I found this post searching for a cheaper set of belts for my Kubota
G2160 diesel. It has the small 33" dual belts which engage the PTO at the front of the tractor like the
G5200 series does
I called the Kubota dealer and got the part number - K2110-25032. This part number is for a *matched pair* and the dealer's cost was $98 plus tax. I had found them earlier (same part number) on eBay for $87 for the pair with free shipping, so I ordered them there. Saved almost $20
They came in the genuine Kubota sleeve and the belts say "Bando W1000 SB-31" on them. Thinking that I might one day need another pair. I began searching for a better price for the Bando SB-31 and that's how I found this thread
I did go to the manufacturer's website and read up on the SB series of belts. They *are* indeed special. First, they are sold in matched pairs. Second, the thickness of the belt (inside diameter vs outside diameter) is thinner because they are specially made to be bent backwards by the idler which tightens the belts when you engage the PTO - They are NOT toothed
I did not find them cheaper than $87 anywhere, but since the pair I'm replacing (they're not completely worn out or broken, but I believe in changing things before they break) are 12 years old and have outlasted the original deck on my tractor, so I'm not *too* concerned about the $87 price
Hopefully my comments may help someone else who is either looking for this Kubota part number, or for a Bando SB-31 belt
Don