The special aspects of the new 1-piece RG-D2 models include the step-rim form plus three types of concave spokes in 6-spoke styles. Actually, this shape was used with the original RG line, so the new design could be said to be a return to the original, done with today's most advanced technology fused with today's latest design trends. The outer rim features diamond machining, and the wheels, while being one-piece, have a step-rim look that recalls the two-piece structure. Nevertheless, the stiffness, strength, and light weight of these wheels are made possible by their one-piece structure.
