TBparts - 186cc Big Bore Performance Kit (64mm) and Oil Cooler Kit: This is the biggest grom bore kit on the market at 186cc that does not require case boring. Bolt right
benelli tnt 125 big bore kit - Acquista benelli tnt 125 big bore kit con spedizione gratuita su AliExpress version
Benelli TNT 135 US Owners Group - Got my big bore kit and injector in today as well, already have to DC cam, A-Racer stand alone ECU, and tons of porting on