SRAM Level Silver Stealth Disc Brake Caliper Assembly - Front/Rear Post Mount 4-Piston BLK C1 MPFN-18077-18 Ideal internal rim width is

Ideal internal rim width is 23mm

Rear Axle Conversion Kit

}Park Tool AWS-8 Y Hex Ball Wrench 4 5 6mm

35mm chassis

SRAM Level Silver Stealth Disc Brake Caliper Assembly - Front/Rear Post Mount 4-Piston BLK C1 MPFN-18077-18 Ideal internal rim width isSRAM Level Silver Stealth Disc Brake Caliper Assembly Front Rear Post Mount 4 Piston Black C1. SRAM Hydraulic Disc Brake Caliper assemblies for Level Stealth series of brakes. High strength and lightweight 2 pc aluminum caliper body For front or rear use TECH SPECS Brake Caliper Type Post Mount Brake Position Front or Rear Color Black Defined Color Black Hydraulic Fluid Type DOT Hydraulic Hose Length Not Included Pad Compound Organic Rotor Included No