NASCAR® Xfinity Series/Craftsman Truck Series Teams Using JASPER® 4-Speed Transmissions in 2023
Twenty-one team/driver combinations are using the JASPER 4-Speed Transmission for the 2023 NASCAR® Xfinity Series season. Seven drivers representing four teams in the NASCAR® Craftsman Truck Series are also using the JASPER 4-Speed Transmission this year. The following NASCAR® Xfinity Series teams are using JASPER 4-Speed Transmissions in 2023: JR Motorsports, with drivers Sam Mayer, Justin Allgaier, Josh Berry, and Brandon Jones. Kaulig Racing, with drivers Justin Haley, Daniel H...

