{"product_id":"synchrotech-transmissions-k-series-gear-set-hub","title":"Synchrotech Transmissions K Series Gear Set Hub","description":"\u003cul\u003e\n\u003cli\u003eHubs for Each Gear Set, 1st-2nd, 3rd-4th, and 5th-6th \u003c\/li\u003e\n\u003cli\u003eFits Most K Series Transmissions \u003c\/li\u003e\n\u003cli\u003eCompatible with RSX, TSX, 8th and 9th Gen Civic Si, and Accord \u003c\/li\u003e\n\u003cli\u003eIdeal for Transmission and Synchro Rebuilds \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"#VehicleFitment\"\u003eVehicle Fitment\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eSynchrotech Synchro Hubs - K20 \u0026amp; K24 (RSX, TSX, Civic Si \u0026amp; More)\u003c\/h3\u003e\n\n\u003cp\u003eThe hub is the foundation of the whole synchro assembly, and it's the part people skip. It's splined directly to the transmission shaft and everything else rides on it, so when the hub is worn, nothing you bolt around it will fix your shifting. If you've replaced synchros and the transmission still feels wrong, this is very often why. These are Synchrotech's replacement hubs for K-series transmissions, sold individually per gear set.\u003c\/p\u003e\n\n\u003ch4\u003eWhich Part Do You Actually Need?\u003c\/h4\u003e\n\n\u003cp\u003eThree parts, three different symptoms. Match yours before you spend money.\u003c\/p\u003e\n\n\u003ctable\u003e\n    \u003cthead\u003e\n        \u003ctr\u003e\n            \u003cth scope=\"col\"\u003eSymptom\u003c\/th\u003e\n            \u003cth scope=\"col\"\u003eLikely Part\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eGrinds going into gear\u003c\/td\u003e\n\u003ctd\u003eSynchro\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003ePops out of gear under load\u003c\/td\u003e\n\u003ctd\u003eSleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eBinds, feels notchy, or blocks out mid-shift\u003c\/td\u003e\n\u003ctd\u003eHub\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eThat third one is what brings people to this page. A worn hub means the sleeve can't slide cleanly along its splines anymore, so it binds or cocks slightly instead of moving straight. What you feel is a shifter that moves normally right up to a point and then wants serious effort to finish the shift, or a gear that feels blocked even with the clutch all the way down. It's different from a grind and different from a pop-out, and it's the symptom most likely to get misdiagnosed as something else.\u003c\/p\u003e\n\n\u003ch4\u003eWhat The Hub Does\u003c\/h4\u003e\n\n\u003cp\u003eSimple job, critical role. The hub is splined to the transmission shaft, so it always spins with the shaft. The sleeve rides on the outside of the hub on those same splines, sliding back and forth to lock in whichever gear you selected, and the synchro springs and keys sit in the hub too. So the hub is what everything else is mounted to and referenced from. If those splines are worn, chewed, or wobbling, every part riding on them is compromised no matter how new it is.\u003c\/p\u003e\n\n\u003ch4\u003eWhy This Is The Part That Makes Or Breaks A Rebuild\u003c\/h4\u003e\n\n\u003cp\u003eHere's the advice worth more than anything else on this page. Plenty of people replace their synchros, close the transmission up, and find the shift is barely better than when they started. The reason is almost always worn hubs and sleeves. New carbon synchros on a worn hub are no better than new brass on a worn hub, because the problem was never the friction surface.\u003c\/p\u003e\n\n\u003cp\u003eSo when you have the transmission apart, inspect the hub splines carefully. They should engage smoothly with no binding and no play. If the sleeve wobbles on the hub or drags as you slide it by hand, replace the hub. Doing the synchros and skipping a worn hub is how a rebuild disappoints you.