Product Description
The 592798/B RR Unit is the factory-original (OEM) charging regulator listed in the official parts catalogue as “RR UNIT ELECTRA UCE KS”. Its primary function is to convert the AC current generated by the stator into a stable DC charge for the battery, preventing both overcharging (which can “boil” the battery) and undercharging (leading to dead starts).
If your motorcycle is experiencing dimming headlights at idle, a weak horn, or a battery that won’t stay charged despite being new, the RR unit is the most likely culprit. This genuine part features a high-grade aluminum heat sink for superior cooling and factory-spec couplers that prevent loose connections—a common failure point in aftermarket alternatives.
Key Features:
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Genuine OEM Part: 100% authentic Royal Enfield spare (PN: 592798/B), replacing the older 592798/A revision.
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Single-Phase Regulation: Calibrated specifically for the electrical load of Kick-Start UCE models.
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Stabilized Voltage Output: Protects sensitive electrical components (CDI, Bulbs, Horn) from high-RPM voltage spikes.
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Industrial Heat Management: Heavy-duty aluminum fins ensure the unit stays within safe operating temperatures during long rides.
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Direct Plug-In: Features factory-molded connectors for a secure, “click-lock” fit to the main wiring harness.
Technical Specifications:
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Part Number: 592798/B (supersedes 592798/A)
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Component Type: Single-Phase Regulator Rectifier (RR Unit)
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Material: Die-Cast Aluminum & High-Grade Electronics
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Quantity: 1 Number
Vehicle Compatibility:
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Royal Enfield Bullet 350 UCE (Kick Start)
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Royal Enfield Electra 350 UCE (Kick Start)
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Standard UCE 350cc (Kick-Start Variants, BS3/BS4)
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Note: This unit is specifically for Kick-Start (KS) models. If your bike is an Electric Start (ES) or Twinspark model, it likely requires a 3-Phase RR Unit (e.g., 581206/C) instead.











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