Fitment: Upgraded Hydraulic Brake System 50 Incch Hose For Mini Bike Doodlebug DB30 Minibikes Go Karts / This Kit Is A Direct Fit The DB30 Series Bikes That Have The Rear Disc Brake Only. Can Also Be Adapted To Come Motovox Minibikes With A Rear Disc Brake. / Will Not Fit Monster Moto Bikes Without Modifying The Mounting Bracket On The Frame. This Can Be Adapted To Other Minibikes/Go Karts, But Brackets Will Need To Be Fabricated. Master Cylinder Is Filled With Fluid, But May Need To Be Bled Before Use. When Mounting On DB30 Minibikes With Disc Brakes, You Must Ensure The Rotor Is Centered In The Caliper For Proper Operation. Due To Manufacturing Tolerances In These Minibikes, You May Need To Shim The Caliper To Achieve The Proper Alignment. This Kit Is For Using On The Left Of The 7/8″ Handlebars. / Brake Hose Is 50″ Length. / 2″ Center To Center Mount Holes On Brake Caliper. Package Include: 1set Hydraulic Brake System / 1pc Bottle Opener Reminder: The Same Model May