MAV™ Straw Chopper Rotor Upgrade | John Deere Combines
The MAV™ Straw Chopper rotor upgrade provides a replacement chopper rotor with MAV™ fan shrouds. It provides fine cut straw and delivers a wider spread.

- Replaces factory straw chopper rotor only
- Factory chaff spreading system remains in use
- Chaff is spread with straw on STS models
- Spreads 25' to 45' wide with use of 12 vane tailboard
- Reverse blades when initial blade edge is worn
- Residue is projected farther - minimizing dust around the combine
- Achieve an even distribution of residue across width of the cutter bar
The MAV™ Straw Chopper Rotor Upgrade is available for:
| Combine Model: | Order # | Notes |
|---|---|---|
| 9860 STS - Premuim Chopper | 300-110 | For STS Extra fine cut premium rotor (120 blades) |
| 9650, 9750 STS Pre 2003 | 300-050 | |
| WTS | 300-100 | For WTS premium chopper includes 12 Vane MAV Tailboard |
| T670 | 300-130 | For T670 premium chopper includes 12 Vane MAV Tailboard |
| 9650/9660 Walker | 300-090 | |
| 9550/9560 Walker | 350-080 | |
| 9600/9610 Walker | 300-040 | |
| 9500/9510 Walker | 300-030 | |
| 9400/9410 Walker | 300-120 | |
| CTSII | 300-070 | |
| 8820 | 300-020 | |
| 7720, 7721 | 300-010 |
Upgrade Options Avalable:
| Upgrade Option: | Order # | Notes |
|---|---|---|
| Slow Speed Drive - Corn | 390-020 | 9000 Series Walkers |
| STS 12 Vane MAV Tailboard | 390-110 | Recommended for Pre 2003 STS model years |
| Bearing Replacement Kit - Walker | 390-050 | 2 bearing assemblies - 9000 Series Walker Combines |
| Knifebar 9500 / 7720 Walker | 390-070 | Upgraded knifebar - JD Factory floor spacing |
| Knifebar 9600 / 8820 Walker | 390-080 | Upgraded knifebar - JD Factory floor spacing |
| Fin Upgrade Kit 9500 / CTS | 390-120 | 9500 / CTS Fin Upgrade kit |
| Fin Upgrade Kit 9600 / CTS | 390-010 | 9600 31in Fin Upgrade kit |
DOWNLOAD a PDF Brochure (large file - may take a moment)
