Description: Condition: Brand Material: Metal Color: Silver Weight: Approximately 700g Quantity: 1 pc Mounting shaft hole: 51mm (2.01 inches) Oil pipe length: Approximately 1150mm (45.3 inches) and 850mm (33.5 inches) Fits 7/8 inch handlebars Fitment: Right-side installation: Compatible with 2-stroke 43cc, 47cc, 49cc, 97cc pocket bikes including FS529, R1, Z600, C1, FS513, chopper DR50, DB801A, and 43cc/49cc stand-up gas. Left-side installation: Compatible with 97cc, 100cc, 2.5hp, 2.8hp, 3hp Doodle Bug DB30, Bug Racer, Blitz Motorsports models.Not directly compatible with CT100U, Motovox, Moto MM-B80, MM-B105, Realtre RT100, or Mega models; bracket modification may be required for fitment. This hydraulic disc brake master cylinder caliper uses DOT4 brake fluid.Installation requires bleeding the brake system to remove air from the master cylinder and hydraulic lines. Package includes: 1 x Brake assembly master hydraulic cylinder caliper 1 x Pair of spare brake pads Compatible with OPGT Motorcycle Hydraulic Disc Brake Master Cylinder Caliper For 2 Stroke 47cc 49cc 97cc Pocket Bike Moto Bike Scooter. Disclaimer: This is a compatible replacement part.Any brand or model mentioned is for compatibility demonstration, not endorsement.