Re-designed aluminum rear RIGHT bulkhead. Chassis mounting positions below the 2-speed axle have been removed, and bulkheads are now mounted into the rear-front suspension holder for improved flex characteristics and traction. The bulkheads have special cutouts for precise centering into the rear-front suspension holder. The super-lightweight bulkheads have a very clean & lightweight design to give the lowest weight and CG, making the NT1 easy to service while still allowing easy access to all parts.