Traxxas 5397 - Optidrive Sensor Assembly/ 2.5X6Mm Cs (2) by Traxxas $19.90 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Traxxas 5397 - Optidrive Sensor Assembly/ 2.5X6Mm Cs (2)Brand: TraxxasPart Number: 5397Replacement or upgrade part for these Traxxas models: