Wheel Spacers are made for the Kubota RTV, BX, and B Series Tractors, John Deere Gator, HPX, and XUV, Polaris Ranger, and various Cub Cadet and Wheel Horse Tractors.
NEWEST PRODUCT: Kubota "B" Series Tractor Wheel Spacers...for the B3030, B7500, and many other "B"s...available for both Front and Rear Axles. This is a photo of a 3" wide Front Spacer. The Rears are very similar, but with a larger bolt pattern and larger bolts. This photo shows a spacer prior to painting as the details show up better without paint. Pricing is $255 per pair for the Front Spacers and $285 per pair for the Rear Spacers, plus $25 shipping US domestic.
A similar Wheel Spacer is available for the Kubota BX24 Compact Tractor to give improved safety and stability to what is otherwise a top heavy and tippy nachine. They have the proper 5x4.5" bolt pattern, 1/2"x20 threads, and 60 degree countersink to fit the Kubota BX24. Each spacer is custom made from 1/4" plate steel and generously welded. The photo shows 2" wide spacers (but they can also be made in other widths if you prefer) for a base price of $194.95/pair plus $5/half inch for widths over 2.5" (includes shipping and lug bolts). Additional photos are at this link.
This is a 5" wide Kubota spacer built to help match crop row widths. Spacers are custom made in sizes from 1" to 5" wide...from $179.95/pair (including shipping and lug bolts.)
An example of 5" Spacers for Polaris Ranger...for agricultural use, to match wheelbase to crop row widths, or for enhanced hillside stability. Available 2.5" to 6" wide from $194.95/pair, shipping included. Additional photos on "Third Product" page.
Convenient to install and fully length adjustable tracks are available from The Tracks Company. Polaris Ranger 6x6 Tracks or John Deere Gator / Cub Cadet pattern tracks will turn these machines into a half-track vehicle and enhance traction, stability, and flotation.
$179.95/pair (includes S/H and bolts) for Kubota RTV and John Deere UTVs (Add $5/half inch width over 2.5")
$194.95/pair (includes S/H and bolts) for Kubota BX Series (Add $5/half inch width over 2.5")
$194.95/pair (includes S/H) for Polaris Ranger Spacers (Add $6/half inch width over 3")
Notes: Wheel Spacers are required for installation of rear tracks. Prices and specifications subject to change without prior notice. Photos may not reflect most current modifications. Full payment is due prior to shipping. No returns of custom orders (rear tracks and spacers) except by prior arrangement. All refunds for approved returns or cancellations subject to 15% fee.
NEWEST PRODUCT: Kubota "B" Series Tractor Wheel Spacers...for the B3030, B7500, and many other "B"s...available for both Front and Rear Axles. This is a photo of a 3" wide Front Spacer. The Rears are very similar, but with a larger bolt pattern and larger bolts. This photo shows a spacer prior to painting as the details show up better without paint. Pricing is $255 per pair for the Front Spacers and $285 per pair for the Rear Spacers, plus $25 shipping US domestic.
A similar Wheel Spacer is available for the Kubota BX24 Compact Tractor to give improved safety and stability to what is otherwise a top heavy and tippy nachine. They have the proper 5x4.5" bolt pattern, 1/2"x20 threads, and 60 degree countersink to fit the Kubota BX24. Each spacer is custom made from 1/4" plate steel and generously welded. The photo shows 2" wide spacers (but they can also be made in other widths if you prefer) for a base price of $194.95/pair plus $5/half inch for widths over 2.5" (includes shipping and lug bolts). 
This is a 5" wide Kubota spacer built to help match crop row widths. Spacers are custom made in sizes from 1" to 5" wide...from $179.95/pair (including shipping and lug bolts.) 
An example of 5" Spacers for Polaris Ranger...for agricultural use, to match wheelbase to crop row widths, or for enhanced hillside stability. Available 2.5" to 6" wide from $194.95/pair, shipping included. Additional photos on "
18" Tracks for Polaris Ranger 6x6 
12" Polaris Ranger 6x6 Tracks 
18" Polaris Ranger 6x6 Tracks