I have been using my TT01 for drifting for a long time by just blocking up the diff's. Not 100% effective.
Then I changed to these 3Racing Solid Axles. FANTASTIC! Much better all round drift performance as I have them both fitted in the front and the rear of by car to improve the overall Ark of my drifts. I find that the control & responce of my car is greatly improved. The only 2 things you need to do to fit them to my car is, When fitting the bearing to each side of the diff I needed to remove the shaft cup to fit the bearing's. Very easy to do. All you need to do is roll back the rubber ring and push the little pin out underneth to release the shaft cup, Then put the bearing on and replace the shaft in reverse or removal. Secondly you have to buy a set of TT01 Universal shafts as the Shaft cups are much smaller than the standard TT01 dog bones are. If you want to Drift your TT01 these are an Excellent buy.