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First ride Lifan 140 YX140 race head conversion
Fully built and tested 114cc V2 race head engine with pulls start !!
Yx140 cylinder head versus ooracing Red TAG head.
YX140cc gets race roller rockers | Stock Camshaft
How To Make Your Pit Bike More POWERFUL!
yx 140 tuned 10000rpm
First Mod Everyone Should Do After Buying A Chinese Pit/Dirt Bike To Improve Performance!
Kawimx on Apollo quad with Lifan 140 engine with race head and Z40 cam.
Pit Bike Speed Test - 14 Tooth vs 16 Tooth Front Sprocket 110cc
"Pit Bike Powerhouse: Unleashing Performance and Reliability" Pitbikesonic #76.
DON'T FALL FOR SCAM WHEN BUYING A Z40 CAM FOR PITBIKE
He Was Scared To Hit The Gas On His New Pitbike
