BMB 49mm Iron Sleeve Beef++ Pro Class Racing engine

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  • Regular price $500.00
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These are our stage 2 for the pro class in motorized bicycle racing these engines are fast!!!! 

-49mm iron sleeve 

-race polish and flowed case 

-BMB X2 reedblock 

-High comp head

-----these engines require a 21mm carb and a 85cc dirtbike to run correctly and make all the power available ----