450G - BULLDOZER 0130 TRACK SYSTEMS Parts group 0130 TRACK SYSTEMS 0130 TRACK SYSTEMS . Chain Guides (Dozers) Chain Guides (Loaders) Single-Flange Track Roller (Loaders) Double-Flange Track Roller (Loaders) Single-Flange Track Roller (Dozers) Double-Flange Track Roller (450G & 550G Dozers) ( - XXXXXX) Double-Flange Track Roller (450G, 550G & 650G Dozers) (XXXXXX - ) Drive Sprocket (Loaders) Drive Sprocket (Dozers) Upper Track Carrier Roller (Dozers) Upper Track Carrier Roller (Loaders) ( - XXXXXX) Carrier Roller (455G Loader) (Split Flange) Front Track Idler (Dozers) Front Track Idler (Loaders) Front Track Idler (Loaders) Track Idler Spring Track Frame Cover & Step ( - 770862) Track Frame Cover & Step (770863 - ) Hydraulic Track Tension Adjuster (Dozers) ( - 745426) Hydraulic Track Tension Adjuster (Loaders) ( - 745426) Hydraulic Track Tension Adjuster (Dozers) (745427 - ) Hydraulic Track Tension Adjuster (Loaders) (745427 - ) Counterweight, Front Idler Sprocket Counterweight (Loaders-Standard Unit Only) Track Frames & Rock Guards (Dozers) Track Frames & Rock Guards (Loaders)