APR Supercharger Drive Pulley - VW/Audi / 3.0T / A6 / A7 / A8 / Q5 / Q7 / S4 / S5 / SQ5 / TouaregAPR's Supercharger Drive and Crank Pulley Upgrades dramatically increase horsepower and torque by increasing the rotational speed of the factory supercharger. APR's Stage II Pulley ECU Upgrade makes the necessary engine management adjustments to handle the increased supercharger speeds, and in turn allows the engine to create more power. The pulleys are sold separately, allowing for multiple levels of performance, each of which builds upon the other.

Feature Summary:

Part #   050-121-113-C / 050121113 C / 050 121 113 C / 050121113C

- E9X N55 3

Compatible with factory/OEM exhaust systems

FULL THROTTLE - EFR 7670

OE Part # 1C0953235BB41 / 1C0-953-235-B-B41 / 1C0953235 B B41 / 1C0 953 235 B B41

5 Audi Density Line Adjustable Rear Toe Links facilitate simple and precise toe adjustments

1 x Pulley Removal Ring (2 Parts)

direct OEM replacement fitment

These are designed to work with OEM turbos only and will not work with an aftermarket big turbo setup

The small rear door windows need to be glued/bolted inside the stock window frame

Durability