The Royal Enfield Genuine Shaft Double Gear (Part No. 570072/D) is a critical internal engine hardware component designed for the Unit Construction Engine (UCE) platform. This precision-ground pin serves as the solid mounting anchor and rotational axis for the electric starter motor’s dual/double idle gear mechanism.
this shaft features a flawlessly smooth, hardened surface designed to handle high torsional loads and rapid rotational friction whenever the electric start button is pressed. Using an authentic 570072/D shaft ensures the idle gears stay perfectly aligned, preventing gear binding, grinding noises, or damage to the starter clutch assembly.
Key Features:
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100% Genuine Part: Authentic Royal Enfield engine hardware as verified by the official factory label in image_196d45.png.
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Hardened Steel Construction: Meticulously heat-treated to resist surface wear, scoring, or indentation from high-speed gear rotation.
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Micro-Tolerance Finish: Machined to precise factory diameters to ensure zero play and smooth rotational clearance for the double gear.
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Essential for Reliable Starting: Maintains the critical alignment between the electric starter motor pinion and the engine flywheel.
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Thermal Stability: Engineered to withstand high engine oil temperatures inside the primary inner crankcase.
Technical Specifications:
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Brand: Royal Enfield Genuine
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Part Number: 570072/D
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Component: Shaft Double Gear (Starter Idle Gear Pin)
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Material: Hardened High-Tensile Alloy Steel
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MRP: ₹160.00 for a pack of 10 (₹16.00 per unit)
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Country of Origin: India
Motorcycle Compatibility
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Royal Enfield Classic 350 / 500 (All Twinspark UCE Models)
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Royal Enfield Bullet 350 / 500 / ES (Electric Start UCE Models)
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Royal Enfield Thunderbird 350 / 500 / X (UCE Platform)
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Royal Enfield Electra 350 (UCE Twinspark)











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