{"title":"Sigma 4.6L Parts","description":"\u003cp\u003eParts that fit the Sigma 4.6L - every one checked against our fitment data.\u003c\/p\u003e","products":[{"product_id":"jxb-performance-cadillac-sts-awd-driveshaft-center-support-bearing-carrier-upgrade","title":"JXB Performance Cadillac STS AWD Driveshaft Center Support Bearing Carrier Upgrade","description":"\u003cdiv class=\"tgk\"\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M7 2h2v2h6V2h2v2h1a2 2 0 012 2v1h-2v1h2v4h-2v1h2v1a2 2 0 01-2 2h-1v2h-6v2H9v-2H7v2H5v-2H4a2 2 0 01-2-2v-1h2v-1H2V9h2V8H2V7a2 2 0 012-2h1V3h2V2zm1 4a1 1 0 00-1 1v8a1 1 0 001 1h8a1 1 0 001-1V7a1 1 0 00-1-1H8zm2 2h4v6h-4V8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eOverview\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-p\"\u003eThe stock center support bearing carrier holds the driveshaft in place with rubber so thin about 20 lbs of force moves it from center to the end of its travel. While that's great for making sure no NVH makes it to the cabin, the stock bushing is extremely prone to failure, especially in harsher climates and on higher-powered cars. When the bushing lets go, it leads to excessive vibrations and clunking which can damage the transmission and rear diff. To make matters worse, the stock carrier is molded onto the non-serviceable center support bearing, leading to costly driveshaft replacement.\u003c\/div\u003e\n\u003cdiv class=\"tgk-p\"\u003eThis upgraded unit keeps the driveshaft firmly in place at all times, and its polyurethane construction ensures it will never wear out. The thick bushings ensure the driveshaft cannot move from center, maintaining driveshaft alignment at all times.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M3 3h18v2H3V3zm0 4h12v2H3V7zm0 4h18v2H3v-2zm0 4h12v2H3v-2zm0 4h18v2H3v-2z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eSpecifications\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable class=\"tgk-specs\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCadillac STS AWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolyurethane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBushing Options\u003c\/td\u003e\n\u003ctd\u003eStreet, Track\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBushing Interchangeability\u003c\/td\u003e\n\u003ctd\u003eStreet and Track bushings are interchangeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M3 3h18v2H3V3zm0 4h12v2H3V7zm0 4h18v2H3v-2zm0 4h12v2H3v-2zm0 4h18v2H3v-2z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eBushing Option Comparison\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable class=\"tgk-cmp\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth class=\"th-teal\"\u003eStreet\u003c\/th\u003e\n\u003cth class=\"th-org\"\u003eTrack\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd class=\"ct\"\u003eStreet driving\u003c\/td\u003e\n\u003ctd class=\"co\"\u003eTrack \/ performance driving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNVH Absorption\u003c\/td\u003e\n\u003ctd class=\"ct\"\u003eAbsorbs most drivetrain NVH\u003c\/td\u003e\n\u003ctd class=\"co\"\u003eNo-compromise, minimal isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCabin Noise\u003c\/td\u003e\n\u003ctd class=\"ct\"\u003eLight hum possible at some speeds\u003c\/td\u003e\n\u003ctd class=\"co\"\u003eSubstantial cabin noise possible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolator Bushings\u003c\/td\u003e\n\u003ctd class=\"ct\"\u003eYes — separates carrier from body and hardware\u003c\/td\u003e\n\u003ctd class=\"co\"\u003eYes — separates carrier from body and hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterchangeable\u003c\/td\u003e\n\u003ctd class=\"ct\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"co\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M13 2L3 14h9l-1 8 10-12h-9l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feats\"\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003ePolyurethane Construction\u003c\/b\u003eBuilt from polyurethane throughout, this carrier will never wear out the way the factory rubber bushing does, even in harsh climates or on high-powered builds.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eEliminates Driveshaft Movement\u003c\/b\u003eThick bushings prevent the driveshaft from moving off-center under load, maintaining precise driveshaft alignment at all times.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eProtects Transmission \u0026amp; Rear Differential\u003c\/b\u003eBy eliminating the excessive vibrations and clunking caused by a failed stock carrier, this upgrade protects downstream drivetrain components from premature wear and damage.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eCustom Isolator Bushings\u003c\/b\u003eAfter extensive design iterations, custom isolator bushings were developed to separate the carrier from the vehicle body and mounting hardware, substantially reducing NVH compared to a solid upgrade.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eTwo Bushing Options Available\u003c\/b\u003eStreet and Track bushing variants are offered to suit your driving priorities — and since they are fully interchangeable, you can run both and swap as needed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eServiceable Design\u003c\/b\u003eUnlike the factory unit where the carrier is molded directly onto a non-serviceable bearing, this upgraded design avoids the costly full driveshaft replacement scenario associated with stock carrier failure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M22.7 19l-9.1-9.1c.9-2.3.4-5-1.5-6.9-2-2-5-2.4-7.4-1.3L9 6 6 9 1.6 4.7C.4 7.1.9 10.1 2.9 12.1c1.9 1.9 4.6 2.4 6.9 1.5l9.1 9.1c.4.4 1 .4 1.4 0l2.3-2.3c.5-.4.5-1.1.1-1.4z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWhy does the stock center support bearing carrier fail?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eThe stock carrier uses very thin rubber that allows approximately 20 lbs of force to move the driveshaft from center to the end of its travel. This rubber is extremely prone to deterioration, particularly in harsh climates and on higher-powered vehicles, eventually leading to vibrations, clunking, and potential drivetrain damage.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWhat happens if I leave the stock carrier and it fails?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eA failed stock carrier causes excessive vibrations and clunking that can damage both the transmission and rear differential. Additionally, because the stock carrier is molded directly onto a non-serviceable bearing, failure typically requires a costly full driveshaft replacement rather than a simple bearing swap.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWhich bushing option should I choose — Street or Track?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eThe Street bushings absorb most of the drivetrain NVH and are recommended for daily-driven vehicles. Some light NVH in the form of a soft hum may be present at certain speeds, though it is unlikely to be noticeable with a modified exhaust or open windows. The Track bushings are designed for no-compromise drivetrain performance and may produce a substantial amount of cabin noise. If you are unsure, both options are interchangeable so you can try each and decide.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eAre the Street and Track bushings truly interchangeable?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eYes. Both bushing options are fully interchangeable within the same carrier, so you can purchase both and swap between them depending on whether you are heading to the track or driving on the street.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eDoes this upgrade eliminate all NVH?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eCustom isolator bushings were developed through extensive design iterations specifically to separate the carrier from the vehicle body and mounting hardware, substantially reducing NVH. The Street bushing option absorbs most drivetrain NVH, with only light noise possible at some speeds. The Track bushing option prioritizes performance over noise isolation and may produce noticeable cabin noise.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"JXB Performance","offers":[{"title":"Street (Soft \/ Quieter)","offer_id":46415036448917,"sku":"JXB-GM007A2-S","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Track (Hard \/ Louder)","offer_id":46415036481685,"sku":"JXB-GM007A2-T","price":299.99,"currency_code":"USD","in_stock":true},{"title":"Give me both!","offer_id":46415036514453,"sku":"JXB-GM007A2-B","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0579\/6259\/4453\/files\/GM007A2-Assembled.jpg?v=1758119825"}],"url":"https:\/\/tgkmotorsport.com\/collections\/sigma-4-6l-parts.oembed","provider":"TGK Motorsport","version":"1.0","type":"link"}