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Crankshaft Pulleys & Harmonic Balancers

Keep your drive belt system in check by replacing your BMW's crankshaft pulleys and harmonic balancers.
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ATI Performance Products - Corporate Logo
T#:639878
Part#: VAC-HPCDK-S54-ST
In Stock
$ 1,049.99 USD
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$ 1,049.99 USD
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If you are breaking crankshafts and oil pumps, the cause may be a mystery to you as it has been to many of our customers. We know that controlling the harmonic resonance of the BMW 6 is highly important as RPMs rise, but the ideal configuration of the inline-6 motor makes even experienced engine builders overlook some fundamental principals of engine harmonics that can be destructive. ATI Performance Products has partnered with VAC Motorsports to develop new dampers for BMW 2.5L, 2.8L, 3.0L and 3.2L straight-6 engines found in the E36 and E46 M3, E9X and E6X, as well as newer Z3s and Z4s. These dampers eliminate crankshaft harmonic vibration, which allows the engine to produce more horsepower and torque, while also reducing internal engine wear at the same time. Broken oil pumps and timing chains will be a thing of the past! When used with a VAC accessory pulley, these dampers are a direct replacement over the OEM balancer. They have a 7” outer diameter and include OEM style timing alignment tabs. BMW enthusiasts should know that all ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition. The advantages of the ATI SuperDamper include eliminating vibration issues with inline 6 engines equipped with lightweight clutch and flywheel assemblies, reduced bearing, engine accessories, oil pump wear, and compatibility with underdrive pulleys. Made in the USA.
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ATI Performance Products - Corporate Logo
T#:639880
Part#: VAC-HPCD-S55
In Stock
$ 989.99 USD
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$ 989.99 USD
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If you are breaking crankshafts and oil pumps, the cause may be a mystery to you as it has been to many of our customers. We know that controlling the harmonic resonance of the BMW 6 is highly important as RPMs rise, but the ideal configuration of the inline-6 motor makes even experienced engine builders overlook some fundamental principals of engine harmonics that can be destructive. ATI Performance Products has partnered with VAC Motorsports to develop new dampers for BMW 2.5L, 2.8L, 3.0L and 3.2L straight-6 engines found in the E36 and E46 M3, E9X and E6X, as well as newer Z3s and Z4s. These dampers eliminate crankshaft harmonic vibration, which allows the engine to produce more horsepower and torque, while also reducing internal engine wear at the same time. Broken oil pumps and timing chains will be a thing of the past! When used with a VAC accessory pulley, these dampers are a direct replacement over the OEM balancer. They have a 7” outer diameter and include OEM style timing alignment tabs. BMW enthusiasts should know that all ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition. The advantages of the ATI SuperDamper include eliminating vibration issues with inline 6 engines equipped with lightweight clutch and flywheel assemblies, reduced bearing, engine accessories, oil pump wear, and compatibility with underdrive pulleys. Includes lightweight VAC Billet Crankshaft Pulley. Made in the USA.
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ATI Performance Products - Corporate Logo
T#:639879
Part#: VAC-HPCD-N54
In Stock
$ 1,059.99 USD
Free Shipping
$ 1,059.99 USD
Free Shipping
If you are breaking crankshafts and oil pumps, the cause may be a mystery to you as it has been to many of our customers. We know that controlling the harmonic resonance of the BMW 6 is highly important as RPMs rise, but the ideal configuration of the inline-6 motor makes even experienced engine builders overlook some fundamental principals of engine harmonics that can be destructive. ATI Performance Products has partnered with VAC Motorsports to develop new dampers for BMW 2.5L, 2.8L, 3.0L and 3.2L straight-6 engines found in the E36 and E46 M3, E9X and E6X, as well as newer Z3s and Z4s. These dampers eliminate crankshaft harmonic vibration, which allows the engine to produce more horsepower and torque, while also reducing internal engine wear at the same time. Broken oil pumps and timing chains will be a thing of the past! When used with a VAC accessory pulley, these dampers are a direct replacement over the OEM balancer. They have a 7” outer diameter and include OEM style timing alignment tabs. BMW enthusiasts should know that all ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition. The advantages of the ATI SuperDamper include eliminating vibration issues with inline 6 engines equipped with lightweight clutch and flywheel assemblies, reduced bearing, engine accessories, oil pump wear, and compatibility with underdrive pulleys. Includes lightweight VAC Billet Crankshaft Pulley.
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ATI Performance Products - Corporate Logo
T#:22756711
Part#: 917992
In Stock
$ 370.99 USD
Free Shipping on orders $49 and up

The ATI Super Damper, meticulously designed for late-model 1.6L Mini Cooper engines, stands as the top choice and a rarity with its SFI 18.1 Certification, ensuring optimum performance for your MINI Cooper.