\u003c\/p\u003e\n\n\u003ch4\u003eSold Per Gear Set\u003c\/h4\u003e\n\n\u003cp\u003eEach hub serves a pair of gears, so a transmission uses three: one for 1st and 2nd, one for 3rd and 4th, and one for 5th and 6th. They're sold individually because wear is rarely even. The 1\/2 hub usually takes the worst of it, since first and second see the most aggressive engagement and the most launches. If that's the only one past spec, replace it and leave the others alone.\u003c\/p\u003e\n\n\u003ch4\u003eFits These K-Series Transmissions\u003c\/h4\u003e\n\n\u003ctable\u003e\n    \u003cthead\u003e\n        \u003ctr\u003e\n            \u003cth scope=\"col\"\u003eMake\u003c\/th\u003e\n            \u003cth scope=\"col\"\u003eModel\u003c\/th\u003e\n            \u003cth scope=\"col\"\u003eYears\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eAcura\u003c\/td\u003e\n\u003ctd\u003eRSX Type-S \/ Type R\u003c\/td\u003e\n\u003ctd\u003e2002-2006\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eAcura\u003c\/td\u003e\n\u003ctd\u003eTSX\u003c\/td\u003e\n\u003ctd\u003e2004-2008\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eAcura\u003c\/td\u003e\n\u003ctd\u003eILX\u003c\/td\u003e\n\u003ctd\u003e2013-2015\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCivic Si \/ Type R\u003c\/td\u003e\n\u003ctd\u003e2002-2005\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCivic Si \/ Type R\u003c\/td\u003e\n\u003ctd\u003e2006-2011\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCivic Si\u003c\/td\u003e\n\u003ctd\u003e2012-2015\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eAccord\u003c\/td\u003e\n\u003ctd\u003e2003-2007\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eSelect the hub matching the gear pair you're replacing.\u003c\/p\u003e\n\n\u003ch4\u003eDo It Once\u003c\/h4\u003e\n\n\u003cp\u003eGetting into a K-series transmission is the expensive part of this job, whether you're paying a shop or spending your own weekend. The parts are the cheap half. So while you're in there, inspect everything, the hubs, the sleeves, the synchros, and the engagement teeth on the gears, and replace what's past spec rather than what you assumed was bad. That's how you close it up once and get the shift you were after.\u003c\/p\u003e\n\n\u003ch4\u003eWho Should Grab A Hub\u003c\/h4\u003e\n\n\u003cp\u003eThis is for anyone whose shifter binds or blocks out going into a particular gear, and for the builder going through a transmission who's found a hub with worn or sloppy splines. It's also for the person who already did synchros and didn't get the result they wanted. Fix the foundation and everything riding on it works the way it should.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e K20 and K24 transmissions in the 2002-2006 Acura RSX Type-S and Type R, 2004-2008 Acura TSX, 2013-2015 Acura ILX, 2002-2005 Honda Civic Si and Type R, 2006-2011 Honda Civic Si and Type R, 2012-2015 Honda Civic Si, and 2003-2007 Honda Accord. \u003cstrong\u003eSold:\u003c\/strong\u003e individually, per gear set. \u003cstrong\u003eCoverage:\u003c\/strong\u003e 1st\/2nd, 3rd\/4th, and 5th\/6th, three hubs total per transmission.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cp\u003e2013-2015 Acura ILX\u003cbr\u003e2002-2006 Acura RSX Type S\/Type R\u003cbr\u003e2004-2008 Acura TSX\u003cbr\u003e2003-2007 Honda Accord\u003cbr\u003e2002-2005 Honda Civic Si\/Type R\u003cbr\u003e2006-2011 Honda Civic Si\/Type R\u003cbr\u003e2012-2015 Honda Civic Si\u003c\/p\u003e \n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\u003c\/ul\u003e\n","brand":"Synchrotech Transmissions","offers":[{"title":"1st\/2nd","offer_id":46326780854306,"sku":"SYN-SH-K20-1","price":86.63,"currency_code":"USD","in_stock":false},{"title":"3rd\/4th","offer_id":46326780887074,"sku":"SYN-SH-K20-3","price":57.75,"currency_code":"USD","in_stock":false},{"title":"5th\/6th","offer_id":46326780919842,"sku":"SYN-SH-K20-5","price":57.75,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/synchrotech-transmissions-k-se_yrs1.jpg?v=1786137008","url":"https:\/\/www.hybrid-racing.com\/products\/synchrotech-transmissions-k-series-gear-set-hub","provider":"Hybrid Racing","version":"1.0","type":"link"}