Boss STX24410 48" SR MAG Snowthrower Kit. When it comes to moving snow, the SR MAG’s new snow thrower STX48 delivers. A system designed to process more snow even faster, the snow thrower features a 2500 psi motor that produces 750 rpms and 14.5 horsepower ­— moving snow between two and 35 feet. Designed with the BOSS trusted float system and D-Force as standard features for all attachments, the vehicle side hydraulics make operating attachments easy.