{"product_id":"honda-ct70-z50-108cc-tb-108cc-big-bore-kit-v1-race-head-26mm-mikuni-vm26-kit","title":"Honda CT70 Z50 108cc TB 108cc Big Bore Kit, V1 Race Head, \u0026 26mm Mikuni VM26 Kit","description":"\u003ch2\u003eTB Parts 108cc Big Bore Race Kit with V1 Head and Mikuni VM26 Carb\u003c\/h2\u003e\n\u003cp\u003eWake up your stock Honda horizontal engine with one of the best bolt-on performance kits available for the Z50 and 3-speed CT70.\u003c\/p\u003e\n\u003cp\u003eThis TB Parts 108cc kit combines a V1 Race Head, 52mm big bore cylinder and piston kit, and a Mikuni VM26 carb setup to turn your stock engine into a much stronger 108cc setup without boring the cases.\u003c\/p\u003e\n\u003cp\u003eThe V1 race head uses larger 25\/22mm stainless 21-4N valves, improved porting, a race cam, and better valve geometry to help the engine breathe, rev quicker, and pull harder through the powerband. Paired with the lightweight high-compression 52mm piston and proven VM26 carb, this kit delivers serious performance while still keeping the install straightforward.\u003c\/p\u003e\n\u003cp\u003eNo case boring required. Bolt it on, tune it, and let it eat.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eV1 Race Head with 25\/22mm stainless 21-4N valves\u003c\/li\u003e\n\u003cli\u003e21mm intake port with oversized exhaust port\u003c\/li\u003e\n\u003cli\u003eRace camshaft and cam sprocket\u003c\/li\u003e\n\u003cli\u003e52mm aluminum cylinder with steel sleeve\u003c\/li\u003e\n\u003cli\u003e52mm high-compression lightweight piston kit\u003c\/li\u003e\n\u003cli\u003eDesigned for 91+ octane pump gas\u003c\/li\u003e\n\u003cli\u003e108cc top end gasket kit included\u003c\/li\u003e\n\u003cli\u003eClutch cover gasket and center case gasket included\u003c\/li\u003e\n\u003cli\u003eMikuni VM26 carb kit with ported manifold\u003c\/li\u003e\n\u003cli\u003eIncludes carb gaskets, hardware, and throttle cable\u003c\/li\u003e\n\u003cli\u003eNo case boring required\u003c\/li\u003e\n\u003cli\u003eReplacement parts available from Bart Moto Co\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHonda Z50: 1968–1979\u003c\/li\u003e\n\u003cli\u003eHonda CT70 3-Speed: 1969–1979\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eThere are no printed installation instructions included. If you are comfortable replacing a piston and top end, this kit is a straightforward install. If you are not experienced with engine work, we recommend having a qualified technician install it or using a factory \u003ca href=\"https:\/\/bartmotoco.com\/products\/honda-motorcycle-repair-manual-50-110-ohc-singles\"\u003eshop manual\u003c\/a\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA VM26 carb kit requires a compatible throttle.\u003c\/li\u003e\n\u003cli\u003eCT70 models require a \u003ca href=\"https:\/\/bartmotoco.com\/products\/two-inlet-fuel-petcock\"\u003edual-feed petcock\u003c\/a\u003e to handle the two fuel tank lines.\u003c\/li\u003e\n\u003cli\u003eIf using a stroker crank, use the correct 12V piston along with a \u003ca href=\"https:\/\/bartmotoco.com\/products\/honda-ct70-6-volt-engine-high-volume-oil-pump\"\u003ehigh-volume oil pump\u003c\/a\u003e and shaft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eFor use only with 1968–1979 Z50 and 1969–1979 3-speed CT70 engines.\u003c\/p\u003e","brand":"TB Parts","offers":[{"title":"Default Title","offer_id":48800852508916,"sku":"C7Z5-TBW-9094-108","price":642.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/6465\/3556\/files\/9094.jpg?v=1783005965","url":"https:\/\/bartmotoco.com\/products\/honda-ct70-z50-108cc-tb-108cc-big-bore-kit-v1-race-head-26mm-mikuni-vm26-kit","provider":"Bart Moto Co","version":"1.0","type":"link"}