What is the weight difference between the John Deere 8RX 410 Tractor and 9R 440?

The John Deere 8RX 410 Tractor has a weight of 43300 lb. and the John Deere 9R 440 has a weight of 40660 lb., a difference of 2640 lb. The John Deere 8RX 410 Tractor has the higher weight.