Mechanical Disc Brake Caliper for the Coleman RB100 / Realtree RT100 Mini Bike Version 87 This mechanical disc brake caliper is very close a couple of our other calipers, but this one is set up for the Coleman RB100 and Realtree RT100 mini bike.  The pulling arm to the right of the face has a beak or pick axe shape with a special little clip that attached the brake cable to the caliper. Caliper details: Left pull arm 6mm*1.0 threaded mounting holes are 51mm (2.0 in) center-to-center apart Mechanical... NOT hydraulic Arm is pulled to tighten caliper Includes pads TT-125843 Mechanical caliper fits many 43cc 47cc mini bikes, pocket bikes, go-karts, etc.  Please look at pictures and description before ordering. Fits Coleman B100 and RB100 mini bike. Fits Realtree RT100 mini bike.  Shipping details: Do you need your caliper fast?  If you order before 3:00 pm CST, Monday thru Friday, your order goes out the same day.    Buy now!