Its our newly developed product for bicycle. This technology is only acquired by our company in China. Parameter of brake assembly: Max. operation pressure: 8MPa. Master cylinder diameter: ф11mm. Wheel cylinder diameter: 2*ф22.6mm. Mounting position of Wheel cylinder: left. Mounting-plate hole space: 51mm. Length of oil pipe: 820mm. Max. braking moment: 160N. m. Parameter of brake disc: O. D. : ф158.5mm. L. D. : ф37.5mm. Thickness: 2mm. Mounting Parameter: Hole space: ф48mm. Aperture: ф5. 4mm. No. of holes: 6. Parallel height of bottom: 2mm. Valid radius of braking: 71mm.