Product Description
The 570273 Piston Ring Set is an OEM (Original Equipment Manufacturer) part specifically engineered for Royal Enfield’s 350cc UCE air-cooled engines. Over time, piston rings can wear down, leading to decreased compression, increased oil consumption (white smoke), and a loss of engine power. Replacing worn rings with this genuine set restores the engine’s original performance and efficiency.
These rings are manufactured to precise tolerances to fit a Standard (STD) bore size. They feature high-grade steel and specialized coatings to reduce friction against the cylinder wall while providing a tight seal. This set is essential for top-end engine overhauls and maintenance.
Key Features:
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Perfect Sealing: Ensures maximum combustion pressure for better throttle response and fuel economy.
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OEM Quality: 100% genuine Royal Enfield part for long-term reliability and engine life.
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Full Set (4 Rings): Includes the top compression ring, second scraper ring, and the two-piece oil control ring assembly.
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High Heat Resistance: Built to withstand the high operating temperatures of air-cooled single-cylinder engines.
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Standard Fitment: Designed for original factory-size cylinders (Standard Bore).
Technical Specifications:
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Part Number: 570273
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Compatible Engine: 350cc UCE (Unit Construction Engine)
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Bore Size: Standard (STD)
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Quantity: 1 Set (4 Rings)
Vehicle Compatibility:
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Royal Enfield Classic 350 (All UCE variants: BS3, BS4, BS6)
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Royal Enfield Bullet 350 / 350 ES (UCE Models)
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Royal Enfield Thunderbird 350 / 350X
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Royal Enfield Electra 350 (UCE Models)
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Note: Not compatible with the newer J-Series engines (Reborn models) or legacy Cast Iron/AVL engines.










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