{"product_id":"143cc-big-bore-kit","title":"143cc Big Bore Kit","description":"The TB Parts 143cc Big Bore Kit offers a significant performance upgrade for compatible mini bikes, increasing displacement to 143cc with its 60mm bore and a high-compression domed piston. This kit is engineered with an all-aluminum, ceramic-coated cylinder, which is lighter than traditional steel-sleeved cylinders, reduces friction for increased power, improves sealing, and enhances heat transfer for cooler operation and longer engine life.\n\nThe kit includes a lightweight 60mm high-compression piston with rings, pin, and clips, designed to safely run on pump gas (91-93 octane). It also comes with a complete head gasket kit, including cylinder head o-ring set and an exhaust gasket. The big bore kit requires no machining to the cases or other modifications, making it a straightforward bolt-on installation for those familiar with piston replacement.\n\nApplication for this kit is specified for Kawasaki KLX110 and KLX110L models from 2002 to the present, Suzuki DRZ110 models from 2003 to 2006, and the Kawasaki Z125 PRO. A crucial note for the Z125 PRO application states that it *must* be used with an aftermarket fuel controller to prevent a lean condition and potential engine damage.\n\nFor optimal performance, jetting suggestions are provided: a base tune of a #40 or #42 pilot jet and a #85 or #90 main jet. If an aftermarket performance exhaust is installed, a #42 pilot jet and a #90, #92, or #95 main jet are recommended.","brand":"TB Parts","offers":[{"title":"Default Title","offer_id":52663946707256,"sku":"TBW0986","price":179.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687721963.webp?v=1784331142","url":"https:\/\/store.motormia.co\/products\/143cc-big-bore-kit","provider":"MOTORMIA","version":"1.0","type":"link"}