Are these numbers invented?

No. Engine HP, weight, and rear lift come from catalog Facts; PTO/hitch only from verified overlays. Missing Facts show as — — we never invent shaft ratings.

How do I check attachments?

Open the Fit checker with Kioti CS2220 or Kubota BX23S, pick an attachment type and model, and read Pass/Fail/Partial on hitch, PTO, and lift.

Kioti CS2220 vs Kubota BX23S

Both sit in the Sub-Compact class with similar engine horsepower (21 vs 21.6 HP). Below: catalog Facts for engine horsepower, weight, and rear lift; PTO and hitch only when verified. The decision points call out who leads on each Fact — engine HP is not a substitute for PTO HP.

Engine horsepower is not PTO horsepower. Missing Facts show as — — we never invent shaft ratings.

Kioti CS2220 Profile →Kubota BX23S Profile →Fit checker →

How to choose

Kubota BX23S lists higher engine horsepower (21.6 vs 21 HP). That is not a PTO advantage — confirm shaft power separately before buying cutters or tillers.
The gap vs Kioti CS2220 is small (~0.6 HP) — rear lift or hitch class often matter more day to day.
Hitch differs: Kioti CS2220 (Category I) vs Kubota BX23S (Limited Category I). Implement sheets must name the matching class — adapters do not add lift.
Kubota BX23S has the higher verified PTO rating (17.7 vs 16.3 PTO HP) — that is the Fact for cutters, tillers, and snow blowers, not engine HP.
Next step: open the Fit checker with the tractor that wins on your heaviest implement, and screen hitch, PTO, and lift against that attachment.

When to pick each

Choose Kioti CS2220 when you need implement sheets that explicitly list Category I.

Choose Kubota BX23S when you need higher verified PTO (17.7 vs 16.3 PTO HP) for cutters, tillers, or snow blowers, or implement sheets that explicitly list Limited Category I.

Spec comparison

Spec	Kioti CS2220	Kubota BX23S
Size class	Sub-Compact	Sub-Compact
Engine horsepower	21 HP	21.6 HP
Operating weight	1,554 lbs	1,598 lbs
Rear hitch lift @ 24″	700 lbs @ 24″	680 lbs @ 24″
Hitch category	Category I	Limited Category I
PTO horsepower	16.3 PTO HP	17.7 PTO HP
PTO RPM	540 RPM	540 RPM

Sources

FAQ

Which is better — Kioti CS2220 or Kubota BX23S?: Kubota BX23S lists higher engine horsepower (21.6 vs 21 HP). That is not a PTO advantage — confirm shaft power separately before buying cutters or tillers. The gap vs Kioti CS2220 is small (~0.6 HP) — rear lift or hitch class often matter more day to day. Choose Kioti CS2220 when you need implement sheets that explicitly list Category I. Choose Kubota BX23S when you need higher verified PTO (17.7 vs 16.3 PTO HP) for cutters, tillers, or snow blowers, or implement sheets that explicitly list Limited Category I. Use the Fit checker for your heaviest attachment instead of comparing engine HP alone.
Are these numbers invented?: No. Engine HP, weight, and rear lift come from catalog Facts; PTO/hitch only from verified overlays. Missing Facts show as — — we never invent shaft ratings.
How do I check attachments?: Open the Fit checker with Kioti CS2220 or Kubota BX23S, pick an attachment type and model, and read Pass/Fail/Partial on hitch, PTO, and lift.