Complete live axle kits are available along with torque conv. kits for the predator at go karts USA , or , DIY maybe SYCARMS ( on this forum )
Looks to me like you have to small a sprocket for that large of a tire - high gear ratio . Go karts are like potato chips, you can't just have one . One option would be to mount your engine higher 2x2 , or 2x3 square tubing and drill some holes . That would allow you to mount a larger dia wheel sprocket , longer chain for a lower gear ratio - more bottom end . Tools involved hacksaw / chopsaw , 3\8 drill bit . Then you can take your saved money and buy another kart with a live axle......and another.....and , you get it .
MO BUGGY!!!!
Oh , Welcome to the Site .
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2011 BMS KING COBRA 150 Sold
YERF DOG SPIDERBOX's Sold
YERF DOG 3203's. Sold
MANCO SILVER FOX. Sold
2009 POLARIS 500 HO SPORTSMAN 4X4
2002 POLARIS 500 HO SPORTSMAN 4X4
2000 POLARIS MAGNUM 2X4
HALF A DOZEN CHEVY 4X4's
NEED-MO-BUGGY 
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