Powerflex Black – Upper Engine Mount Insert – Toyota GR Yaris

The Powerflex Black Series upper engine mount bush insert (PFF76-925BLK) is designed to significantly stiffen the original OEM right-hand/upper engine mount on the Toyota GR Yaris, delivering enhanced performance on track, in rallying and during track days.

Manufactured from the special high-stiffness Black Series polyurethane compound (95 Shore A), this insert fills the voids in the factory rubber mount (OEM part number: 12305-18050). By reducing engine movement and twisting under hard acceleration and during rapid gear changes, it provides more direct, responsive throttle feel, counteracts drive-wheel hop (wheel hop) when launching and allows power to be transferred to the road instantly.

Installation is simple and cost-effective, as the insert fits directly inside the original mount without requiring replacement of the complete component. For ideal balance and maximum drivetrain control, Powerflex recommends installing it together with the other two inserts in the GR Yaris range (PFF76-920BLK and PFF76-923BLK).

Features

• Type: Upper engine mount bush insert
• Product type: Polyurethane bushes and mounts
• Series: Powerflex Black Series (for track, rally and motorsport use)
• Material: High-performance 95 Shore A polyurethane (black)
• Reference OEM part number: 12305-18050
• Manufacturer part number: PFF76-925BLK
• Quantity per vehicle: 1
• Engine stability: Reduces powertrain movement and twisting under load and braking
• Driving response: More direct throttle feel and a substantial reduction in wheel hop
• Recommended combination: Most effective when installed with Powerflex inserts PFF76-920BLK and PFF76-923BLK
• Direct-fit installation: Simple plug & play fitment inside the factory mount

Note

As this is an extremely stiff Black Series (95A) component intended for racing and competition use, installation may increase vibration and noise (NVH) inside the cabin at idle.