Eliminates the problematic two-piece design and rubber isolator found in the stock crank pulley while reducing the mass of the motor's rotating assembly.
*To be used with 'Stage 2' software or software specific to a supercharger crank pulley upgrade*
Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt.
10X Entries Into Our F80 M3 Sweepstakes
Increase supercharger rotational speed to provide more boost to your engine
2X Entries Into Our F80 M3 Sweepstakes *To be used with Stage 2 software - Stage 2+ software necessary if used in conjunction with a supercharger pulley upgrade*
Eliminates the problematic two-piece design and rubber isolator found in the stock crank pulley while reducing the mass of the motor's rotating assembly.
*To be used with 'Stage 2' software or software specific to a supercharger crank pulley upgrade*
Dramatically increase horsepower and torque by increasing the rotational speed of the factory supercharger (Bolt-On SC Pulley)
Call In Or Chat For Best Price! *For models with factory bolt-on pulley (3.0T Gen 2 Simos 16.x) - APR Stage II software is required to ru
Brand:
ES#:
4057277
Mfg#:
MS100185
In Stock
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$701.99
This product was last offered at the strikethrough price on 11-02-2026
Increase supercharger rotational speed to provide more boost to your engine
2X Entries Into Our F80 M3 Sweepstakes *To be used with Stage 2 software - Stage 2+ software necessary if used in conjunction with a supercharger pulley upgrade*
Turn your Audi B8 S4 or S5 into an all-out street monster with IE's complete Dual Pulley kit! Includes ECU & TCU software plus Dual Pulley setup
Fits vehicles with DSG transmissions only
Spin the supercharger faster without affecting the accessory drive system
10X Entries Into Our F80 M3 Sweepstakes Appropriate stage 2 software is required for use
Brand:
ES#:
4821293
Mfg#:
025510ECS01KT3
In Stock
$408.98
This product was last offered at the strikethrough price on 10-15-2026
Spin the supercharger faster without affecting the accessory drive system
10X Entries Into Our F80 M3 Sweepstakes Appropriate stage 2 software is required for use
Underdrive pulleys help reduce the amount of power your engine has to devote to accessories like your alternator or a/c compressor. Unlock extra power with performance underdrive pulleys and lightweight pulley options to reduce rotating mass.
Lifetime Replacement
