Product Description
The 570716/C Cylinder Head Nut is an OEM-standard M8 fastener with a 1.25mm thread pitch. It is commonly used to secure the rocker covers or fasten various parts to the cylinder head of 350cc and 500cc UCE motors.
Being an engine-critical part, it is manufactured from hardened steel to withstand the extreme thermal cycles and constant vibrations of a single-cylinder engine. The latest “/C” revision features a specific hex-head finish that is resistant to rounding off, provided the correct socket size is used. Replacing a stripped or corroded nut with this genuine part is vital to prevent oil seepage from the rocker area and to ensure accurate torque settings during engine assembly.
Key Features:
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Engineered Strength: Made from high-tensile material to handle the high torque required for cylinder head components.
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Precision Threading: M8 x 1.25mm pitch ensures a perfect, vibration-resistant fit on the cylinder head studs.
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Corrosion Protection: Finished with a protective coating to prevent rust and seizing in the high-heat environment of the engine.
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OEM Standard: 100% original Royal Enfield part, guaranteeing the exact metallurgy used during factory assembly.
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Standard Hex Head: Designed for easy installation using standard metric spanners or sockets.
Technical Specifications:
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Part Number: 570716/C (Supersedes 570716/A)
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Size: M8 (8mm)
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Thread Pitch: 1.25mm
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Material: Hardened Alloy Steel
Vehicle Compatibility:
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Royal Enfield Classic 350 / 500 (All UCE Variants)
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Royal Enfield Bullet 350 / 500 (UCE Models)
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Royal Enfield Thunderbird 350 / 500 / 350X / 500X
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Royal Enfield Bullet Trials 500
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Royal Enfield Continental GT 535











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