Originally Posted by sosidge

The 3Racing gears are a different ratio (33 and 35 spurs vs. 37 as standard). They are also a weak material and a poor moulding - the counter gear in the set is unusable.

We are allowed to run them locally, you have to run them to compete on the bigger tracks, but I get through a couple a season, and I'm quite easy on the car - they may not be legal where you race.