S14 VAC/ATI Crank Damper - BMW S14B23/B25/B27

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T#:12610319

Part#: VAC-HPCD-S14

Ships in 6 Business Days

$ 699.99 USD

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NOTE: Due to space limitations, the design of this damper will overdrive your components (water pump, power steering, and alternator) by approximately 10-13%; we highly recommend using underdrive pulleys in your setup Controlling the harmonic resonance of the BMW S14 engine is highly important as RPMs rise, but the ideal configuration of the 4-cylinder motor makes even the most experienced engine builders overlook some fundamental principles of engine harmonics that can be destructive. Harmonics destroy these motors by causing extensive oil pump and crankshaft damage, but the addition of VAC’s Harmonic Damper eliminates the unstable crankshaft harmonic vibrations that cause internal engine wear. By eliminating harmonic vibrations, your S14 engine will be able to produce more horsepower and torque with increased reliability. The VAC/ATI Harmonic Damper is made with an integral pulley, eliminating the need for the additional pulley other models require. Exceeds SFI 18.1 Safety Certification Eliminates problems with lightweight clutch and flywheel assemblies Controls destructive harmonic forces Reduces instances of bearing wear, accessory failure and oil pump failure Includes lightweight VAC Billet Crankshaft Pulley Made in USA ATI Performance Products, Inc. is located in Baltimore, MD, and specializes in producing and maintaining high performance products for street and track applications. Over the years ATI has earned a reputation for its cutting edge technology, attention to detail and rigorous testing under race conditions.

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CP Carrillo Forged Piston Set - BMW M20B25

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T#:23847551

Part#: CP-FPS-M20-B25

Ships in 2 Business Days

$ 1,399.99 USD

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$ 1,399.99 USD

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Elevate Your Engine's Performance with Customizable CP Pistons

When it comes to optimizing your engine's performance, flexibility is key. That's why we offer a range of CP pistons with customizable compression ratios to cater to your specific needs. Whether you're embarking on a basic engine rebuild, planning to implement a low boost turbo or supercharger, or aiming to maximize power with high-performance camshafts, we have the ideal piston solution for you.

Our collaboration with CP ensures that you'll receive pistons of the highest quality, meticulously designed to meet the most demanding expectations. These pistons are a top choice for high-performance and racing engines.

We maintain a diverse selection of compression ratios in stock, making it convenient to find the right fit for your project. And if you require a custom piston application, our efficient service has you covered.

BORE: 84mm
Rod Length: 135mm
Compression Ratio: 8.5:1

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VAC Underdrive Power Pulley Set - S14

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T#:598754

Part#: VAC-UPPS-S14-3-G

Ships on Jul 20, 2026

$ 334.99 USD

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$ 334.99 USD

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Made using only virgin billet aluminum, a hard anodized finish, and the tightest tolerances, VAC's pulley sets are used on some of the fastest S14s on the planet. This lightweight design optimizes performance and response while under-driving components just the right amount for proper function. Perfect for track cars, they can also be used on a street car without any problems. Features: Reduces pump cavitation at higher rpm's Saves weight when every bit counts Includes new, correct length, labeled Contitech belts for WP, ALT, P/S

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VAC Motorsports Performance Coated Rod Bearing Set - BMW E30 M3 S14 ...

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T#:638307

Part#: VAC-HPRBS-S14STD

Ships on Jul 20, 2026

$ 249.99 USD

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$ 249.99 USD

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VAC Rod Bearing Sets are specially coated to reduce friction to a minimum; enabling lower temps and faster revolutions in your expensive S14 engine. The coated bearings are thermal breakdown resistant, helping to prevent premature engine failures under stress when things are most critical. The rod bearing area is a common stress area in the S14, these bearings can last much longer than any normal bearing sets and are used in all of VAC's highest performance BMW engine builds. These bearings have become a favorite product of all of VAC's race and engine building customers around the globe who have reported unparalleled wear characteristics under all conditions. Made for VAC by the same company who manufactures for the US military, NASCAR teams, and other customers that require "mission-critical" quality. If you are looking for high-performance rod bearings, this is the set for your S14. VAC Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended. There are no returns available on any engine bearings.

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ARP Rod Bolt Set - M20 - 53mm

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T#:1061435

Part#: ARP-RBS-M20

Ships on Jul 20, 2026

$ 314.99 USD

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$ 314.99 USD

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ARP, the world’s leader in fastener technology. There is no substitute for the best! Planning to boost your M20? Building a high HP stroker engine? This rod bolt kit is for you! This kit provides higher strength, more clamping power, and the option to re-use the hardware unlike your OEM bolts. We run these in many of our own builds as well and are 110% satisfied with the fit and finish of these ARP bolts. We offer a 53mm UHL version for those running OEM M20 rods or a 44mm UHL version for those who have upgraded to S50/S52 OEM rods.

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CP Carrillo Forged Piston Set - BMW M20B25

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:22591977

Part#: CP-FPS-M20-B25-8

Ships in 7 Business Days

$ 1,399.99 USD

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$ 1,399.99 USD

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Elevate Your Engine's Performance with Customizable CP Pistons

When it comes to optimizing your engine's performance, flexibility is key. That's why we offer a range of CP pistons with customizable compression ratios to cater to your specific needs. Whether you're embarking on a basic engine rebuild, planning to implement a low boost turbo or supercharger, or aiming to maximize power with high-performance camshafts, we have the ideal piston solution for you.

Our collaboration with CP ensures that you'll receive pistons of the highest quality, meticulously designed to meet the most demanding expectations. These pistons are a top choice for high-performance and racing engines.

We maintain a diverse selection of compression ratios in stock, making it convenient to find the right fit for your project. And if you require a custom piston application, our efficient service has you covered.

BORE: 85mm
Rod Length: 135mm
Compression Ratio: 8.8:1

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CP Carrillo Forged Piston Set - BMW M20B25

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:34583154

Part#: CP-FPS-M20-B25A

Ships on Jul 20, 2026

$ 1,399.99 USD

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$ 1,399.99 USD

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Elevate your engine's performance with a choice of compression ratios that suit your needs. Opt for stock compression when conducting a basic engine rebuild or for low boost turbo or supercharger applications. If you plan to run high-performance camshafts, added compression can significantly enhance your engine's capabilities. On the other hand, if you're aiming for a big boost turbo setup, low compression is the way to go. CP and this distributor have collaborated closely to bring you the finest pistons for your high-performance or racing engine. These pistons are meticulously crafted to meet the most rigorous standards and are unrivaled in quality. Piston Specifications: BORE: 84.5mm Rod Length: 135mm Compression Ratio: 8.8:1

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VAC Motorsports BMW Engine Parts for BMW 3 Series E30 (1984-1991)

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S14 VAC/ATI Crank Damper - BMW S14B23/B25/B27

CP Carrillo Forged Piston Set - BMW M20B25

Elevate Your Engine's Performance with Customizable CP Pistons

VAC Underdrive Power Pulley Set - S14

VAC Motorsports Performance Coated Rod Bearing Set - BMW E30 M3 S14 ...

ARP Rod Bolt Set - M20 - 53mm

CP Carrillo Forged Piston Set - BMW M20B25

Elevate Your Engine's Performance with Customizable CP Pistons

CP Carrillo Forged Piston Set - BMW M20B25

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