TRF420/TA-07 Direct Pulley (37T), RC spare part

The TRF420/TA-07 Direct Pulley (37T) is a dedicated RC spare part for front drivetrain service on compatible chassis cars. Its integrated front direct pulley and holder form 1 molded assembly, trimming 2 g compared with the separate-part layout used on earlier TRF chassis and keeping the rotating section lighter. Included 0.2 mm and 0.3 mm shims allow pulley position and clearance adjustment during installation, which is especially useful when the part is fitted on chassis other than TRF420. The pulley flange pushes into the pulley with a snap-fit connection, creating a compact assembly around the central hub opening. Direct cups are mounted with screws rather than the 2 x 9.8 mm pins used on the previous chassis generation, so cup replacement can be handled separately from the pulley itself. The set contains 1 TRF420 front direct pulley and 4 shim washers, with 2 pieces in each shim thickness. In workshop use, this part suits routine drivetrain refreshes after wear or damage, and it also supports careful fitment tuning where clearance needs fine adjustment. Compatibility covers TRF420 and TA-07 chassis cars, while TRF419 fitment requires separately sold front direct cups.