{"product_id":"420-78-drive-chain-for-suzuki-jr50-1978-2006-jr-50","title":"420-78 Drive Chain for Suzuki JR50 1978-2006 JR 50","description":"\u003ch2\u003e420-78 Drive Chain for Suzuki\u003c\/h2\u003e\u003cp\u003eThe 420-78 drive chain is a 78-link replacement chain that transfers power from the countershaft sprocket to the rear wheel sprocket on small-displacement mini bikes and youth machines.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis 420-78 drive chain is a direct-fit replacement for worn or stretched chains on small mini bikes, and it keeps power delivery smooth from the engine to the rear wheel. Riders and mechanics choose this 420-78 drive chain when a stock chain has developed tight spots, seized links, or excessive slack. It suits routine maintenance and full drivetrain refreshes alike.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e420 pitch sizing matches standard mini bike sprockets\u003c\/li\u003e\n\u003cli\u003e78 links provide the correct length for the listed applications\u003c\/li\u003e\n\u003cli\u003eRoller construction supports consistent power transfer\u003c\/li\u003e\n\u003cli\u003ePre-stretched design helps limit early elongation\u003c\/li\u003e\n\u003cli\u003eIncludes master link for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Suzuki JR50\u003c\/li\u003e\n\u003cli\u003efor Suzuki JR 50\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRoutine drivetrain maintenance on youth mini bikes\u003c\/li\u003e\n\u003cli\u003eReplacing a stretched or broken chain after trail riding\u003c\/li\u003e\n\u003cli\u003eRestoring smooth acceleration on older machines\u003c\/li\u003e\n\u003cli\u003eSeasonal tune-ups before riding weather begins\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e420-78\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChain Pitch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e420\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLink Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e78\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoller chain with master link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How do I know if my chain needs replacing? \u003cstrong\u003eA:\u003c\/strong\u003e Check for tight spots, kinked links, or the ability to pull the chain away from the rear sprocket. Excess slack that cannot be adjusted out usually means it is time for a new chain.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Should the sprockets be replaced at the same time? \u003cstrong\u003eA:\u003c\/strong\u003e Worn sprocket teeth will accelerate wear on a new chain, so inspect both sprockets closely. Replacing them together helps the drivetrain last longer.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":51144147828822,"sku":"OO1C24968","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_f674219c-39c3-4e37-a826-f80801b9fde9.jpg?v=1794567412","url":"https:\/\/www.solidspare.com\/products\/420-78-drive-chain-for-suzuki-jr50-1978-2006-jr-50","provider":"Solid Spare","version":"1.0","type":"link"}