BD8 RTC Sus Arm Upgrade 53mm in/out x 39.5mm Shock Pivot for BD-8 - Yokomo B8-RTC-09  [B8-RTC-09]

Product summary and fitment

This replacement suspension arm is intended for use with the optional RTC (Rear Toe Control) system on the BD8 2018 platform. The arm maintains a 53mm in/out suspension pin measurement and locates the shock pivot at 39.5mm to match BD8 RTC geometry.

Fitment is focused on BD8 on-road chassis and the item is explicitly listed as suitable for MRTC-BD8SV. Use the arm when adding or adjusting the RTC unit to change rear toe behaviour without altering the main bulkhead or primary suspension layout.

Installation notes: supplied as a direct-fit for BD8 RTC mounting points, you will normally reuse the car's existing pins and hardware unless replacement hardware is needed. After installation ensure correct alignment, free articulation, and that the arm clears the shock and driveshafts.

Tuning impact: installing this arm within an RTC-equipped rear provides a consistent way to modify rear toe sensitivity. Small changes to arm or pivot positions give repeatable toe response while braking and cornering, assisting balance and traction on race-prepared on-road tracks.