UMA Racing 63mm (183cc) Big Bore Cylinder Kit - Yamaha R15v3 VVA

1.60 kg
No tax

UMA racing big bore cylinder kits are plug and play ready for your machine, built to standards exceeding the manufacturers for worry free use, on the street or track. Ceramic block material will withstand higher engine temperatures. Available with forged, flat or high compression pistons.

This performance big bore kit will increase your engine displacement up to 183cc with the stock crankshaft stroke! We may have stroker kits also available for this model. We recommend you to upgrade your exhaust, fuel injector, throttle body, camshafts, ECU, cylinder head for supporting mods.


Available with dome/normal piston


  • Racing cylinder block
  • Piston
  • Piston ring set and circlip
  • Piston wrist pin
  • Gaskets


    Yamaha YZF-R15V3/XSR155/MT-15/WR155 (VVA)

    Yamaha YZF-R125/MT-125 (VVA)

    Yamaha Y16ZR/Jupiter MX King/Exciter/Sniper T155

    Yamaha NVX155 NVX125/Aerox 155

    Yamaha Zuma/BWS 125 (VVA)

    Yamaha Cygnus Gryphus / X-Force 125 155 (VVA)

    Yamaha NMAX 125 155 (VVA)

    Yamaha X-MAX/S-MAX 125 155 (VVA)

    Yamaha Tricity 125 155 (VVA)

    Build quaility similar to Malossi, Polini, Athena, Kawahara, etc big bore cylinder kits.


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