If you have a big bore kit or cylinder head upgrade to your motor, UMA Racing throttle bodies will help with the increases air intake. If you have a big bore kit + cylinder head/big valve upgrade to your motor, this is one of the most important supporting mods to change, together with a larger fuel injector.
**The V1 type throttle body has been discontinued for most brands. V1 > V2 conversion will need TPS sensor, TPS socket, injector holder optional.**
Yamaha YZF-R15 V2/ R125/MT-15/MT-125/WR125/ Fz150i Vixion (Non-VVA)
Yamaha Y15ZR/Jupiter MX King/Spark/Exciter/Sniper MXi/ T150
Yamaha Fz150i Vixion