The Powerflex Upper Gearbox Mount Insert fills the voiding in the OEM gearbox mount, reducing engine and transmission movement for sharper gear changes and more precise and settled transmission response during acceleration and deceleration.

The Upper Gearbox Mount Insert (Petrol/Tuned Diesel) provides an excellent balance of strength and compliance for improved performance. The downside to this is a greater transmission of engine/gearbox vibration through the car. Inserting a mount insert will slightly increase the NVH (noise, vibration and harshness) in the transmission. Recommended for Petrol models and high-torque tuned Diesel models.