VAC Motorsports' Flanged Cylinder Sleeves are the ultimate foundation for your high-performance BMW S68 build. Crafted from centrifugally cast ductile iron, these sleeves are precision-machined in-house and designed to handle the extreme demands of today's boosted and high-horsepower applications.
Whether you're chasing displacement, higher boost levels, or increased engine longevity, our flanged sleeves deliver unmatched durability, superior heat dissipation, and the strength to support serious power.
π§ Key Benefits of VAC Engine Sleeving:
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Increased Bore Size
Gain displacement and power by safely increasing bore size, giving your build more room to breathe and deliver torque.
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Extreme Strength Under Stress
Ductile iron is significantly stronger than factory alusil under high cylinder pressures--ideal for turbocharged, supercharged, or high-compression applications.
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Custom Cylinder Wall Thickness
Thicker cylinder walls support aggressive builds and allow tuning flexibility, especially in high-boost environments.
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Superior Heat Dissipation
Efficiently manages the extreme temperatures of performance driving, helping prevent hot spots and detonation.
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Enhanced Engine Longevity
Protect your investment--our sleeves reduce the risk of cracking and catastrophic engine failures common in high-stress builds.
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Designed for High-Performance Modifications
Built to work seamlessly with forged pistons, advanced camshaft profiles, and forced induction systems.
π Installation Note:
Engine sleeving is not a DIY job. This is a complex, high-precision process that should be performed by experienced machine shops familiar with BMW engine blocks. VAC Motorsports offers full in-house sleeving services backed by decades of engine-building expertise. Contact our team for build consultations and component guidance.
π BMW S68 Applications:
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