disc brake Rotor, disc brake caliper and to make the disc brake pads can not be stained with oil, change the disc brake caliper or to make the disc brake pad before the rotors to avoid oil on the disc brake disc will affect the brake effect, you can use alcohol to clean the disc brake rotors. Center 6 bolt pattern diameter on rotor is 44mm. It is general for mountain bikes and electric bicycle?Front and Back - 160mm rotor diameter. F180R160mm--front clipers,means choosing the 180mm rotors if you want to intall the clipers at the front wheel,and for rear wheel you have to choose the 160mm rotor. F160R140mm--front clipers,means choosing the 160mm rotors if you want to intall the clipers at the front wheel,and for rear wheel you have to choose the 140mm rotor.

Exterior: Aluminum. Material: Aluminum. Brand: catazer. Date First Available: June 28, 2019. Best Sellers Rank: #76,124 in Sports & Outdoors. Customer Reviews: 3.8 out of 5 stars 5 ratings 3.8 out of 5 stars. : B07TQ5XXQD. Manufacturer Part Number: ?DIS013. Exterior: ?Aluminum. Package Dimensions: ?6.97 x 6.46 x 2.13 inches. Item Weight: ?1.19 pounds. Brand: ?catazer. Manufacturer: ?catazer.