TB 143cc Bore Kit, Race Head V2, and Intake Kit – 2010 & Up Models ott Air-cooled engines run hotter when

Air-cooled engines run hotter when modified (i

The addition of roller rocker arms and a new camshaft are the biggest changes

Z-50 73-78

They are machined from solid 4140 Chrome Moly and Cerakoted in Bronze finish

UTV and many other applications

TB 143cc Bore Kit, Race Head V2, and Intake Kit – 2010 & Up Models ott Air-cooled engines run hotter when143cc Race Head V2, Big Bore Kit, and Intake Kit: TBW9199 Race Head V2 Forged Aluminum Roller Rockers, 30mm intake valve, 24. 5mm exhaust valve, 27mm intake port, 23mm exhaust port (valves installed). Race Camshaft V2 1 for Race Head V2 Ceramic coated all aluminum cylinder (no steel sleeve) New in 2020 Updated Lightweight high compression domed 60mm piston with rings, pin, & clips Head gasket kit includes the cylinder head o ring set and an exhaust