Turn your Audi B8 S4 or S5 into an all-out street monster with IE's complete Dual Pulley kit! Includes ECU software plus "Dual Pulley" setup
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
The one pulley solution for dual pulley power!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Features precision machined half-shells designed to perfectly clamp the supercharger pulley for easy removal
2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Includes a new alternator, power steering and crank pulley that allows you to use a stock belt.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply Vehicles with clutched alternator pulley require hardware kit - ES271279 for installation
Brand:
ES#:
420
Mfg#:
MK44CPK
Ships on Mar 8, 2027
ON SALE!
SAVE 20%
$304.99
This product was last offered at the strikethrough price on 06-13-2026
Includes a new alternator, power steering and crank pulley that allows you to use a stock belt.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply Vehicles with clutched alternator pulley require hardware kit - ES271279 for installation
Brand:
ES#:
3985
Mfg#:
MK44CPK-RED
In Stock
ON SALE!
$312.99
This product was last offered at the strikethrough price on 06-13-2026
Bolt on way to reclaim lost horsepower
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For vehicles with FSI engines only
Brand:
ES#:
6139
Mfg#:
06F198001SLV
In Stock
ON SALE!
SAVE 15%
$194.99
This product was last offered at the strikethrough price on 05-02-2026
Bolt on way to reclaim lost horsepower
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
6140
Mfg#:
06F198002SLV
Ships in 2 Business Days
ON SALE!
SAVE 10%
$194.99
This product was last offered at the strikethrough price on 05-02-2026
Provides broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Software & installation kit not included in this upgrade kit
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply *For models with press-on style supercharger pulleys - 3.0 TFSI Performance Software is sold separately a
Brand:
ES#:
3082216
Mfg#:
CTS-HW-0133
Ships in 5 Business Days
ON SALE!
SAVE 20%
$159.99
This product was last offered at the strikethrough price on 09-29-2026
Bolt on way to reclaim lost horsepower
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For vehicles with FSI engines only
Brand:
ES#:
6138
Mfg#:
06F198001BLK
In Stock
ON SALE!
SAVE 15%
$202.99
This product was last offered at the strikethrough price on 06-13-2026
Easily increase the supercharger rotational speed to create more boost
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply Late 3.0T Bolt On Pulley - Please Confirm Fitment Before Ordering - Appropriate stage 2 software is requi
Lifetime Replacement
