Thorp hard anodized aluminum gears.
Early parts:
#5101 left gear
#5102 right gear
#5103 Diff gear
![Image](https://i.postimg.cc/ZRswQXYN/F6-DCBE11-45-E7-414-F-BDE7-F0-DB58-DFB8-D9.jpg)
![Image](https://i.postimg.cc/bvhdqBrS/35-F3-E6-D2-4303-49-D9-A516-CC2-B48-F602-FA.jpg)
Later they came out with a center bearing diff gear, which Losi also did with it’s plastic gears. Unlike Losi that used two special 7/64” wide bearings, Thorp uses two of the standard 1/8” wide bearings. The #5108 right side gear is machined slightly deeper than the #5102 right side gear to accommodate the two bearings.
Center bearing diff parts:
#5101 left gear
#5108 right gear
#5107 Diff gear
![Image](https://i.postimg.cc/2SCdhvZJ/C12781-E6-43-D6-466-F-BD70-271989516-E15.jpg)
![Image](https://i.postimg.cc/K8Kt1wm9/C1489-B1-B-2-C1-A-4-D75-8383-706-D15-EF6-F58.jpg)
![Image](https://i.postimg.cc/pLvszP10/E4898-BF9-5-ADC-45-E4-BF01-99-B574-F2-D8-F8.jpg)
Top gear and side gears are made from Delrin. Notice the side gears have been hollowed out/lightened..like the Losi low friction gear set.
![Image](https://i.postimg.cc/BQ7VWrhN/60-C4-D7-F3-D002-4-F4-C-97-C3-5-A7-BE4651-C9-D.jpg)
![Image](https://i.postimg.cc/WzGXH49f/B7-C1-E694-EE4-F-48-BB-ABB8-1290-E5-C54155.jpg)
![Image](https://i.postimg.cc/rFjrZcwZ/0-AFBF871-3-C68-472-E-AAA7-15-D128187-F7-A.jpg)
More info: https://www.rc10talk.com/viewtopic.php?f=27&t=39934