Yokomo B8-RTC-09 53mmxShock39.5mm RTC Sus-Arm for BD-8  [B8-RTC-09]

RTC suspension arm overview

This is an RC-scale replacement suspension arm designed for use with the optional RTC (Rear Toe Control) system on the BD8 2018 platform. The arm features a measured in/out suspension pin distance of 53mm and a shock pivot located at 39.5mm, matching the RTC geometry specified for BD8 setups.

Compatibility is focused on BD8-family on-road chassis and is explicitly noted as suitable for MRTC-BD8SV. Use this arm when fitting or adjusting the optional RTC unit to alter rear toe behaviour without changing the bulkhead or major suspension geometry.

Installation notes: the part is supplied as a direct-fit spare for the BD8 RTC mounting points, so expect to reuse existing pins and hardware from the car unless replacement fasteners are required. Check alignment and free movement after installation and verify there is no interference with the shock or driveshafts.

Tuning role: fitting this arm as part of an RTC-equipped rear end gives a controlled way to modify rear toe sensitivity. Small changes in arm or pivot position translate to predictable toe response during roll and braking, helping fine-tune corner exit and stability for on-road track conditions.