{"product_id":"tbparts-143cc-big-bore-kit-60mm-kawasaki-klx110-all-models-z125","title":"TBParts 143cc Big Bore Kit (60mm) – Kawasaki KLX110 (All Models) \u0026 Z125","description":"\u003ch2\u003eTBParts 143cc Big Bore Kit (60mm) – Kawasaki KLX110 \u0026amp; Z125\u003c\/h2\u003e\u003cp\u003eA true bolt-on big bore upgrade for all Kawasaki KLX110 models and the Z125 — no case boring, no machining, no modifications required. The TBParts 143cc kit pairs a ceramic-coated all-aluminum 60mm cylinder with a lightweight high-compression piston for power gains of over 50% on pump gas. High quality parts, straightforward installation, and an outstanding value.\u003c\/p\u003e\u003ch3\u003eKit Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e60mm bore — 7mm larger than the stock 53mm piston\u003c\/li\u003e\n\u003cli\u003e10.5:1 high compression domed piston with rings, pin \u0026amp; clips\u003c\/li\u003e\n\u003cli\u003eCeramic-coated all-aluminum cylinder (no steel sleeve) — lighter, lower friction, better heat transfer\u003c\/li\u003e\n\u003cli\u003eCompatible with stock, Zongchen ZS, and older V1 cylinder heads\u003c\/li\u003e\n\u003cli\u003eRuns on 91+ octane pump gas\u003c\/li\u003e\n\u003cli\u003eHead gasket kit with new dowel pins included\u003c\/li\u003e\n\u003cli\u003eNo case boring required — bolt on and go\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eJetting \u0026amp; Tuning\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eKLX110 (Carbureted):\u003c\/strong\u003e Base tune — Pilot jet #40 or #42, main jet #85 or #90. With aftermarket exhaust: Pilot #42, main #90, #92, or #95.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePilot jet kit: \u003ca href=\"https:\/\/howlingmoto.com\/products\/tb-pilot-jet-kit\"\u003eTBW1458\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eMain jet kit: \u003ca href=\"https:\/\/howlingmoto.com\/products\/tb-main-jet-kit-large-klx110-all-models\"\u003eTBW0294\u003c\/a\u003e \u0026amp; \u003ca href=\"https:\/\/howlingmoto.com\/products\/tb-main-jet-kit-large-tbparts-20mm-carb\"\u003eTBW1584\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eKawasaki Z125 (Fuel Injected):\u003c\/strong\u003e An aftermarket fuel controller is required to prevent running lean. TBParts does not sell or provide tuning files for the Z125.\u003c\/p\u003e\u003cp\u003eWith proper tuning, good fuel, and reasonable riding conditions, \u003cstrong\u003e8,000+ miles\u003c\/strong\u003e have been documented on these kits.\u003c\/p\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eParts install in the same manner as OEM components. No instructions are included — if you can replace a piston, you can install this kit. If you have no engine experience, professional installation or the Kawasaki shop manual is strongly recommended. See the \u003ca href=\"https:\/\/www.tbparts.com\/kawasaki\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eTBParts Kawasaki Tech Section\u003c\/a\u003e for FAQs.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eKawasaki KLX110 — All Models \u0026amp; Years\u003c\/li\u003e\n\u003cli\u003eKawasaki Z125 Pro — All Years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TBParts","offers":[{"title":"Default Title","offer_id":46646236938481,"sku":"TBW9471","price":204.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/1348\/7857\/files\/9471-1000x880.webp?v=1762343775","url":"https:\/\/howlingmoto.com\/products\/tbparts-143cc-big-bore-kit-60mm-kawasaki-klx110-all-models-z125","provider":"Howling Moto","version":"1.0","type":"link"}