Cooling Spacer is put between the disks, and a brake
system is Ventilated Brake Disk with cam-type which
improved effect on radiation. Pulley Blake Adapter is
made with the A70-75 (T6) duralumin.
Durability for pin pressure joining improved drastically.
(It prepares for the brake pad made of the Teflon in
the option)

A side makes a receiver battery pile it, the battery
holder which restrained a holder part low and which
considered the low center of gravity.

The main chassis of MRX-2 becomes narrow more than
Sting, and adopts the 5mm A70-75 (T6) duralumin which
keeps strength of chassis. Unexpected movements by
the road surface contact with bottom of chassis are
drastically decreased by processing it into taper-shaped
the bottom of chassis.