You quoted the wrong part. That is the rotor for the original 4300 and 5800. The 13.5 has the larger front bearing and takes a different rotor.irvan36mm said:Jake- Lefthander's got em. $16.00
If the sintered one is illegal at your track,you shouldn't go wrong w/a direct replacement one. If you don't already have one,look into getting a motor cooler,either from Lefthander or Crazy Ronnie. It really helps out the motor from thermalling,thus saving the rotor.
Oops! Forgot the 13.5 had the larger bearing! No listings for the 13.5 rotor @ Lefthander.ta_man said:You quoted the wrong part. That is the rotor for the original 4300 and 5800. The 13.5 has the larger front bearing and takes a different rotor.
So does Tower:Sonny B said:NOV5907. Looks like Horizon has them in stock.
You possibly have one of the early models. Now the 13.5s come with the big bearing.SDL98 said:Mine actually has the small bearing and same rotor as the 4300 replacement