{"product_id":"23451-mkr-d10-1793819804010","title":"Genuine Honda OEM MAINSHAFT GEAR, 3RD \u0026 4TH (20T\/23T) - 23451-MKR-D10","description":"\u003cdiv class=\"trd trd--honda\"\u003e\n\u003csection class=\"trd-hero\"\u003e\u003cp class=\"trd-eyebrow\"\u003eHonda · Genuine OEM Part\u003c\/p\u003e\n\u003ch2 class=\"trd-headline\"\u003eHonda Third and Fourth Mainshaft Gear\u003c\/h2\u003e\n\u003cp class=\"trd-lead\"\u003eHonda part 23451-MKR-D10 is a genuine transmission gear identified by Honda as GEAR, MAINSHAFT THIRD \u0026amp; FOURTH (20T\/23T). It is a combined third- and fourth-gear component installed on the transmission mainshaft.\u003c\/p\u003e\n\u003cp class=\"trd-lead\"\u003eThe gear carries two specified tooth counts, 20 teeth and 23 teeth, corresponding to the third- and fourth-gear positions identified in Honda's catalog description. Its catalog quantity is one piece. The exact Honda part number should be used when ordering so the named gear and tooth arrangement are matched correctly.\u003c\/p\u003e\n\u003cul class=\"trd-chips\"\u003e\n\u003cli class=\"trd-chip\"\u003e\n\u003cspan class=\"trd-chip-label\"\u003ePart Number\u003c\/span\u003e\u003cspan class=\"trd-chip-value\"\u003e23451-MKR-D10\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"trd-chip\"\u003e\n\u003cspan class=\"trd-chip-label\"\u003ePart Type\u003c\/span\u003e\u003cspan class=\"trd-chip-value\"\u003eGear\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"trd-chip\"\u003e\n\u003cspan class=\"trd-chip-label\"\u003eAssembly\u003c\/span\u003e\u003cspan class=\"trd-chip-value\"\u003eTransmission\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cdiv class=\"trd-cards trd-cards--3\"\u003e\n\u003carticle class=\"trd-card\"\u003e\u003cdiv class=\"trd-card-body\"\u003e\n\u003ch3 class=\"trd-card-title\"\u003eTransmission Mainshaft Gear\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThis component belongs to the transmission assembly and mounts on the mainshaft. Honda identifies it specifically as the gear serving the third- and fourth-gear positions rather than as a single-ratio gear.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"trd-card\"\u003e\u003cdiv class=\"trd-card-body\"\u003e\n\u003ch3 class=\"trd-card-title\"\u003e20T And 23T Layout\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThose tooth counts are part of the official Honda description and distinguish this component from other transmission gears.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"trd-card\"\u003e\u003cdiv class=\"trd-card-body\"\u003e\n\u003ch3 class=\"trd-card-title\"\u003eExact Number Matters\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThe Honda catalog identifies this component by part number 23451-MKR-D10 and by its third-and-fourth mainshaft designation. Matching both details helps prevent confusion with nearby gears in the transmission assembly.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\n\u003csection class=\"trd-story trd-story--text\"\u003e\u003cdiv class=\"trd-story-copy\"\u003e\n\u003ch3 class=\"trd-story-title\"\u003eIdentified In Transmission Catalog\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eHonda's transmission parts catalog places 23451-MKR-D10 among the mainshaft and countershaft gears. The catalog names it as the third-and-fourth mainshaft gear and specifies 20T\/23T, while surrounding entries identify other gears by different shaft locations and tooth counts. This establishes the part's role and distinguishes it from adjacent transmission components.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"trd-section trd-section--specs\"\u003e\u003ch2 class=\"trd-section-title\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"trd-table-wrap\"\u003e\u003ctable class=\"trd-table trd-table--specs\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHonda Part Number\u003c\/th\u003e\n\u003ctd\u003e23451-MKR-D10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHonda Catalog Description\u003c\/th\u003e\n\u003ctd\u003eGEAR, MAINSHAFT THIRD \u0026amp; FOURTH(20T\/23T)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOEM Catalog Description\u003c\/th\u003e\n\u003ctd\u003eGEAR, MAINSHAFT THIRD \u0026amp; FOURTH (20T\/23T)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Type\u003c\/th\u003e\n\u003ctd\u003eGear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAssembly\u003c\/th\u003e\n\u003ctd\u003eTransmission\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTooth counts\u003c\/th\u003e\n\u003ctd\u003e20 teeth \/ 23 teeth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCatalog quantity\u003c\/th\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"trd-section trd-section--known-applications\"\u003e\u003ch2 class=\"trd-section-title\"\u003eKnown Applications\u003c\/h2\u003e\n\u003cdiv class=\"trd-table-wrap\"\u003e\u003ctable class=\"trd-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eModel\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eType\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eModel Years\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eCBR1000SP\u003c\/td\u003e\n\u003ctd\u003eMotorcycle\u003c\/td\u003e\n\u003ctd\u003e2021–2023\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"trd-notice\"\u003eModel applications as listed in Honda's dealer parts catalog for part number 23451-MKR-D10.\u003c\/p\u003e\u003c\/section\u003e\u003cp class=\"trd-notice\"\u003eVerify the Honda OEM part number for your specific model before ordering.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"HONDA","offers":[{"title":"Default Title","offer_id":68255874187415,"sku":"23451-MKR-D10","price":126.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/23451-MKR-D10-hotspot-pos8-us.webp?v=1793819806","url":"https:\/\/allamericanktm.com\/products\/23451-mkr-d10-1793819804010","provider":"All American KTM","version":"1.0","type":"link"}