Hello guys, I need some help with gearing. At my club we race 21.5 stock and they use 2.2 fdr.... The problem is that I cannot fit a bigger pinion than 25t with the 72t spur. Is there a solution for this? I know I can change the spur with a smaller one but at the moment I don't have it and I can't find to buy locally. I need this for Sunday so I better find a solution how to make it faster with a 2.7fdr. I am using the speed passion 21.5R. Do you think I can fit an MMM sensor board ( red) so I can set timing more? This way will I have a hot motor result?
Please help.