TKR5000FB - Chassis (7075, hrd ano, lightened, bumper mod)

The two front-most holes on the original EB48 and EB48.2 chassis were not countersunk since the bumper design covered them.  However, we have now decided to countersink the two front holes after testing showed that cutting the front bumper area that goes underneath the chassis increases ground clearance.  

The bumper can be secured with just the M3x8mm cap head screw that mounts to the front outer hinge pin brace. 

Other than the front two holes being countersunk, the chassis is identical to the original chassis.