{"product_id":"cdi-box-ignition-coil-for-honda-sportrax-400-trx400ex-1999-2004-30410-hc4-770","title":"CDI Box + Ignition Coil For Honda Sportrax 400 TRX400EX 1999-2004 30410-HC4-770","description":"\u003ch2\u003eCDI Box and Ignition Coil for Honda Sportrax 400 TRX400EX 1999-2004 30410-HC4-770\u003c\/h2\u003e\u003cp\u003eThis CDI box and ignition coil set replaces the spark control and coil on the Honda Sportrax 400 TRX400EX from 1999 through 2004, cross-referencing OEM part 30410-HC4-770.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis CDI box and ignition coil pairing restores spark delivery on the Honda Sportrax 400 TRX400EX. The CDI module controls ignition timing while the coil steps voltage up to fire the plug, together curing no-start and weak spark faults. Riders and mechanics working on 1999 to 2004 TRX400EX quads will find this ignition set a direct-fit replacement for OEM 30410-HC4-770.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCDI module programmed with the factory timing curve for the TRX400EX\u003c\/li\u003e\n\u003cli\u003eIgnition coil wound to deliver consistent spark voltage at high rpm\u003c\/li\u003e\n\u003cli\u003eSealed connector housing resists mud and water intrusion\u003c\/li\u003e\n\u003cli\u003eDirect plug-in to the factory harness without splicing\u003c\/li\u003e\n\u003cli\u003eCross-references OEM part number 30410-HC4-770\u003c\/li\u003e\n\u003cli\u003eCompact housing mounts to the stock location\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Honda Sportrax 400 TRX400EX 1999\u003c\/li\u003e\n\u003cli\u003efor Honda Sportrax 400 TRX400EX 2000\u003c\/li\u003e\n\u003cli\u003efor Honda Sportrax 400 TRX400EX 2001\u003c\/li\u003e\n\u003cli\u003efor Honda Sportrax 400 TRX400EX 2002\u003c\/li\u003e\n\u003cli\u003efor Honda Sportrax 400 TRX400EX 2003\u003c\/li\u003e\n\u003cli\u003efor Honda Sportrax 400 TRX400EX 2004\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDiagnosing a no-spark condition on a TRX400EX\u003c\/li\u003e\n\u003cli\u003eReplacing a failed CDI after intermittent stalling\u003c\/li\u003e\n\u003cli\u003eRefreshing ignition parts during a full tune-up\u003c\/li\u003e\n\u003cli\u003eTrail or dune riding where reliable spark is critical\u003c\/li\u003e\n\u003cli\u003eRestoring a stored quad that will not fire\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\u003e30410-HC4-770\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCDI Box, Ignition Coil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Honda Sportrax 400 TRX400EX 1999-2004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFactory-style plug-in\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 tell if the CDI or the coil is at fault? \u003cstrong\u003eA:\u003c\/strong\u003e Test the coil resistance and check for spark at the plug first, since the coil fails more often than the CDI on these quads. Replacing both at once avoids a second teardown if the other part is marginal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this work on a modified engine? \u003cstrong\u003eA:\u003c\/strong\u003e It is built around the stock timing curve, so engines with aftermarket cams or big-bore kits may need a programmable unit for best results.\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":50554038779990,"sku":"ZZ3M02936","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_d7920b6d-9e3e-40e7-bf60-7a66345fad58.jpg?v=1790876114","url":"https:\/\/www.solidspare.com\/products\/cdi-box-ignition-coil-for-honda-sportrax-400-trx400ex-1999-2004-30410-hc4-770","provider":"Solid Spare","version":"1.0","type":"link"}