Rotor Information:
The bracket for the rear brake can be found here
The bracket for a front brake can be found  here 
203mm x 1.8mm size:</font color> Talaria Sting are 203mm diameter Rotors from the factory.
Talaria Sting are 203mm front and rear rotor sizes from the factory ( the R MX4 is 220mm ) .
The 203mm Rotor does not need a caliper bracket and is a one piece 1.8mm thick rotor same as factory thickness.
220mm x 1.8mm</font color> Size: this is an upgraded oversized rotor that provides additional braking force. A perfect upgrade if you’re a hard rider and pushing the limits of your current 203mm rotors.
1.8mm thickness one piece design
 This 220mm rotor you will need a caliper adapter bracket to space the brake caliper out for the bigger rotor. Link is listed above.
220mm x 1.8mm</font color> Floating Size: this is an upgraded oversized rotor that provides additional braking force. A perfect upgrade if your running bigger / heavier wheels or a modified power output
1.8mm, 2 piece designs helps with heat cycling which is major reason rotors warp. The 2 piece design helps stop that from happening
This 220mm rotor you will need a caliper adapter bracket to space the brake caliper out for the bigger rotor. Link is listed above
 
220mm x 2.3mm</font color> Floating Size: this is a beast of a rotor and a serious upgrade that provides the best braking possible. A perfect upgrade if your running bigger / heavier wheels and insane power output
2.3mm 2 piece designs helps with heat cycling which is major reason rotors warp. The 2 piece design helps stop that from happening
This 220mm rotor you will need a caliper adapter bracket to space the brake caliper out for the bigger rotor. Link is listed above