Spool B58/S58 Billet Race Torque Converter (No Core Required)

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 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.

Fits: BMW B58 and S58 (and Toyota GR Supra 3.0) with the ZF 8HP50, 8HP51 or 8HP76 automatic

Brand: Spool Performance

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.