Why's my 224 so slow?!

[Swoopstake]

Seeking some advice. I recently put a brand new Predator 224 on my Coleman CT200U-EX. I installed a genuine Mikuni VM22 carb, with a curved intake, a straight pipe, and a Nibbi short/quick throttle and cable. I'm not expecting it to lighting fast but after riding it a few times I noticed that it's maxing out at 35 mph. I've seen videos where individuals have put a dead stock 224 on their bikes and did 35 mph. So what am I doing wrong? I should also mention that I did put the stock Hisun jackshaft on, it's not straight chained.

 

[turdbucket61]

You probably just need to change sprocket ratios. I don't do minibikes so I don't know which specific sprocket you need, but figure out how many teeth your sprockets are. If you want more speed, go for a smaller rear sprocket and/or a bigger front sprocket (engine).