A track system for use with a vehicle having a chassis and a drive shaft extending laterally outwardly from the chassis for driving the track system, the track system comprising: • an attachment assembly connectable to the chassis of the vehicle, the attachment assembly having a leading pivot and a trailing pivot extending laterally outwardly therefrom; • a multi-member frame assembly disposed laterally outwardly from the attachment assembly, the multi-member frame assembly including: ∘ a leading frame member pivotably connected to the attachment assembly via the leading pivot for pivoting about a leading pivot axis; ∘ a trailing frame member pivotably connected to the attachment assembly via the trailing pivot for pivoting about a trailing pivot axis; ∘ a leading wheel-bearing frame member at least indirectly pivotably connected to the leading frame member; ∘ a trailing wheel-bearing frame member at least indirectly pivotably connected to the trailing frame member; • a damper interconnecting the leading frame member and the trailing frame member; • a leading idler wheel assembly rotatably connected to the leading wheel-bearing frame member; • a trailing idler wheel assembly rotatably connected to the trailing wheel-bearing frame member; • a plurality of support wheel assemblies (290a, 290b, 290c) disposed intermediate the leading idler wheel assembly and the trailing idler wheel assembly; • a gearbox having an input shaft operatively connectable to the drive shaft of the vehicle and an output shaft; • a sprocket wheel operatively connected to the output shaft of the gearbox; and • an endless track extending around the sprocket wheel, the leading idler wheel assembly, the trailing idler wheel assembly, and the plurality of support wheel assemblies (290a, 290b, 290c), and drivable by the sprocket wheel. • an attachment assembly connectable to the chassis of the vehicle, the attachment assembly having a leading pivot and a trailing pivot extending laterally outwardly therefrom; • a multi-member frame assembly disposed laterally outwardly from the attachment assembly, the multi-member frame assembly including: ∘ a leading frame member pivotably connected to the attachment assembly via the leading pivot for pivoting about a leading pivot axis; ∘ a trailing frame member pivotably connected to the attachment assembly via the trailing pivot for pivoting about a trailing pivot axis; ∘ a leading wheel-bearing frame member at least indirectly pivotably connected to the leading frame member; ∘ a trailing wheel-bearing frame member at least indirectly pivotably connected to the trailing frame member; ∘ a leading frame member pivotably connected to the attachment assembly via the leading pivot for pivoting about a leading pivot axis; ∘ a trailing frame member pivotably connected to the attachment assembly via the trailing pivot for pivoting about a trailing pivot axis; ∘ a leading wheel-bearing frame member at least indirectly pivotably connected to the leading frame member; ∘ a trailing wheel-bearing frame member at least indirectly pivotably connected to the trailing frame member; • a damper interconnecting the leading frame member and the trailing frame member; • a leading idler wheel assembly rotatably connected to the leading wheel-bearing frame member; • a trailing idler wheel assembly rotatably connected to the trailing wheel-bearing frame member; • a plurality of support wheel assemblies (290a, 290b, 290c) disposed intermediate the leading idler wheel assembly and the trailing idler wheel assembly; • a gearbox having an input shaft operatively connectable to the drive shaft of the vehicle and an output shaft; • a sprocket wheel operatively connected to the output shaft of the gearbox; and • an endless track extending around the sprocket wheel, the leading idler wheel assembly, the trailing idler wheel assembly, and the plurality of support wheel assemblies (290a, 290b, 290c), and drivable by the sprocket wheel.