Diff Spool: LMT
Team Losi indicates this will work with:
LMT:4wd Solid Axle Monster Truck, : RTR - LOS04021T1
LMT:4wd Solid Axle Monster Truck, SonUvaDigger: RTR - LOS04021T2
LMT: 4wd Solid Axle Monster Truck: Roller - LOS04022