These GPM TRX4889/9MM wheels are a precision-minded upgrade for the Traxxas TRX4 Defender, combining a 6-spoke BBS design with onroad tyres to increase track width and enhance directional stability. Manufactured from aluminum 6061T6 and finished hard anodized, the components offer improved wear resistance and straightforward assembly for tuning and maintenance. The wider hex specification increases lateral support under load, making these rims suitable for hobbyists focused on longevity and measured performance gains.