{"product_id":"koso-170cc-big-bore-cylinder-kit-honda-grom-125-monkey-61mm-forged-mb623002","title":"Koso 170cc Big Bore Cylinder Kit Honda Grom 125 Monkey 61mm Forged MB623002","description":"\u003ch2\u003eThe Koso 170cc Big Bore Cylinder Kit Honda Grom 125 Monkey 61mm Forged MB623002\u003c\/h2\u003e\n\n\u003cp\u003eTransform your small-bore ride into a high-performance machine with the Koso North America 170cc Big Bore Kit. Specifically engineered for the Honda Grom and Monkey, this kit increases displacement to 170cc, providing a massive boost in torque and acceleration. The kit features a high-quality aluminum cylinder with a ceramic coating for superior heat dissipation and a 61mm forged piston designed to handle a 11.5:1 compression ratio, ensuring your engine remains reliable even under increased power demands.\u003c\/p\u003e\n\n\u003cp\u003eTake your street performance to the next level when you buy Koso Big Bore kits to unlock the true potential of your 4-stroke engine. This Honda Grom replacement cylinder kit is a comprehensive performance package that includes everything needed for the upgrade, including rings, pin, gaskets, and banjo bolts. Whether you are building a custom Honda Monkey service kit or looking for a MSX125 Grom SF power upgrade, Koso’s precision engineering delivers the displacement and durability required for serious enthusiasts.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features Koso 170cc Big Bore Cylinder Kit:\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eCeramic Coated Aluminum Cylinder:\u003c\/strong\u003e Provides excellent heat transfer and durability compared to standard cast iron sleeves.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003e61mm Forged Piston:\u003c\/strong\u003e Offers superior strength and lightweight performance to handle the 11.5:1 compression ratio.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eComplete Bolt-On Kit:\u003c\/strong\u003e Includes the cylinder, piston, rings, wrist pin, gasket kit, and necessary banjo bolts for a streamlined installation.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eIncreased Displacement:\u003c\/strong\u003e Jumps your engine from 125cc to 170cc for significant gains in horsepower and mid-range pull.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment List:\u003c\/h3\u003e\n\n\u003cp\u003e2014-2020 Honda Grom 125 \/ ABS\u003cbr\u003e\n2013-2018 Honda MSX125 Grom \/ SF\u003cbr\u003e\n2019-2021 Honda Monkey \/ ABS\u003c\/p\u003e\n\n\u003ch3\u003eFAQ:\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will this Koso big bore kit fit my Honda Grom 125?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this 170cc kit is compatible with all Honda Grom 125 models from 2014 through 2020, including the ABS and SF versions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need a special exhaust to run this 170cc big bore kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, a proper high-flow exhaust system must be used with this kit to prevent re-flow pressure and excessive heat buildup.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this include the camshaft?\u003c\/strong\u003e\u003cbr\u003e\nA: No, the camshaft is an optional upgrade; however, this kit delivers its best results when paired with a Koso performance camshaft.\u003c\/p\u003e\n\n\u003cp\u003eGive your mini-moto the heart of a champion with the highest quality performance parts on the market. \u003cstrong\u003eMoto-House MX – Choice of Champions\u003c\/strong\u003e – is located in Clermont\/Montverde, FL. the best motocross shop in Central Florida.\u003c\/p\u003e","brand":"Koso North America","offers":[{"title":"Default Title","offer_id":42154832101459,"sku":"MB623002","price":481.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/koso-big-bore-cylinder-kit-170-cc-mb623002-honda-grommonkey-358097.jpg?v=1735344706","url":"https:\/\/motohousemx.com\/products\/koso-170cc-big-bore-cylinder-kit-honda-grom-125-monkey-61mm-forged-mb623002","provider":"Moto-House MX","version":"1.0","type":"link"}