| Part No. | Part Type | Description | Make | Machine | Model | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 615F | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 618F North American Edition | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 618R North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 620F North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 620R | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 622F North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 622R North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 625F North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 625R North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 630F North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 630R North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 635F North American | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 925D | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 930D | 
| H153329 | Performance Enhancement Kits | Dura-twin 4-in knife section (4-in double-cut knife section) | John Deere | Platform | 936D |