{"product_id":"vorsprung-trudrive-crank-pulley-ring-audi-3-0t-supercharged","title":"Vorsprung TruDrive Replacement Pulley Ring, Audi 3.0T Supercharged Crank Pulley (179mm, 187mm, 193mm, 207mm)","description":"\u003ch3\u003eChange Your Supercharger Ratio Without Buying a Whole New Pulley\u003c\/h3\u003e\n\u003cp\u003eAlready running a \u003ca href=\"\/products\/audi-30t-overdrive-crank-pulley\"\u003eTruDrive crank pulley\u003c\/a\u003e on your Audi 3.0T supercharged V6? Then you already own the expensive part. The stainless TruDrive hub stays bolted to the crank, and the \u003cstrong\u003eouter pulley ring is what sets your supercharger ratio\u003c\/strong\u003e. Want more boost after a tune, ported blower or fuel upgrade? Want to step back down for a daily driver? Swap the ring, not the whole pulley.\u003c\/p\u003e\n\u003cp\u003eThese are the same CNC-machined aluminum rings that come on every TruDrive pulley, sold on their own for \u003cstrong\u003eover $100 less than a complete TruDrive pulley in the same size\u003c\/strong\u003e. Pick from 179mm, 187mm, 193mm or 207mm.\u003c\/p\u003e\n\u003ch3\u003eWhy Buy the Ring\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eSwap ratios in minutes:\u003c\/strong\u003e the ring bolts to the TruDrive stainless hub, so the hub never has to come off the crank.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFour sizes:\u003c\/strong\u003e 179mm, 187mm, 193mm and 207mm, all fitting the same TruDrive hub.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eLightweight CNC aluminum:\u003c\/strong\u003e machined for weight reduction, because heavy pulleys rob power.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eSize-marked:\u003c\/strong\u003e each ring is marked with its diameter, so you always know what's on the car.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eOver $100 off the complete pulley price\u003c\/strong\u003e for the same size, because you already have the hub.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBottom line:\u003c\/strong\u003e one TruDrive hub, as many ratios as your build needs.\u003c\/p\u003e\n\u003ch3\u003eWhich Ring Size?\u003c\/h3\u003e\n\u003cp\u003eOn a crank pulley, a \u003cstrong\u003elarger ring spins the supercharger faster\u003c\/strong\u003e for more boost, and a smaller ring is milder. The 207mm ring is the most aggressive of the four, and the 179mm is the mildest. More boost means more load on fueling and knock margin, so match the ring to your tune and supporting mods, and log after any ratio change. Not sure which fits your setup? Email help@vorsprungautowerk.com and we'll help you pick.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ One CNC-machined aluminum TruDrive outer pulley ring in the size you choose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRing only.\u003c\/strong\u003e The stainless TruDrive hub and the ring-to-hub bolts come with the \u003ca href=\"\/products\/audi-30t-overdrive-crank-pulley\"\u003ecomplete TruDrive crank pulley\u003c\/a\u003e. Reuse your existing bolts when you swap rings.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Remove the supercharger belt and unbolt the current ring from the TruDrive hub. The hub stays on the crank.\u003c\/li\u003e\n\u003cli\u003e✅ Fit the new ring and apply blue Loctite to the ring-to-hub bolts.\u003c\/li\u003e\n\u003cli\u003e✅ Tighten to 22 ft-lbs in a star pattern to preload the bolts, then to 44 ft-lbs in a star pattern. Torque twice.\u003c\/li\u003e\n\u003cli\u003e✅ A different ring diameter changes belt wrap and tension. Check that your tensioner has enough travel, and have a fresh belt on hand.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdiv class=\"product-fitment-section\" style=\"margin: 20px 0; font-family: inherit;\"\u003e\n\u003ch3 style=\"font-size: 1.1rem; margin-bottom: 10px; font-weight: bold;\"\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cp\u003eThese rings fit the Vorsprung TruDrive stainless crank hub on the Audi 3.0T EA837 supercharged V6: the B8\/B8.5 S4, S5, Q5 and SQ5, the C7\/C7.5 A6 and A7, the D4 A8 and the 4L\/4M Q7. They require the TruDrive hub and do not bolt to the factory crank pulley or other brands' hubs.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left; font-size: 0.95rem;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"border-bottom: 2px solid #ddd; background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS4, S5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eB8 \/ B8.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Supercharged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eQ5, SQ5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eB8 \/ B8.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Supercharged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eA6, A7\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eC7 \/ C7.5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Supercharged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eA8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eD4\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Supercharged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eQ7\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e4L \/ 4M\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.0T V6 Supercharged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 10px; font-size: 0.85rem; color: #555;\"\u003e\u003cem\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e Requires a Vorsprung TruDrive crank hub, sold with the \u003ca href=\"\/products\/audi-30t-overdrive-crank-pulley\"\u003ecomplete TruDrive pulley\u003c\/a\u003e. Don't have one yet? Start with the complete pulley. Questions about sizing? Email help@vorsprungautowerk.com.