ACT Toyota Tacoma HD/Race Sprung 4 Pad Clutch KitTA1 HDG4 kit features ACT's highly regarded Heavy Duty pressure plate and spring center 4 pad race disc delivering high torque capacity, aggressive engagement, quiet operation and increased toughness to withstand the demands of off road racing. ACTs exclusive diaphragm design increases clamp load, reduces deflection and maximizes clutch life. All diaphragms endure a four stage heat treating process for unparalleled performance. ACT precision pressure

If you choose to add them

This did absolutely nothing noticeable

this small throttle becomes a big flow restriction for the supercharger

79 inch 147 mmTravel: 8

Note: The fuel systems on the B6 A4-S4 and Early B7-S4 run at 4bar

OE replacement parts:  64-53-6-805-453 / 64 53 6 805 453 / 64536805453

Brass Drainage Valve: This radiator includes a 1/4" NPT brass drain valve with a barbed fitting to connect a hose for draining coolant easy and mess free

Magnetic Plug: This system incorporates a magnetic drain plug to capture loose particles for maximum protection

Volumetric Efficiencies and how to optimize for them:

50" 409 stainless steel and includes MIG welded hangers and OE style band clamps for a simple

and run the intercooler pumps and engine fans at full speed below 10kph to allow for full cooling during staging prior to drag racing

MFR Part # URO-013861