Key Features:

  • Compatible with 2001-2006 Mini Cooper and Mini Cooper S models.
  • Effectively dampens torsional crankshaft vibrations across all RPM levels.
  • Provides protection against engine harmonics.
  • A direct replacement for the OEM unit, ensuring ease of installation.
  • Equipped with a 6-rib serpentine belt drive for reliable performance.
  • Laser-etched timing marks for precision.
  • SFI 18.1 Certified for competition use, meeting rigorous standards.
  • Note: A belt tensioner tool is required to remove or replace the factory belt, and the ATI puller is not compatible with this damper.

Specifications:

  • Shell Material: Aluminum, 6-rib
  • Hub Material: Steel 916102
  • Inertia Weight: 2.20 lbs, 3 ring
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Crank Pulley With Dampener
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:591627
Part#: 11237562801
In Stock
$ 97.71

This product was last offered at the strikethrough price on
05-11-2026

$ 68.99 USD
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$ 68.99 USD
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Smooth out rotational vibrations and maintain optimal engine performance with this pulley-driven unit for your Mini. Over time, wear and drying out can lead to unusual noises near the passenger's side oil pan, indicating the need for replacement. Ensure seamless operation by replacing this unit when necessary, and don't forget to change the hex bolts for comprehensive maintenance.

  • Reduces rotational vibrations for smoother engine operation
  • Prevents unusual noises near the passenger's side oil pan
  • Ensures optimal engine performance and longevity
  • Replacement recommended to maintain engine health
  • Hex bolts replacement advised for thorough maintenance
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Crank Pulley With Dampener
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:38587673
Part#: 11237829906
Ships in 4 Business Days
$ 89.99 USD
Free Shipping on orders $49 and up
Dinan - Corporate Logo
T#:21078436
Part#: D560-0001
Ships in 6 Business Days
Sale - Save 10% $ 449.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 404.96 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 449.99

This product was last offered at the strikethrough price on
07-31-2026

$ 404.96 USD
Free Shipping on orders $49 and up
Dinan's lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13 percent, reducing parasitic drag on the engine for a 6 HP @ 8000 RPM and 4 lb-ft torque @ 8000 RPM gain on a stock vehicle. The Dinan underdrive pulley retains the factory harmonic crankshaft damper, eliminating vibration that might otherwise damage the crankshaft. The kit includes all of the necessary mounting hardware, a lightweight pulley, and shorter belts. This product is backed by our industry-leading 4 year/50,000 mile warranty so you can rest assured that you are purchasing the best quality product for your BMW. Features: All accessories are underdriven by 13% to decrease drag on the engine. Lightweight billet aluminum crankshaft pulley, black anodized and engraved. Includes mounting hardware and shorter belts.
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ATI Performance Products - Corporate Logo
T#:22756691
Part#: 917993
In Stock
$ 370.99 USD
Free Shipping on orders $49 and up

ATI Super Damper for Enhanced MINI Cooper Performance

Upgrade your MINI Cooper with the ATI Super Damper, a top-rated and SFI 18.1 Certified replacement. Designed to fit 2001-2006 Mini Cooper and Mini Cooper S models, this damper is engineered to dampen torsional crankshaft vibrations across all RPM levels, ensuring smooth and reliable performance. It serves as a vital shield against engine harmonics and is a direct replacement for the OEM unit. The 6-rib serpentine belt drive and laser-etched timing marks offer precision and accuracy. Please note that a belt tensioner tool is necessary for removing or replacing the factory belt, and the ATI puller is not compatible with this damper.

