Spool Performance B58/S58 Billet Race Torque Converter Upgrade

Introducing the Spool Performance X58 Billet Race Torque Converter, engineered for all B58 / S58-powered vehicles equipped with the ZF 8HP50, 8HP51, or 8HP76 transmissions.

Built to handle serious power, our X58 converter features:

Billet drive plate
Billet stator
3800–4000 RPM high-stall option

PRODUCT IS ON BACKORDER. NEW INVENTORY EXPECTED BY END OF JUNE. FEEL FREE TO PLACE ORDER NOW TO SECURE A UNIT FROM UPCOMING BATCH. EMAIL CUSTOMER_SERVICE@SPOOLPERFORMANCE.US IF YOU HAVE ANY QUESTIONS.

This upgrade is the ideal solution for enthusiasts pushing larger turbo setups and demanding maximum performance without sacrificing drivability.

High Stall Without the Headaches

One of the biggest complaints about other high-stall converters is poor street manners. We specifically designed the X58 to retain near-stock drivability, allowing smooth operation in stop-and-go traffic while still delivering the high stall speed needed to fully utilize your turbocharger’s powerband.

You get the best of both worlds:

Aggressive launch capability
Comfortable daily driving behavior

No Core Required

Unlike many competitors, we do not require your stock core. Our converter is fully compatible across all X58 models running the 8HP50, 8HP51, or 8HP76—making installation straightforward and hassle-free.

In Stock & Ready to Ship

We keep these units in stock and ready to go. Simply place your order, and we’ll prepare it for shipment right away.

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Spool B58/S58 Billet Race Torque Converter Upgrade - No Core Required!