The performance potential of your engine is limited by its ability to breathe.

Part#: 048-109-601A

The performance potential of your engine is limited by its ability to breathe.

Part#: 053-109-611

The oil you find in your car's air box is caused by high engine pressures and spray off of the camshaft.

Part#: 10-109-055

The performance potential of your engine is limited by its ability to breathe.

Part#: 10-109-2681301

The performance potential of your engine is limited by its ability to breathe.

Part#: 10-109-2681302

These stiffer valve springs alone will extend the revving capabilities of your valvetrain to the 8,000 rpm mark.

Part#: 10-109-600K

These stiffer valve springs alone will extend the revving capabilities of your valvetrain to the 8,000 rpm mark.

Part#: 10-109-601K

These stiffer valve springs alone will extend the revving capabilities of your valvetrain to the 8,000 rpm mark.

Part#: 10-109-602K

These stiffer valve springs alone will extend the revving capabilities of your valvetrain to the 8,000 rpm mark.

Part#: 10-109-603K

These stiffer valve springs alone will extend the revving capabilities of your valvetrain to the 8,000 rpm mark.

Part#: 10-109-604K

1996 - 2005 Mk3 and Mk4 2.

Part#: 10-109-605K

1996 - 2005 Mk3 and Mk4 2.

Part#: 10-109-606K

Autotech SportTuned Single Outer Valve Spring.

Part#: 10-109-623

Autotech SportTuned Single Inner Valve Spring.

Part#: 10-109-633

Autotech SportTuned Single Titanium Retainer 8V/10V.

Part#: 10-109-652

Autotech manufactures SportTuned lightweight titanium retainers for the ultimate street or race valvetrain.

Part#: 10-109-652K

Autotech manufactures SportTuned lightweight titanium retainers for the ultimate street or race valvetrain.

Part#: 10-109-653K

Autotech SportTuned Single Titanium Retainer 16V/20V.

Part#: 10-109-654

Autotech manufactures SportTuned lightweight titanium retainers for the ultimate street or race valvetrain.

Part#: 10-109-654K

Autotech SportTuned Single Titanium Retainer X-Flow/12V VR6.

Part#: 10-109-656

Autotech manufactures SportTuned lightweight titanium retainers for the ultimate street or race valvetrain.

Part#: 10-109-656K

Autotech manufactures SportTuned lightweight titanium retainers for the ultimate street or race valvetrain.

Part#: 10-109-657K

Autotech manufactures SportTuned lightweight titanium retainers for the ultimate street or race valvetrain.

Part#: 10-109-659K

The performance potential of your engine is limited by its ability to breathe.

Part#: 10-109-7337

The performance potential of your engine is limited by its ability to breathe.

Part#: 10-109-734K

The performance potential of your engine is limited by its ability to breathe.

Part#: 10-109-7407

The performance potential of your engine is limited by its ability to breathe.

Part#: 10-109-742K

Replacement OEM Timing belt.

Part#: 037.109.119C