Get dependable track performance with the XRAY X4 Composite Gear Differential Case, fitted with a 38T pulley and made from durable composite material. This replacement part matches the XRAY #309403 X4 Gear Differential to ensure correct alignment and smooth operation.
The case includes small bleeding holes sized for M2.5x8mm screws to let excess oil escape, helping preserve proper fluid balance. Its updated layout centers the rear belt position to improve driveline consistency and forward traction, making it a solid option for racers wanting reliable handling.
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