The Yokomo B7-BTC kit supplies four resin tension cams purpose-built for 1/10 touring car chassis. Moulded from lightweight resin, they add minimal mass yet permit quick belt tension changes without swapping bulkier components.
Placed along the belt routing, the cams alter take-up and the tension point, helping tune belt stability and drive feel during setup. Fitting is simple for those used to belt-drive touring cars: remove the belt cover and replace the existing cams following the chassis service steps.
Tuning advice: make modest adjustments and recheck belt runout and alignment as you go. Since the parts are resin, do not overtighten nearby fasteners to avoid warping. These cams suit tuners seeking a low-weight option for fine control on the listed chassis.
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