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eTruDrive Pulley Ring FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWill this ring fit my factory crank pulley?\u003c\/strong\u003e\u003cbr\u003eNo. It bolts only to the Vorsprung TruDrive stainless hub. If you don't have one, buy the \u003ca href=\"\/products\/audi-30t-overdrive-crank-pulley\"\u003ecomplete TruDrive crank pulley\u003c\/a\u003e, which includes the hub, hardware and a ring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a bigger ring mean more boost?\u003c\/strong\u003e\u003cbr\u003eYes. On the crank, a larger diameter spins the supercharger faster. The 207mm ring is the most aggressive option and the 179mm is the mildest.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a tune for a bigger ring?\u003c\/strong\u003e\u003cbr\u003eNo tune is required just to swap rings, but more blower speed means more boost and airflow. Have your tuner confirm your fueling and knock margin can support it, and log the car after the change.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre bolts included?\u003c\/strong\u003e\u003cbr\u003eNo. The ring ships on its own. Reuse the ring-to-hub bolts from your TruDrive pulley with fresh blue Loctite.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a new belt?\u003c\/strong\u003e\u003cbr\u003eChanging the ring diameter changes belt wrap and tension. Check your tensioner's remaining travel and have a fresh \u003ca href=\"\/products\/vorsprung-torquedrive-supercharger-belt\"\u003eTorqueDrive supercharger belt\u003c\/a\u003e ready.\u003c\/p\u003e\n\u003chr\u003e\n\u003cdiv style=\"background-color: #f8fafc; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin: 30px 0;\"\u003e\n\u003ch3 style=\"font-size: 1.25rem; font-weight: bold; margin-top: 0; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.5px; color: #0f172a;\"\u003eWhy Buy From Us?\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding: 0; margin: 0;\"\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eEnthusiast Designed \u0026amp; Tested:\u003c\/strong\u003e Developed by people who actually drive and modify these cars.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eTested on Our Own Cars:\u003c\/strong\u003e If we wouldn't run it ourselves, we don't sell it.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eContinuous R\u0026amp;D:\u003c\/strong\u003e We continually develop and improve our products instead of relying on generic catalog parts.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eSupporting Audi Platform Development:\u003c\/strong\u003e Your purchase helps fund continued development of new parts for these chassis.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eReal Enthusiast Support:\u003c\/strong\u003e Get help from people who understand the platform, not ticket bots.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003eSmall Team, Big Passion:\u003c\/strong\u003e Every order directly supports continued product development and innovation.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0; display: flex; align-items: flex-start;\"\u003e\n\u003cspan style=\"margin-right: 12px; font-size: 1.1rem; line-height: 1.2;\"\u003e✅\u003c\/span\u003e\u003cdiv style=\"color: #334155; font-size: 0.95rem; line-height: 1.4;\"\u003e\n\u003cstrong style=\"color: #0f172a;\"\u003ePerformance Without the Marketing Fluff:\u003c\/strong\u003e Purpose-built parts designed to perform.\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eComplete Your Build\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/audi-30t-overdrive-crank-pulley\"\u003eTruDrive Crank Pulley (complete)\u003c\/a\u003e: stainless hub, hardware and a ring, for cars without a TruDrive yet.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/vorsprung-torquedrive-supercharger-belt\"\u003eTorqueDrive Supercharger Belt\u003c\/a\u003e: a fresh belt for your new ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/billet-aluminum-supercharger-tensioner-pulley-upgrade-audi-supercharged-ea837-3-0t\"\u003eBillet Supercharger Tensioner Pulley\u003c\/a\u003e: keeps belt tracking true at the new ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/vorsprung-unzerstorbar-high-strength-crankshaft-pulley-bolt-kit-audi-supercharged-3-0t-ea837-v6\"\u003eUnzerstörbar Crank Pulley Bolt Kit\u003c\/a\u003e: Grade 14.9 crank bolts for extra insurance.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/vorsprung-artus-sturm-supercharger-port\"\u003eArtus-Sturm Ported Supercharger Service\u003c\/a\u003e: pair more blower speed with a ported case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDrive the difference. Drive Vorsprung.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Vorsprung Autowerk","offers":[{"title":"179mm","offer_id":58680406606127,"sku":null,"price":109.99,"currency_code":"USD","in_stock":true},{"title":"187mm","offer_id":58680406638895,"sku":null,"price":139.99,"currency_code":"USD","in_stock":true},{"title":"193mm","offer_id":58680406671663,"sku":null,"price":169.99,"currency_code":"USD","in_stock":true},{"title":"207mm","offer_id":58680406704431,"sku":null,"price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/5821\/3935\/files\/vorsprung-trudrive-crank-pulley-ring-audi-3-0t-supercharged.jpg?v=1792447178","url":"https:\/\/www.vorsprungautowerk.com\/products\/vorsprung-trudrive-crank-pulley-ring-audi-3-0t-supercharged","provider":"Vorsprung Autowerk","version":"1.0","type":"link"}