straight cut syncro gears, 3rd, 24-32teeth for 12-09
these 24-32 ( 1,33) gears are interchangeable with the delivered 20/24 ( 1,2)for the 3rd gear. This is a solution to find the best performance for each track.
There´s also possible, to use the delivered 20/24 3rd gear as 4th, so you will have a close ratio gearkit for very short tracks and hillclimbs!