Product Overview
The EAZ Sprag Clutch Gear Set (Part No. 592593/A) is a high-performance “One-Way” clutch assembly designed specifically for the Unit Construction Engine (UCE) platform. This version features the later, reinforced design adopted to handle the high torque loads of 350cc and 500cc engines. It resolves common electric-start issues like slipping, grinding noises, or the starter motor spinning without cranking the engine.
Key Features:
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Improved SBI Design: Features a reinforced sprag mechanism designed to handle high-torque cranking and prevent damage from engine kick-backs.
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One-Way Precision: Locks instantly in one direction to transfer torque to the crankshaft and freewheels in the other to protect the starter motor.
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Heavy-Duty Hardened Steel: Manufactured from premium forged alloy steel with hardened rollers for superior wear resistance and a longer service life.
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Complete Gear Set: Includes the sprag clutch bearing, engine sprocket, and the main drive gear for a comprehensive system overhaul.
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Enhanced Engagement: Precision-machined internal cams ensure a reliable, “first-press” start even in cold weather conditions.
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QC Checked & Verified: Each unit is factory-tested for tolerance and alignment to ensure a rattle-free, smooth operation.
Product Specifications
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Assembly Type: Sprag Clutch / One-Way Self Gear
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Material: High-Tensile Forged Steel & Copper Components
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Finish: Industrial Polished Steel
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Quantity: 1 Complete Set
Vehicle Compatibility
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Royal Enfield Classic 350 / 500 (UCE, BS3/BS4/BS6 Models)
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Royal Enfield Bullet 350 / 500 (UCE Electric Start Models)
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Royal Enfield Electra 350 (UCE Models)
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Royal Enfield Thunderbird 350 / 500 (UCE Variants)
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Royal Enfield Continental GT 535
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Note: Not compatible with new J-Series (Reborn/Meteor/Hunter) or 650 Twins.











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