Replace the stock arms with GPM brass rear knuckle arms on your TRAXXAS TRX4 to add weight at the wheel hubs and support the inner gear case. Each arm increases wheel mass by 48 grams to boost crawling traction on awkward terrain and to help the vehicle maintain contact and return to level ground more easily.
Stabilize the inner gears of the rear knuckle arms to ensure the gears are running smooth
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