Kubota GR2100 vs Kubota Z121S

Verdict: Kubota GR2100 vs Kubota Z121S

The Kubota GR2100 and the Kubota Z121S are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 21 hp. Kubota Z121S is the lighter machine (339 kg vs 430 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Kubota GR2100 holds more fuel (18.2 L vs 16.3 L) for longer stints between fills. Kubota Z121S is the newer design (2014 vs 2005). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.