Poly Transmission Mount

The Poly Transmission Mount by G FORCE CROSSMEMBERS is engineered for drivers who demand precision handling and reduced vibration during spirited driving or heavy-duty applications. This polyurethane-based transmission mount replaces the factory rubber component, addressing a critical weak point in your vehicle's drivetrain isolation system. When factory mounts deteriorate or compress from age and heat cycles, engine and transmission movement increases dramatically—translating to clunking shifts, steering wheel vibration, and accelerated wear on adjacent suspension components. The Poly Transmission Mount restores solid drivetrain control while maintaining street-drivable compliance.

Manufactured from high-durometer polyurethane, this mount significantly resists compression and heat degradation compared to OEM rubber compounds, extending service life to 80,000+ miles under normal conditions. The rigid polymer material minimizes bushing deflection during acceleration and braking events, keeping engine torque vectoring predictable and reducing lateral load transfer through the frame crossmember. G FORCE CROSSMEMBERS engineered this piece with precise molding to match OE dimensions and bolt-hole patterns, ensuring straightforward installation without modification to factory brackets. Weighing 4.95 lbs and measuring 7 x 5 x 16 inches, the mount integrates seamlessly into existing CG8 platform crossmember assemblies while providing the durability required for track days, towing, or aggressive street use.

This component is ideal for enthusiasts restoring transmission control on aging vehicles or those upgrading stock isolation for improved feedback and reduced NVH (noise, vibration, harshness). Installation typically requires basic hand tools and takes under 30 minutes per mount—no specialized equipment necessary. Mechanics frequently recommend poly transmission mounts as part of a comprehensive drivetrain refresh, pairing them with updated engine and differential mounts for balanced, consistent performance across all three isolation points. Verify fitment with your specific CG8 platform vehicle before ordering to ensure bolt-pattern compatibility.