Mazda RX-8 2004 Service Highlights page 411

• A high-tensile-strength plate that is highly
effective in absorbing force has been adopted for
the large profile, straight-shaped rear side frame.
Structural strength of the high-mount backbone
frame and the crossmember rear side frame has
been reinforced in order to disperse an impact to
the fuel tank area and thereby suppress
deformation.
End Of Sie
CABIN CONSTRUCTION
• A triple-H construction has been adopted which provides a solid assembly, while being center pillar-less, due to
the H-shaped structure of the floor, sides and roof.
• The solid coupling of the rear door locks (top and bottom) with the strikers on the body, together with the rear
door built-in pillar provide structural strength equal to or better than that of a regular sedan.
• The side impact bar inside the front door is positioned to effectively disperse an impact throughout the body.
Also, catch pins are installed to disperse impacts involving the doors throughout the side sill.
• Body rigidity has been improved due to the highly rigid, closed-section high-mount backbone frame located
along the upper part of the transmission tunnel.
HIGH-MOUNT BACKBONE FRAME
SIDE IMPACT BAR
SEC. A—A
09–10–2
BODY PANELS
A
A A
CATCH PIN
CROSSMEMBER
HIGH-MOUNT
BACKBONE FRAME
BUILT IN
PILLAR
B
B
CATCH PIN
SEC. B—B
REAR BUMPER
REINFORCEMENT
REAR SIDE FRAMES
CHU0910S004
CHU091001084S03
C
C
CATCH PIN
SEC. C—C
CHU0910S001