The Kubota R420S and R520S wheel loaders are available in 43 or 49 horsepower and come with the Kubota E-TVCS (Three Vortex Combustion System) engine, which emits less NOx emissions and an direct injection system. These wheel loaders come standard with a load sensing transmission. With 4 wheel drive and a limited slip differential, the R420S/R520S offers superior traction and stability. Both models may also be equipped with an optional backhoe attachment on the rear of the wheel loader.