Shimano SLX SM-RT70-ME Disc Brake Rotor - 180mm Center Lock Silver ModelNumber=17358 } Impact resistant and flexible

} Impact resistant and flexible polycarbonate construction

}RockShox Rear Shock Mounting Hardware - 3-Piece 1/2" 8 x 30

the bike gets hit by a football the lock only gives a short warning tone

3/8" drive interface

Shimano SLX SM-RT70-ME Disc Brake Rotor - 180mm Center Lock Silver ModelNumber=17358 } Impact resistant and flexibleShimano SLX SM RT70 M Disc Brake Rotor 180mm Center Lock Silver. Shimano SLX SM RT70 center lock disc brake rotor delivers powerful and consistent brake performance in all riding conditions. 3 layer structure with aluminum core and two stainless steel outer layers reduces rotor surface temperature approximately 100 degrees Celsius compared to all steel rotors Aluminum spider Includes lock ring with external serration Requires external type rotor lock