The Yokomo BD-207L rear drive belt is made for BD7-2015 scale touring cars that have undergone a forward motor conversion. It replaces the original rear belt and transfers power from the relocated front-mounted motor back to the rear drivetrain.
Compatibility is limited to the BD7-2015 variants listed for this part, namely MRTC-BD715B, MRTC-BD715O, and MRTC-BD715S. Confirm your chassis code matches one of these before fitting the belt.
Installation notes: route the belt along the existing pulley path used on the converted drivetrain, make sure pulleys are concentric, and set tension to remove slack without adding drag. Verify that the belt seats cleanly on each pulley and check for uneven wear after the first few runs.
Tuning role: the belt connects motor output to the rear geartrain and influences drivetrain smoothness and responsiveness. Correct tension and pulley alignment reduce play and transmission losses, while a stretched or worn belt can cause slop and inconsistent power transfer. Inspect regularly and replace when wear becomes visible to keep handling predictable.
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