• For Titan X/ Balrog X

4 Pcs x 97mm PU Wheel
2 Pcs x Drive Gears 44T 
2 Pcs x Drive Belts  HTD 5M 300mm

• For Hercules

4 Pcs x 97mm PU Wheel
2 Pcs x Drive Gears 44T 
2 Pcs x Drive Belts  HTD 5M 290mm

• For Titan 4wd

4 Pcs x 97mm PU Wheel
4 Pcs x Drive Gears 44T 
4 Pcs x Drive Belts  HTD 5M 300mm

Wheel durometer is 83A

Note: this kit works for the Balrog bamboo,Balrog X, Balrog S, Titan 2wd,Titan X, Titan 4wd.

and the Titan 4wd needs extra 1 pair of 44T pulley

Hercules use belt 285mm /290mm with 44t Pulley