Kubota KX121-3 Tracks
The Kubota KX121-3 takes 350x54.5x86 rubber tracks (350 mm, about 14 in wide; 54.5 mm pitch; 86 links). An alternate size is 300x52.5x90 (steel).
9063lb weight
42hp
Fitment detail
| Configuration | Size | Width | Pitch | Links |
|---|---|---|---|---|
| Primary | 350x54.5x86 |
350 mm / ~14" | 54.5 mm | 86 |
| Alternate | 300x52.5x90 (steel) |
300 mm / ~12" | 52.5 mm | 90 |
Specifications and sources
| Spec | Value | Source |
|---|---|---|
| Primary track size | 350x54.5x86 | skidsteers.com |
| Alternate track sizes | 300x52.5x90 (steel) | skidsteers.com |
| Operating weight | 9063 lb | ritchiespecs.com |
| Engine power | 42 hp | ritchiespecs.com |
Tracks you can buy for the KX121-3
Available tread patterns :
- Steel 2
- MX 1
- Block 1
300x52.5wx90 2 options
| Tread | Duty | Price | Stock | From |
|---|---|---|---|---|
| Steel | Extreme | $3281.40 / set | no | skidsteers.com |
| Steel | Extreme | $3716.10 / set | no | skidsteers.com |
350x54.5x86 — 14" wide 2 options
| Tread | Duty | Price | Stock | From |
|---|---|---|---|---|
| MX | HD | $2255.40 / set | yes | skidsteers.com |
| Block | — | $1095 / track | yes | grizzlyrubbertracks.com |
Available from
| Seller | Observed price | Options seen | Ships | Checked |
|---|---|---|---|---|
| skidsteers.com | $3716.10 / set | Extreme Duty Steel Tracks · extreme duty | not stated | 2026-08-19 |
These tracks also fit
2 other machines take the KX121-3's primary size (350x54.5x86):
Kubota track size chart: every model →
Undercarriage parts for the KX121-3
| Component | Observed price | From | Checked |
|---|---|---|---|
| Idler front | $431.32 | skidsteers.com | 2026-08-18 |
| Roller | $137.31–$199.59 | skidsteers.com | 2026-08-18 |
| Sprocket | $162.44 | skidsteers.com | 2026-08-18 |
Before you order
Width, pitch, and link count must all match — measure your current tracks to confirm, and check your operator's manual for serial-number-specific variations.
Get notified when fitment data is added for the Kubota KX121-3