2 ½" from the DPF, & then expanded to 3" Tube.
These systems are DPF back to maintain emissions compliance.
All mufflers options are straight through in design for maximum flow.
Make: Toyota
Model: Landcruiser 79
Variant: VDJ79R Single cab
Engine Type: 1VD-FTV
Engine Capacity: 4.5L
Brand: Redback Extreme Duty
Year: 10/16 on