{"product_id":"dhm-high-compression-stock-bore-piston-2022-honda-grom-monkey-50mm-13-1","title":"DHM High Compression Stock Bore Piston – 2022+ Honda Grom \u0026 Monkey (50mm, 13:1)","description":"\u003cp\u003e\u003cstrong\u003eDHMotoring Stock Bore Racing Piston for the 2022+ Honda Grom and Monkey\u003c\/strong\u003e delivers a significant compression boost without requiring a bore kit — a direct bolt-in performance upgrade for your 125cc engine.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e~13:1 high compression ratio for increased power and throttle response\u003c\/li\u003e\n\u003cli\u003e50mm stock bore — no machining required\u003c\/li\u003e\n\u003cli\u003eLarger ring and skirt oiling holes for improved lubrication\u003c\/li\u003e\n\u003cli\u003eLarger oil spring for better ring seal\u003c\/li\u003e\n\u003cli\u003eOEM-sized skirt area for proper fitment\u003c\/li\u003e\n\u003cli\u003eComplete racing piston ring kit with pins and circlips included\u003c\/li\u003e\n\u003cli\u003eBase gasket spacer and head gasket included\u003c\/li\u003e\n\u003cli\u003eCompatible with clear big valve head (27\/22 valve diameters)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRequirements\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRequires NGK CR9E spark plug\u003c\/li\u003e\n\u003cli\u003eMinimum 91 octane fuel required\u003c\/li\u003e\n\u003cli\u003eECU flash or engine management system required (aRacer or equivalent)\u003c\/li\u003e\n\u003cli\u003eProfessional installation highly recommended\u003c\/li\u003e\n\u003cli\u003eRing gaps must be set prior to installation\u003c\/li\u003e\n\u003cli\u003eBase gaskets must be installed properly — setup sheet included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Ring End Gaps\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTop ring: .007\"–.008\"\u003c\/li\u003e\n\u003cli\u003eBottom ring: .009\"–.010\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSKU: DHM-HCSBP-22\u003c\/li\u003e\n\u003cli\u003eWeight: 0.6 lbs\u003c\/li\u003e\n\u003cli\u003eFitment: 2022+ Honda Grom (JC92), 2022+ Honda Monkey\u003c\/li\u003e\n\u003cli\u003eVendor: DHMotoring\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DHMotoring","offers":[{"title":"Default Title","offer_id":42955068637425,"sku":"DHM-HCSBP-22","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/1348\/7857\/products\/dhmotoring-engine-default-title-dhm-high-compression-stock-bore-piston-for-the-2022-honda-grom-monkey-dhm-hcsbp-22-68637425-29990356287729.webp?v=1773628664","url":"https:\/\/howlingmoto.com\/products\/dhm-high-compression-stock-bore-piston-2022-honda-grom-monkey-50mm-13-1","provider":"Howling Moto","version":"1.0","type":"link"}