VAC Motorsports Performance Cylinder Head Service, BMW S55

Built in-house. Proven on track. VAC S55 CNC-ported cylinder heads deliver real airflow, real power, and real reliability. Core required.

Options:

Port Design:

Add Combustion Chamber Modification $599.95 additional charge

Price: $1,299.95

Quantity:

SKU: VAC-S1PCH-S55

Sharing Discount has been applied

Tell A Friend

Description

S55 owners—this is where airflow, reliability, and real power come together.

Every VAC S55 cylinder head service is performed in-house in our state-of-the-art machine shop by our skilled engine builders and engineers. Using Centroid 5-Axis CNC porting on the intake and exhaust ports and a Newen CNC multi-angle valve job, we increase airflow efficiency, improve top-end power, and create the headroom needed for higher boost and sustained track use.

All VAC cylinder head services are performed on existing customer cores. This requires the customer's core to be supplied to VAC for servicing.

Don’t have a core? Contact our sales team to have one sourced: Sales@VACmotorsports.com

Average horsepower results (with proper tuning):
• Stage 1 typically supports 10–20 WHP gains on bolt-on setups, while improving consistency and long-term reliability
• Stage 3 commonly supports 30–50+ WHP gains on higher-boost or upgraded turbo builds, with stronger top-end pull and better power per pound of boost

On larger turbo or track-focused builds, benefits often include faster spool at the same boost, cooler EGTs, and increased tuning headroom.

Service Options & Pricing:

Stage 1 – $1,299.95
• Valve guides*
• Valve seals
• CNC multi-angle valve job
• Resurfaced mating surface
• Complete assembly

Stage 3 – $4,799.95
• 5-Axis CNC porting (intake & exhaust)
• Performance valves
• Performance springs
• Performance retainers
• Valve guides*
• Valve seals
• CNC multi-angle valve job
• Resurfaced mating surface
• Complete assembly

*Includes valve guide labor costs. If new valve guides are required, an additional charge will be added.

Power is airflow. Reliability is precision. This is how you unlock both.

Customer Reviews

There are currently no reviews of this product.

New

Product Details

Options	SKU	Price
Options: Stage 1; Port Design: ---	VAC-S1PCH-S55	$1,299.95
Options: Stage 3; Port Design: Mild	VAC-S3PCH-S55	$4,799.95
Options: Stage 3; Port Design: Aggressive	VAC-S3PCH-S55	$4,799.95

Returning Customer? Log In | My Account

215.462.4666 | sales@vacmotorsports.com

Use Non-Mobile Version

Back Check Out

Enter Coupon Calculate Shipping Redeem VAC e-Gift Certificate

Shipping Policy Return Policy

eCommerce Platform by TrueCommerce

Back

Submit Review

Your feedback is very important so VAC can serve you and the BMW community best.
Please let us know how you liked this product!

Your Rating:

Review Title: (Example Review Title: VAC Product Review Request - Help Us Please)

Your Name:

Submit Anonymously

Your City:

Your State/Province:

Your Country:

Your Review:

Submit Cancel

Back

In Stock Notification

First Name:

Last Name:

Notify me when the VAC Motorsports Performance Cylinder Head Service, BMW S55 is in stock.

Submit Cancel

Close

Back

In Stock Notification

First Name:

Last Name:

Notify me when the VAC Motorsports Performance Cylinder Head Service, BMW S55 is in stock.

Submit Cancel

Close

Back

Tell a Friend

Your Name:

Your E-Mail Address:

This address will not be collected or stored

Your Friend's Name:

Your Friend's E-Mail Address:

This address will not be collected or stored

The e-mail to your friend will include standard text from VAC Motorsports, including a link to the product VAC Motorsports Performance Cylinder Head Service, BMW S55 and a picture, if available. If you would also like to include personalized text, please enter it in the box below.

Your Personalized Text: (optional)

Send Cancel