{"product_id":"synchrotech-3-4-gear-hub-sleeve-sh-k20-for-honda-k20-6-speed-transmission","title":"Synchrotech 3-4 Gear Hub Sleeve SH-K20 for Honda K20 6-Speed Transmission","description":"Upgrade the shifting performance of your Honda K-series transmission with the Synchrotech SH-K20 3rd–4th Gear Hub and Sleeve. This precision-machined component is designed for K20 6-speed gearboxes, restoring smooth engagement and eliminating worn synchro issues during 3-4 shifts.\n\n🔧 Key Features:\n✔ Brand: Synchrotech\n✔ Part Number: SH-K20\n✔ Application: 3rd–4th Gear Hub and Sleeve Assembly\n✔ Fitment:\n • Honda \/ Acura K20 6-speed transmissions\n • Common in Civic Si, RSX Type-S, and other K20A\/K20Z platforms\n✔ Material: High-strength chromoly steel\n✔ Design: OEM-style fitment with upgraded metallurgy for longevity\n✔ Usage: Suitable for street, track, or performance builds\n\n✅ Why Upgrade?\n⚙️ Replaces worn or damaged factory hub \u0026amp; sleeve\n\n🔧 Ensures clean, positive shifts between 3rd and 4th gear\n\n💪 Built to handle high RPM and aggressive driving\n\n🛠️ Direct-fit installation – no modification needed\n\n🏁 Trusted by tuners, racers, and rebuild shops worldwide\n\n📦 What’s Included:\n(1) Synchrotech SH-K20 3rd–4th Gear Hub and Sleeve Assembly\n\nPackaged for safe shipping\n\nNew and unused — 100% genuine Synchrotech","brand":"Synchrotech","offers":[{"title":"Default Title","offer_id":28155154305,"sku":"SH-K20-3","price":57.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0223\/2067\/products\/7843260203117.jpg?v=1766113888","url":"https:\/\/www.hptautosport.com\/products\/synchrotech-3-4-gear-hub-sleeve-sh-k20-for-honda-k20-6-speed-transmission","provider":"HPTautosport","version":"1.0","type":"link"}