The Kubota RTV-XG850 Sidekick is Kubota's sport-oriented gasoline UTV, and Sun Coast Cycle Sports stocks used parts from donor units. Produced from 2018 to present, the Sidekick departs from Kubota's traditional diesel UTV formula with a powerful 48 hp 851cc gasoline engine, a CVT (continuously variable transmission), and a top speed of 40 mph. Available in General Purpose, Worksite, and Special Edition configurations, the Sidekick targets recreational and light-duty work users who want more speed than the diesel RTV lineup provides. Parts are inspected, individually photographed with unique SKUs, and ship from Florida.
RTV-XG850 Sidekick platform and parts compatibility
The Sidekick is a completely different platform from all other Kubota RTV models. It shares NO engine, transmission, or chassis components with the diesel RTV900, X900, RTV1100, RTV1140, or X1140. The 851cc gasoline engine is a Kubota-designed twin-cylinder unit specific to this model. The CVT (belt-type continuously variable transmission) is fundamentally different from the hydrostatic VHT system used in the diesel RTVs. Body panels, suspension components, and accessories are Sidekick-specific. General Purpose and Worksite models share the same engine and drivetrain, differing in tire selection and included accessories.
Common RTV-XG850 Sidekick failure points and replacement parts
CVT belt wear: The belt-drive CVT is the primary wear item on the Sidekick. The belt requires replacement at manufacturer-recommended intervals, and aggressive driving accelerates wear. A failing belt causes power loss and slipping before eventual breakage.
Engine cooling: The gasoline engine generates significant heat at sustained high-speed operation. Keep the radiator clean and verify coolant levels before extended use.
Suspension components: The Sidekick's independent suspension uses automotive-style A-arms and shocks. Ball joints, bushings, and tie rod ends wear with off-road use and should be inspected regularly.
Commonly replaced RTV-XG850 Sidekick parts
- CVT drive belt
- Suspension ball joints, bushings, and tie rods
- Radiator and cooling system components
- Spark plugs and ignition components
- Body panels, fenders, and plastics
- Seats, harnesses, and ROPS components
- Bed liner and tailgate hardware
- Wheels, tires, and hub assemblies
Frequently asked questions
Q: Will other Kubota RTV parts fit the XG850 Sidekick
No. The Sidekick is an entirely separate platform from all diesel Kubota RTVs. The gasoline engine, CVT transmission, chassis, body panels, and suspension are all unique to the Sidekick. No components interchange with the RTV900, X900, RTV1100, RTV1140, or X1140 series.
Q: Is the Sidekick diesel or gasoline
The Sidekick is gasoline-powered with an 851cc twin-cylinder engine producing 48 hp. It is the most powerful and fastest Kubota UTV, reaching 40 mph. All other full-size Kubota RTVs (except the RTV400 and RTV500) are diesel-powered.
The Sidekick represented a major departure for Kubota when it launched in 2018. Where every other full-size Kubota RTV was built around a diesel engine and hydrostatic transmission optimized for low-speed torque and work duty, the Sidekick paired a high-output gasoline engine with a CVT belt drive to deliver recreational-oriented speed and acceleration. At 40 mph, it is nearly twice as fast as the diesel RTVs. The trade-off is that the Sidekick lacks the extreme low-speed torque and engine-braking characteristics of the hydrostatic diesel models. It is best suited for recreational use, property touring, hunting, and lighter work tasks where speed matters more than heavy hauling.
Q: What fuel does the XG850 Sidekick use
The Sidekick uses regular unleaded gasoline (87 octane minimum). Unlike the diesel RTV models, it does not require diesel fuel, glow plugs, or diesel-specific maintenance. Standard gasoline engine maintenance applies: spark plugs, air filter, oil changes, and fuel system service.
Q: What is the towing capacity of the Sidekick
The Sidekick has a towing capacity of approximately 1,000 lbs and a cargo bed payload of approximately 400 lbs. While capable for lighter towing, the diesel RTV models offer significantly more payload and towing capability for heavy work applications.
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