RTB1005M: Racetech milled aluminum bracket for side-mounting seats. Same shape as the RTB1003S brackets but half the weight. 5mm thick 5083 alloy. Sold as a pair. Fits the following seat models:

• RT1000 (and Vinyl)
• RT4000WLB (and Vinyl)
• RT4000WXLB (and Vinyl)
• RT1000LBHG (and Vinyl)
• RT4000W (discontinued)
• RT4000WX (discontinued)
• RTSaker (with modification)
• RTRoad (discontinued)
• RTRoadW (discontinued)