Dimensions
Bumper to back of cab (BBC)2.946 m3.112 m
Sleeper roof optionsMid-Roof XT 48 in, 60 in, 72 in; Raised Roof 60 in, 72 inNot published
Max wheel cut50°up toNot published
Front of hood to back of cabNot published2.959 m
Front overhangNot published0.737 m
Front axle to back of cabNot published2.223 m
Back of cab to exhaust stackNot published0.292 m
Tandem axle spacingNot published1.27 m
Cab height above frameNot published1.801 m
Frame heightNot published0.853 m
Ground clearanceNot published0.48 m
Exhaust stack height above frameNot published2.736 m
Overall widthNot published2.553 m
Width over mirrorsNot published2.962 m
Front trackNot published2.055 m
Bumper to back of cab (2026 all-new Granite)Not published2.883 maxle-forward and axle-back day cab, 2026 cab
Dimensions (Australian build, Cascadia 126)
Cab height3.03 mday cab; heights exclude aero deviceNot published
Wheelbase4.425 m6x4 day cab, standard tare-mass vehicle3,785-6,660 mm (149-262 in) listed for GR/GU7 axle-forward tractors
Kerb weight8,200 kgNot published
Gross vehicle weight26,000 kg6x4, Australia rating; 24 t New ZealandNot published
Engine
Engine modelDetroit Gen 5 DD13370-525 HP, 1,250-1,850 lb-ftMack MP13; Cummins X10 (10 L) optional
Gross power370-525 HP540 hp max (MP13); 450 hp max (Cummins X10)
Max torqueup to 1,850 lb-ft1,950 lb-ft max (MP13); 1,650 lb-ft max (Cummins X10)
Transmission
TransmissionDetroit DT12 On-Highway Series 12-speed automated manual (DT12-HE, DT12-HL); Eaton Cummins Endurant 12-speedNot published
Front axleDetroit or Meritor 12k, 12.5k, 13.3k, 14.7k; Hendrickson Steertek NXT 12.5k, 13.3kNot published
Rear axleDetroit single 20k, 23k and tandem 40k; Meritor single 20k, 23k and tandem 40k, 46kNot published
GearboxNot publishedmDRIVE HD 12-, 13- or 14-speed automated manual; Allison RDS Series 6-speed automatic
Axle configurationsNot published4x2, 6x4, 8x4 with pusher or tag axle, 8x6 tridem, 10x4 with pusher axles
AxlesNot publishedMack, Meritor or Dana Spicer front axles; Mack, Meritor or Dana rear axles
Rear suspensionNot publishedMack Camelback, MaxRide air, Mack AL, Hendrickson Haulmaax EX
Weight
Weight classNot publishedClass 8 heavy-duty
Front axle loadNot published5,443-9,072 kg (12,000-20,000 lb) front axle ratings, GR/GU7 tractor
Rear axle loadNot published17,239-20,866 kg (38,000-46,000 lb) rear axle ratings, GR/GU7 tractor
Cab
CabNot publishedAxle-forward or axle-back day cab, 113.5 in BBC; 44-inch mid-roof sleeper option
Service capacities
Engine oil panNot published42 LMP7 / MP8 oil pan (44 US qt)
Service intervals
Engine oil and filterNot published70,000 km
Fuel filtersNot publishedwith each engine oil change
CoolantNot published1,200,000 km
Air filterNot publishedinspect at each oil change; replace at the gauge maximum or every 24 monthsevery 12 months in severe duty
DEF filters and tankNot published289,000 km
Transmission oil and filterNot published800,000 km or 60 months
Axle oilNot published800,000 km / 36 months (GO-J PLUS)
