How to Measure the Perfect Size for You?
The bumper length, given in millimeters, is illustrated in the diagram above.
In words, the bumper length is the distance between the midpoint of the straight line connecting the center points of the body posts and the furthest point at the front of the bumper.
To determine the exact size you need:
STEP 1: Remove your current bumper and mount the body onto your car.

STEP 2: Mark the midpoint of the straight line connecting the center points of the body posts.

STEP 3: Measure the distance from this point to the inner wall of your body shell.

FINAL STEP: Subtract 1-2mm from the measured value, as the body shell should not rest directly on the bumper. Order the bumper in your calculated length by selecting the appropriate chassis and body type.
Finally, install your perfectly fitting bumper and hit the track!

