{"product_id":"po-mar-2026-shibata-r31s130-hrp-high-speed-idler-gear-28t","title":"SHIBATA R31S130 HRP High-Speed Idler Gear 28T","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eReinforce your GRK5-R or GRK-R motor unit with this trio of competition-proven drivetrain upgrades from SHIBATA. The Hyper Idler Shaft features special plating for enhanced wear resistance during high-RPM operation, while the HRP High-Speed Idler Gears benefit from revised resin materials and manufacturing methods under Hayato Yoshiba's supervision. Together, they deliver the reliability that has secured victories at SDC and other prestigious events.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eR31S128 Hyper Idler Shaft: Special plating coating for improved wear resistance at high RPMs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eR31S129 HRP High-Speed Idler Gear (24T): Revised resin material and manufacturing method.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eR31S130 HRP High-Speed Idler Gear (28T): 48-pitch gear optimized for bearing fit.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eOptimal bearing fit accounts for thermal expansion during extended operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eCompetition-proven at SDC and other events, contributing to championship victories.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eCompatible with 1050 bearings (10mm outer diameter x 5mm inner diameter x 4mm thick).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWhy Choose This\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThese components represent the culmination of racing development, where every detail from material selection to manufacturing precision affects performance and durability. The Hyper Idler Shaft's specialized plating addresses the specific challenge of high-RPM wear, while the HRP gears' revised resin formulation delivers consistent mesh under thermal stress. For racers demanding the same reliability that has powered SDC victories, this combination provides the foundation for sustained competitive performance. The Hayato Yoshiba supervision ensures alignment with proven racing setups.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eProduct Information\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eProducts:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eSHIBATA R31S128 Hyper Idler Shaft for GRK5-R\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eSHIBATA R31S129 HRP High-Speed Idler Gear 24T\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eSHIBATA R31S130 HRP High-Speed Idler Gear 28T\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eCompatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e GRK5-R\/GRK-R motor units\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eGear Pitch:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 48P\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eBearing Compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1050 bearings (10×5×4mm)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eFeatures:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Special plating coating; revised resin materials; competition-proven design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eSupervision:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Hayato Yoshiba\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eUpgrade your GRK motor unit with these competition-hardened drivetrain components, engineered for the demands of high-RPM racing. From plated shafts to thermally optimized gears, every detail serves victory. Secure this performance trio today and build the reliability that championships demand.\u003c\/span\u003e\u003c\/p\u003e","brand":"SHIBATA","offers":[{"title":"Default Title","offer_id":52222064853268,"sku":"SHIBATA R31S130","price":1150.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/0064\/9236\/files\/SHIBATAR31S130.png?v=1773294626","url":"https:\/\/banzaihobby.com\/products\/po-mar-2026-shibata-r31s130-hrp-high-speed-idler-gear-28t","provider":"BanzaiHobby","version":"1.0","type":"link"}