{"product_id":"shop-shibata-grk-idler-spacers-for-grk-r-and-grk5-r-choose-r31s123-1mm-standard-spacers-or-r31s139-1-9mm-pom-low-friction-spacers","title":"SHIBATA GRK-R \/ GRK5-R Idler Spacer Set – 1mm Aluminum \/ 1.9mm POM","description":"\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSHIBATA GRK Idler Spacer Sets\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e are genuine replacement and tuning components for the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGRK-R and GRK5-R drivetrain gear assemblies\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eChoose between the original \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1mm replacement spacer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e or the newer \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1.9mm POM low-friction spacer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, depending on your chassis setup and drivetrain configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eR31S123 – 1mm Standard Idler Spacer\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis is the standard \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1mm-thick idler spacer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e used in the GRK-R and GRK5-R gear components. It is ideal as a direct replacement or spare part and can also be used as a replacement component for the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eR31S024 integrated axle shaft\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Two spacers are included.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eR31S139 – 1.9mm POM Low-Friction Idler Spacer\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis upgraded spacer is manufactured from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ePOM resin\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and was adopted for the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGRK5-R HRP Full Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The POM material is intended to reduce friction caused by rotational contact within the drivetrain. It is compatible with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGRK5-R kits and GRKRCV-converted vehicles\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Installation Note\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1.9mm R31S139 POM spacers are not a direct one-for-one replacement for only the 1mm spacer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSHIBATA specifies that when converting to R31S139, the existing \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3mm and 1mm aluminum idler spacers are both replaced with 1.9mm POM spacers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Because this changes the front-to-rear position of the idler gear, the idler shaft orientation or gear position may need adjustment depending on whether the chassis uses a front- or rear-motor configuration.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGenuine SHIBATA \/ GRK drivetrain components\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for GRK-R and GRK5-R gear assemblies\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTwo spacer options in one listing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eR31S123:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1mm standard replacement spacer\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eR31S139:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1.9mm POM low-friction upgrade\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eR31S139 helps reduce rotational friction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eR31S123 also fits the R31S024 integrated axle shaft\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTwo spacers included per package\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIdeal for replacement, repair, or drivetrain tuning\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eR31S123\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGRK-R\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGRK5-R\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eR31S024 Integrated Axle Shaft applications \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eR31S139\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGRK5-R\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGRKRCV converted vehicles\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGRK5-R HRP drivetrain configuration\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SHIBATA","offers":[{"title":"1.0mm Aluminum","offer_id":67754296246560,"sku":"R31S123","price":3.99,"currency_code":"USD","in_stock":true},{"title":"1.9mm POM","offer_id":67754296279328,"sku":"R31S139","price":3.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0813\/6340\/3040\/files\/RS31S123.webp?v=1791928889","url":"https:\/\/thercshop.com\/products\/shop-shibata-grk-idler-spacers-for-grk-r-and-grk5-r-choose-r31s123-1mm-standard-spacers-or-r31s139-1-9mm-pom-low-friction-spacers","provider":"THE RC SHOP ","version":"1.0","type":"link"}