The Custom Line 106 2019 vs Custom Line 120 2018 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Custom Line 120 2018 measures 125,1 feet overall (2018), giving it roughly 17,3 additional feet of deck space compared to the Custom Line 106 2019 at 107,8 feet (2019). Weight tells a clearer story for trailering families: the Custom Line 120 2018 tips the scales at 341 717 lbs — 63 935 lbs less than the Custom Line 106 2019 at 277 782 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
Both boats share a closely matched power ceiling — 2 638 hp for the Custom Line 106 2019 and 2 638 hp for the Custom Line 120 2018. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads — 4 gal and 4 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Custom Line 120 2018 is rated for 38 passengers, while the Custom Line 106 2019 caps at 32. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Custom Line 120 2018 could be the deciding factor.
Bottom line: Choose the Custom Line 120 2018 if your priority is putting more people on the water — it handles 38 passengers and at 125,1 ft it has the deck room to back that rating up comfortably. The Custom Line 106 2019 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 32 that costs less to run day-to-day.