Key Features:

  • SFI 18.1 Certified for competition use
  • Provides effective torsional crankshaft vibration damping
  • Direct replacement for the OEM unit
  • 6-rib serpentine belt drive
  • Laser-etched timing marks for precision

Specifications:

  • Shell Material: Aluminum, 6-rib
  • Hub Material: Steel 916102
  • Inertia Weight: 2.20 lbs, 3 ring
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ATI Performance Products - Corporate Logo
T#:7355606
Part#: HPCDK-S50B32-S
Ships in 4 Business Days
$ 1,099.99 USD
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$ 1,099.99 USD
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ATI Performance Products - Corporate Logo
T#:27605443
Part#: ATI-HPCD-B58
Ships on Sep 1, 2026
$ 389.99 USD
Free Shipping on orders $49 and up

Understanding the criticality of harmonic resonance in BMW inline-6 engines, ATI Performance Products has collaborated with VAC Motorsports to craft revolutionary dampers. Designed for BMW 2.5L, 2.8L, 3.0L, and 3.2L straight-6 engines in E36 and E46 M3, E9X, E6X, Z3s, and Z4s, these dampers tackle harmonic vibrations, unlocking heightened horsepower, torque, and longevity. Forget about broken oil pumps and timing chains!

Pairing seamlessly with VAC accessory pulleys, these 7" diameter dampers boast OEM-style timing alignment tabs, ensuring a direct fit over OEM balancers. Notably, all ATI Super Dampers exceed SFI 18.1 Safety Certification for competitive use, making them a must-have for BMW enthusiasts. Benefits extend to eliminating vibration issues with lightweight clutch and flywheel assemblies, reducing wear on bearings, engine accessories, and oil pumps, and harmonizing with underdrive pulleys.

Plus, each package includes the lightweight VAC Billet Crankshaft Pulley, proudly made in the USA for uncompromised quality assurance.

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ATI Performance Products - Corporate Logo
T#:639877
Part#: VAC-HPCD-M50-TR
Ships on Sep 1, 2026
$ 1,139.99 USD
Free Shipping
$ 1,139.99 USD
Free Shipping
If you are breaking crankshafts and oil pumps, the cause may be a mystery to you as it has been to many of our customers. We know that controlling the harmonic resonance of the BMW 6 is highly important as RPMs rise, but the ideal configuration of the inline-6 motor makes even experienced engine builders overlook some fundamental principals of engine harmonics that can be destructive. ATI Performance Products has partnered with VAC Motorsports to develop new dampers for BMW 2.5L, 2.8L, 3.0L and 3.2L straight-6 engines found in the E36 and E46 M3 as well as newer Z3s and Z4s. These dampers eliminate crankshaft harmonic vibration, which allows the engine to produce more horsepower and torque, while also reducing internal engine wear at the same time. Broken oil pumps and timing chains will be a thing of the past! When used with a VAC accessory pulley, these dampers are a direct replacement over the OEM balancer. They have a 7” outer diameter and include OEM style timing alignment tabs. BMW enthusiasts should know that all ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition. The advantages of the ATI SuperDamper include eliminating vibration issues with inline 6 engines equipped with lightweight clutch and flywheel assemblies, reduced bearing, engine accessories, oil pump wear, and compatibility with underdrive pulleys. Kit includes: Damper Lightweight VAC Billet Crankshaft Pulley Mounting and Installation Hardware Trigger Ring for OBD1 systems Note: Will NOT work with S50B30 & S50B32 Euro Engines, For Street/Track cars with Air Conditioning, the Additional A/C Pulley Option is REQUIRED as the OE A/C pulley is not compatible. The additional mounting and installation hardware is also included. Made in the USA
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M7 Speed - Corporate Logo
T#:584439
Part#: 53-3M7101-4
In Stock
$ 159.99 USD
Free Shipping
$ 159.99 USD
Free Shipping

M7 Speed 4% Oversize Crankshaft Pulley for MINI Cooper

Unlocking Performance

The M7 Speed 4% oversize crankshaft pulley is your ticket to unlocking the hidden potential of your MINI Cooper. This performance-enhancing pulley is designed to add power, acceleration, and overall performance to your beloved MINI. Here's how it does the trick:

Performance Boost:

  • Safely speeds up your supercharger, delivering a significant "low end" boost and torque.
  • The result? Your MINI Cooper takes off with newfound energy and responsiveness.

