{"product_id":"haiboxing-metal-spur-gear-drive-pinions-and-diff-complete-rc-spare","title":"HAIBOXING Metal Spur Gear Drive Pinions and Diff Complete - RC Spare","description":"\u003cp\u003eIn this review the focus is on the HAIBOXING Metal Spur Gear Drive Pinions and Diff Complete, a replacement set intended for HBX 18859A, 18859, 18858 and 18868 models. The bottom line: this is a practical, original spare-part kit for hobbyists who want a durable gear train replacement that fits 2021 new-version cars. The review finds the metal construction and correct tooth count deliver reliable meshing and longevity compared with cheap plastic alternatives, making it the best option for users repairing worn transmissions or restoring drivetrain performance.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOriginal spare part:\u003c\/strong\u003e Being an OEM replacement ensures fit and compatibility with HBX 18859A, 18859, 18858 and 18868 chassis without guesswork.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal construction:\u003c\/strong\u003e The metal spur gear and pinions increase durability and resist wear under load compared with stock plastic gears.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete set:\u003c\/strong\u003e The package includes the Spur Gear (28.5mm, 57T) and matching drive pinions M19012 and M19021, so users receive all primary components needed for a gear-train rebuild.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2021 new version fit:\u003c\/strong\u003e Specified for the 2021 new version of the models, reducing the risk of misfit across minor model revisions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady quantity:\u003c\/strong\u003e Supplied as a single set, which is convenient for one repair job without hunting separate parts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis kit is aimed at RC enthusiasts who own HBX 18859A, 18859, 18858 or 18868 models and need an authentic replacement for worn drivetrain parts. It suits hobbyists comfortable disassembling the transmission and replacing gears to restore smooth power delivery and reduce slop.\u003c\/p\u003e\u003cp\u003eIt is less suitable for casual users who prefer plug-and-play modules or who do not want to perform a gearbox rebuild; those buyers should seek full gearbox assemblies or professional service instead.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMetal gears provide noticeably improved wear resistance over factory plastic parts for longer service life.\u003c\/li\u003e\n\u003cli\u003eDirect compatibility with multiple HBX model numbers removes uncertainty when ordering replacements.\u003c\/li\u003e\n\u003cli\u003eThe set contains the primary spur gear and the correct pinions, simplifying repairs without extra parts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eRequires some mechanical skill to install properly, so beginners may need guidance or tools.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eItem Name\u003c\/td\u003e\n\u003ctd\u003eMetal Spur Gear Drive Pinions and Diff Complete (New Version)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpare Part Number\u003c\/td\u003e\n\u003ctd\u003eM19012 + M19021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApply To\u003c\/td\u003e\n\u003ctd\u003eHBX 18859A, 18859, 18858, 18868\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Gear Diameter\u003c\/td\u003e\n\u003ctd\u003e28.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Gear Teeth\u003c\/td\u003e\n\u003ctd\u003e57T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule\u003c\/td\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eOne set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe HAIBOXING metal spur gear and pinion set is a straightforward, value-oriented replacement for owners of the specified HBX models who want a durable, OEM-fit repair. It delivers stronger gearing and correct specifications for the 2021 new version, making it a sensible investment for anyone rebuilding a worn drivetrain and who can handle basic gearbox work.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this fit my HBX 18859?\u003c\/strong\u003e\u003cbr\u003eYes. The set is specified for HBX 18859, 18859A, 18858 and 18868 and matches the 2021 new-version gear dimensions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the set?\u003c\/strong\u003e\u003cbr\u003eThe package includes the metal spur gear (28.5mm, 57T) plus drive pinions with spare part numbers M19012 and M19021 as a complete set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation difficult?\u003c\/strong\u003e\u003cbr\u003eInstallation requires disassembling the gearbox and basic tools; hobbyists with transmission experience should manage it, while novices may prefer professional help.\u003c\/p\u003e","brand":"Shantou Haiboxing Technology\u0026Education Model Co., Ltd.","offers":[{"title":"Default Title","offer_id":46485359689947,"sku":"B0DPKQG398","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71sv_5dY9EL._AC_SL1500.jpg?v=1739299345","url":"https:\/\/gearmusthave.com\/products\/haiboxing-metal-spur-gear-drive-pinions-and-diff-complete-rc-spare","provider":"GearMustHave","version":"1.0","type":"link"}