Why Upgrade?
Factory head bolts stretch and lose clamping force over time—especially in tuned or boosted applications. The SneedSpeed Head Stud Kit solves this with a race-tested, reusable stud system that ensures consistent pressure, reliable sealing, and long engine life.
SneedSpeed Cylinder Head Stud Kit for Mini Cooper S & JCW (R55-R59, N14/N18 Engines)
High-Performance Head Stud Kit for MINI Cooper Turbo Engines
Upgrade your MINI’s engine with the SneedSpeed Mini Cooper Cylinder Head Stud Kit—a premium bolt-on solution for serious performance builds. Designed specifically for Mini Cooper S and JCW models (R55, R56, R57, R58, R59) with the N14 or N18 engine, this head stud kit delivers maximum clamping force, precision, and durability to prevent head gasket failures under boost or extreme heat.
Whether you're building a high-boost street car or a full track monster, this kit is engineered to handle the stress. Unlike OEM torque-to-yield bolts, SneedSpeed’s high-strength head studs are reusable, provide more accurate torque values, and ensure long-lasting head sealing integrity.
? Key Features:
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Fits N14 & N18 Engines (2007–2015 R55-R59 Mini Cooper S and JCW)
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Forged 8740 Chromoly Steel Studs: Extreme strength under high cylinder pressure - Compare to ARP
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Reusable Design: Ideal for engine teardowns, rebuilds, or boost upgrades
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Improved Torque Accuracy: Prevents uneven head pressure and gasket failure
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Includes 12-Point Nuts and Hardened Washers for perfect torque application
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Complete Installation Instructions included
✅ Ideal For:
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Turbocharged and Supercharged MINIs
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Engine rebuilds or head gasket replacements
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Track and autocross builds
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High-performance street cars
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Preventative upgrades for tuned MINI Coopers
⚙️ Vehicle Compatibility:
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2007–2015 Mini Cooper S / JCW
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R55 Clubman
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R56 Hatchback
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R57 Convertible
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R58 Coupe
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R59 Roadster
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Engines: N14 / N18 Turbocharged 1.6L
