VAC Motorsports Harmonic Damper by ATI, BMW S54
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Product Details
The VAC Motorsports Harmonic Damper by ATI is designed to control harmful crankshaft harmonics in BMW S54 engines. Developed by VAC and ATI, it offers a solution for performance and competition applications, including engines fitted with lightweight clutch and flywheel assemblies.
VAC reports use in race engines operating at 9,500–10,000 rpm, both with and without its S54 Stroker Kit.
Key features
- Designed to control destructive harmonic forces.
- Helps reduce bearing wear, accessory failure and oil pump failure.
- Includes a lightweight VAC billet crankshaft pulley.
- 7-inch outer diameter with OEM-style timing alignment tabs.
- Exceeds SFI 18.1 safety certification requirements and is approved for competition.
- Made in the USA.
Included in the kit
- ATI/VAC S54 Harmonic Damper.
- VAC crank pulley.
- VAC fitting hardware.
Crank pulley options
- Standard: standard diameter, suitable for use with underdriven accessories.
- Overdrive: suitable for supercharged applications.
- Underdrive: not recommended for use with an underdrive water pump pulley, as this combination may slow coolant circulation excessively and affect cooling.
Important fitting information
This damper will not work with a factory damper pulley. The original supplier specifies that the VAC Underdrive Power Pulley is required for correct operation. The kit is described as a direct bolt-on solution when used with the included VAC crank pulley. Confirm the correct pulley configuration for your application before fitting.
Configurations are also available for use with VAC dry sump kits.
About ATI
Based in Baltimore, Maryland, ATI Performance Products specialises in high-performance components for street and competition use. VAC partnered with ATI to develop this damper for BMW applications.
Shipping & Delivery
Shipping times vary from brand to brand. We're currently updating our product pages with accurate delivery dates.
For an estimated delivery date on this part, please email sales@cpcclubsport.com.
Why CPC Clubsport?
CPC Clubsport was started by two friends who've spent years building, driving and developing their own BMW M cars – on the road, on track and at the Nürburgring.
Around 90% of our range has been tried, tested or developed on our own cars. Every part is chosen for quality, reliability and a genuine purpose on track, and we're always happy to help you find the right fit for your car.
Need Help?
Not sure if this part fits, or which option is right for your car? Our team is happy to help.
Call us
07767 134595
Available Monday to Friday, 9am to 5pm.
Email us
sales@cpcclubsport.com
We aim to reply within 48 hours.
To help us give you the right answer first time, have your BMW model, chassis code, year and details of any existing modifications to hand.
You can also browse our FAQs or visit our contact page.
What our customers say
Excellent
5.0 out of 5 · Based on 15 reviews
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I went with the Endless MX-72 Plus Brake Pads for my G8X and they've been a great upgrade. The pedal feels positive and the pads give plenty of confidence when braking hard. They also work well for normal road driving, which was important to me. CPC Clubsport made the whole ordering process easy.
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Used Endless RF-650 during a brake service on my M3. The fluid was well packaged and arrived quickly from CPC Clubsport. After getting the car back on the road, the pedal feels firm and consistent, including during some spirited driving. A quality product and good service.
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About CPC Clubsport
By drivers, for drivers
CPC Clubsport was founded by two friends with a lifelong passion for BMW Motorsport. We’ve spent years building, driving and developing our own cars, from the road to the track and the Nürburgring.
Around 90% of what we stock has been tried, tested or developed through our own cars and with friends along the way, and every product is chosen for quality, performance, reliability and a genuine purpose on track.