Lightweight Advantage:

  • Weighing just 13 ounces, this pulley is a remarkable 88.5% lighter than the factory version.
  • Reduced crankshaft rotational mass equals more horsepower, torque, and improved throttle response.

Advanced Design

The M7 Speed 4% Crank Pulley isn't just about performance; it's also a work of art. Crafted with advanced computer modeling and precision CNC machining, it's a blend of form and function:

Materials:

  • Made in the USA from billet 6061-T6 aerospace-grade aluminum alloy.
  • Features a deep black anodized coating and laser etching for a sleek look.

Precision Machining:

  • Micro V-Belt grooves meet SAE J1459 specifications to minimize belt slippage, especially at maximum boost.

Optimal Fit:

Use it in conjunction with the M7 Speed 16% Supercharger Technology Pulley for peak performance in MINI tuning.

Reliable Performance

From the factory, MINI lacks a positive drive key on the crankshaft snout to drive the lower pulley. Most aftermarket pulleys are slip-fit and rely on the bolt to prevent slippage. The M7 Speed crank pulley is engineered differently:

Interference Fit:

The pulley is interference-fit onto the crankshaft, ensuring zero slippage even at high RPMs.

Features at a Glance:

  • Super Lightweight: Only 13 ounces (0.3 kg)
  • Sheds 6.2 lbs (2.8 kg) compared to stock
  • Achieves perfect balance through a symmetric design and precision machining
  • Includes a high-quality ARP Racing bolt and precision ground flat washer
  • Installation is a breeze

Unleash Your MINI's Potential

Proudly made in the USA, the M7 Speed 4% Oversize Crankshaft Pulley is the upgrade your MINI Cooper deserves. Unleash its hidden power and enjoy a new level of performance, reliability, and overall driving pleasure. Get ready to experience the difference.

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Vibration Damper
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:38161721
Part#: 11237513862
Ships in 4 Business Days
$ 92.99 USD
Free Shipping on orders $49 and up

Adjustment Pulley W11 1.6L Engine
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:591703
Part#: 11288625983
In Stock
$ 31.99

This product was last offered at the strikethrough price on
08-12-2026

$ 28.99 USD
Free Shipping on orders $49 and up
$ 28.99 USD
Free Shipping on orders $49 and up

Ensure your Mini's engine runs smoothly with the idler pulley, a crucial component in routing the serpentine belt. Discover the benefits below:

  • Smooth Belt Routing: Helps to effectively route the serpentine belt for optimal engine performance.
  • Prevents Rattles: Eliminates high-pitched rattles caused by worn-out bearings, ensuring a quieter driving experience.
  • Easy Installation: Simple bolt-on design requires no special tools, making installation hassle-free.
  • Enhanced Engine Performance: Maintains proper belt tension, preventing slippage and ensuring efficient power delivery.
  • Durable Construction: Crafted from high-quality materials for long-lasting durability and reliability.

Upgrade your Mini's engine with the idler pulley to maintain smooth belt operation and prevent unwanted noises.

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Vibration Damper
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:38195378
Part#: 11231438995
Ships in 4 Business Days
$ 112.99 USD
Free Shipping on orders $49 and up
Crank Pulley With Dampener
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:599037
Part#: 11237638551
Back Ordered
$ 87.99 USD
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$ 87.99 USD
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Febi - Corporate Logo
T#:55066632
Part#: 1004202
Special Order: No Guaranteed ETA
New Item
$ 154.99 USD
Free Shipping on orders $49 and up
This replacement crankshaft harmonic balancer from febi bilstein is designed to restore factory-level drivetrain refinement and protect your engine.
Febi - Corporate Logo
T#:56110333
Part#: 11238602800
Special Order: No Guaranteed ETA
New Item
$ 216.99 USD
Free Shipping on orders $49 and up
Maintain your BMW's smooth engine dynamics and accessory belt reliability with this OE-matching quality replacement crankshaft pulley from Febi Bilstein.

Febi - Corporate Logo
T#:56616373
Part#: 11238602800SK
Special Order: No Guaranteed ETA
New Item
$ 146.99 USD
Free Shipping on orders $49 and up
Protect your engine's bottom end against destructive torsional harmonics with the Febi Bilstein Harmonic Crankshaft Damper Pulley.