That is an extra front side direct pully facet of the TRF420. Take advantage of this product to replace damaged or used components within drivetrain.
• TRF420 Front Direct Pulley x1
• 0.2mm & 0.3mm Shims x2 each
• Front direct pulley and direct holder are a plastic part for a weight savings of 2g in comparison with split components utilized on previous generation of TRF framework.
• Direct cups are now screw-attached (ended up being 2x9.8mm pins on previous framework), allowing their replacement without necessity to remove the direct pulley component.
• suited to TRF420 and TA07 framework cars.