Machined from 2mm high-grade graphite, this optional one-piece long top deck is recommended for high-traction carpet and Astroturf tracks. The top deck reinforces the chassis assembly by connecting the front diff bulkhead with the central drive system, and provides a location for the body mount. The top deck secures the central drivetrain bearings and holds them in place in the bulkheads.
#361161 Xray XB4 Graphite Long Upper Deck
Source: Xray
