You can't go wrong with original tamiya hop ups...perfect quality and lots of spares if a part wears out.
This is highly recommended specially for stock class...gives consistent speed during exit and banking.
i wasn't very happy about the tamiya's standard diff in the m-05, so i was looking for something else. on the internet i found that this set should be the best option, however, i have a weird problem with my car since i installed this: when i pull up after a turn, my car always pull's to the left. i must note that i also - at the same time - did install a carson cup motor and a 18 tooth pinion gear. So i don't know the exact reason yet. But i expected a better result...
Use this on my M05 pro. Give me different feel of driving of my M05 pro. Though adjusting the ball diff. may prove a bit tricky and experience involve. But once you get the right tightness, you are on your way to your best lap :)
This diffirential made all the difference in my M05Pro. The handling was transformed compared to the TA03 ball diff.
The front end is more predictable and control is better, also it's adjustable without tearing all the car down like with the TA03 diff. This is by far the best differential for the M05. Buy it, you won't regret it!