2026 Mack GR64B

This is a new GR64B rolloff-spec Mack with essentially delivery miles (20 showing). It reads like a fresh vocational chassis that is ready to be upfit for work, not a used unit with unknown history. If you need a straight, modern platform for a hooklift or cable hoist build, this one is set up in the right weight class. The technical core is a Mack MP7 rated at 425 hp backed by an Allison 4500 RDS 6-speed automatic. That combo fits stop-and-go rolloff cycles and multi-driver operations where consistent shifting and PTO-friendly drivability matter. Tandem 46K rears with 3.98 gears give you the low-speed pull you want when you are loading heavy cans, with a 66,000 lb GVWR and a 20K front to keep the steering axle in the proper range. On the chassis side, it is on Mack SS46 Camelback multileaf (46,000 lb) which is a straightforward, durable suspension choice for jobsite approaches and uneven yards. 251-inch wheelbase is a workable number for common rolloff body lengths without getting overly long. Finished in white, this is a clean spec-to-suit foundation for a rolloff build.