Macht Schnell E9X M3 Underdrive Pulley Kit

Vehicle information
$349.00
$349.00
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  • Free shipping over $200
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NOTE: If your power steering belt is double sided, please select 06/2008+

Free additional power to your M3/M5/M6’s rear wheels without sacrificing or compromising your BMW’s reliability.

Machined from 6061-T6 aerospace aluminum, Macht Schnell Performance Underdrive Pulleys are strong as well as lightweight to limit parasitic drag from the accessories within a moderate level for maximum performance on or off the track. After machining and engraving, pulleys are then T3 hard anodized for additional strength, anti-corrosion & wear resistance.

Our Dual-Drive design replaces the Crank Accessory & Power Steering Pulleys, resulting in a 18-20 HP and 16-20ft. lbs TQ gain for the M5/M6 and a 9-14 HP and 7-9ft. lbs TQ gain for the M3. Gains are due to a reduction in power required to turn accessories; an increase in accessories lifespan due to lower speed will also result. All factory harmonics/balancing are undisturbed.

Macht Schnell Performance Underdrive Pulleys have no negative effect on accessory operation and come fully equipped with new belts.

Performance Underdrive Pulleys Features:

  • Dual-Drive design allows maximum performance, with minor affect on accessory speed
  • Proper cooling temperatures are retained at proper levels on or off the track
  • Maintains proper alternator speed, allowing sustained levels to sensitive control modules
  • Machined from 6061-T6 aerospace aluminum
  • T3 Hard-Anodized for maximum strength and corrosion/wear resistance
  • No affects to crankshaft dampening or harmonics
  • Simple bolt-on installation

Models Supported

  • 2008+ E9X M3

NOTE: If your power steering belt is double sided, please select 06/2008+

Macht Schnell E9X M3 Underdrive Pulley Kit

$349.00

Does it come with a warranty?

Parts are covered by the manufacturer's warranty where one is offered. If something goes wrong, contact us and we'll help you with the claim.

What happens if I don't like it?

New, uninstalled parts in their original packaging can be returned within 30 days of delivery. Suspension components (coilovers, springs and dampers), wheel spacers and batteries can't be returned, and a restocking fee applies to approved returns. See our refund policy for details.

How fast is shipping?

In-stock orders usually ship within 1–3 business days. Many parts ship directly from the manufacturer or distributor. Orders over $200 ship free with standard shipping, and faster UPS and USPS options are available at checkout. See our shipping policy.

What's the returns policy?

You have 30 days after receiving your item to request a return. Parts must be new, uninstalled and in their original packaging. Contact us first to start a return. Full details are in our refund policy.

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