Team Associated ASC31872 Apex2 Gear Diff Pins

The Team Associated ASC31872 Apex2 Gear Diff Pins measure 2.0 x 9.0mm and are the cross pins that locate the spider gears inside the gear differential. Every bit of drivetrain torque passes through these pins, so they carry constant load and are one of the wear items that decide how smoothly a diff runs and how long it goes between services.

Worn, scored, or bent pins let the internal gears shift out of position, which causes rough diff action, accelerated gear wear, and inconsistent power delivery on corner exit. These are direct replacements for the factory pins and assemble into the stock differential with your existing gears and shims, with no modification required. Fitment covers the Apex2, Apex2 Sport, Apex2 Sport A550, Apex2 Sport ST550, Apex2 Sport Nissan Z, and Apex2 Hoonigan.

Fit fresh pins whenever you rebuild the differential and the whole assembly will feel tight and precise again. Inexpensive insurance for a component buried deep in the drivetrain.