Yokomo B9-00219LA Graphite main chassis for BD9 (2mm Long susarm)  [B9-00219LA]

Main chassis fit and role

This graphite main chassis is designed as the mounting platform to attach the BD10 standard 2mm long suspension arm onto the BD9 platform. It serves as the core structural element that locates the suspension arm and maintains alignment between the front and rear suspension geometry.

Compatibility is focused: the part supports BD9 installs and is listed for the MRTC-BD919S chassis. The component's graphite construction provides the expected stiffness and vibration damping characteristics that experienced tuners use to influence handling balance without adding electronic changes.

Installation notes: the chassis replaces the original BD9 main plate where the BD10 2mm long suspension arm must be fitted. Standard mounting points are retained for bolt-on attachment, and installation typically involves removing the stock plate, fitting the graphite chassis, and verifying clearances for steering linkages and the suspension arm travel. No additional hardware is specified here; use the original fasteners or OEM-recommended replacements for your chassis.

For builders who need to fit a BD10-standard 2mm long suspension arm onto a BD9-based car, this graphite main chassis provides the structural interface and stiffness profile required for precise suspension positioning and consistent setup work.