Sneed 2011–2017 N18 Remanufactured Cylinder Head
Street & Super Sport Shared Component
The SneedSpeed N18 Remanufactured Cylinder Head is a fully assembled, precision-remanufactured top-end component engineered for 2011–2017 MINI Cooper S models equipped with the N18 turbocharged engine across R55, R56, R57, R58, R59, and R60 chassis.
This cylinder head serves as the common foundation for both Street and Super Sport N18 builds. There are no alternate camshaft or internal valvetrain versions for the N18 platform at these levels—by design. Instead, this head is engineered to provide maximum reliability, sealing integrity, and tuning headroom while maintaining OEM valve timing and drivability.
Role in the SneedSpeed Trade-Up System
On the N18 platform, Street and Super Sport share the same cylinder head architecture.
This head is intentionally positioned as:
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The baseline replacement for worn or damaged N18 engines
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The structural top-end foundation for increased boost and tuning
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The correct starting point before advancing to Race-level airflow changes
Trade-Up on the N18 does not occur through camshaft changes.
It occurs through boost, tuning, fueling, and bottom-end capability.
Core Design Philosophy
Rather than introducing unnecessary complexity, this head focuses on:
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Structural correctness
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Long-term valve sealing
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Thermal stability under boost
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Predictable airflow behavior
By retaining OEM camshaft profiles and port geometry, the engine remains:
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Street-drivable
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Stable under tuning
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Compatible with Super Sport output levels
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Ready for escalation without redoing foundational work
Remanufacturing Standards
Each N18 cylinder head is remanufactured to SneedSpeed standards:
Remanufactured OEM N18 cylinder head casting
Pressure tested for cracks and leaks
Precision-machined deck surface
New valve seals installed
Valve guides inspected and corrected as required
Fully assembled and ready for installation
This process restores compression, oil control, and combustion stability while providing a stronger foundation than a high-mileage factory head.
Street & Super Sport Application
Because Street and Super Sport N18 builds share the same head, this component supports:
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Stock and tuned street vehicles
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Elevated boost and ECU calibration
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Long-term daily use and spirited driving
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Super Sport power levels without compromising drivability
At these levels, performance gains are achieved through system upgrades, not camshaft or head changes.
Applications
2011–2017 MINI Cooper S with N18 engine
R55 / R56 / R57 / R58 / R59 / R60 chassis
Street and Super Sport builds
Direct replacement for worn or damaged N18 cylinder heads
