Spool Performance ZF 8HP70 / 8HP75 / 8HP76 Billet 300M C-Hub Cog Drive SP-8HP7X-UCD

Spool Performance ZF 8HP45 / 8HP50 / 8HP51 Billet 300M C-Hub Cog Drive

The factory C-hub cog drive in ZF 8HP45, 8HP50, and 8HP51 transmissions is cast steel, which works at stock power but is prone to failure under increased torque, line pressure, or aggressive shifting. Typical issues include cog tooth deformation, spline wear, and cracking under shock loads.

Spool Performance replaces the factory casting with a fully CNC-machined billet 300M C-Hub Cog Drive, engineered for high-torque, high-RPM, and high-performance applications.

Key Features

• Billet 300M Construction: Aerospace-grade, vacuum-melted alloy steel for superior strength and fatigue resistance
• Precision CNC Machining: Ensures accurate cog geometry and even load distribution
• Improved Durability: Eliminates common cast-steel failure modes like porosity, uneven grain, and localized stress points
• Optimized Torque Transfer: Reduces stress concentration and improves shift consistency

Why Upgrade?

• Supports elevated power levels, upgraded clutches, and higher line pressures
• Essential for performance builds using ZF 8HP45, 8HP50, or 8HP51 transmissions
• Critical reliability upgrade for motorsport and high-performance street applications

The Spool Performance Billet 300M C-Hub Cog Drive ensures your ZF 8HP transmission handles extreme torque safely, giving confidence under the most demanding driving conditions.

Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.

The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.