Product Description
The Varroc 5828 is an OE-spec replacement for the ignition control system. Unlike older CDI units, this TCI module works in conjunction with the battery to provide a more powerful and consistent spark, which is essential for the smooth idling and reliable starting of the 350cc Twinspark engines.
Manufactured by Varroc, a primary technology partner for Royal Enfield, this unit features a pre-mapped ignition curve that optimizes fuel combustion and reduces engine “knocking.” The Green 6-Pin Coupler is specifically designed to prevent incorrect wiring and ensures a waterproof, vibration-resistant connection. The internal circuit is encapsulated in a specialized high-density resin to protect it from the intense mechanical resonance and heat generated by the engine.
Key Features:
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Optimized Spark Timing: Delivers precise ignition advance for better throttle response and improved fuel efficiency.
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TCI Technology: Provides a higher energy spark compared to traditional CDI systems, aiding in effortless electric starts.
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Green Safety Coupler: Features the industry-standard green color-coded socket for a guaranteed match with the OE wiring harness.
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Vibration & Heat Shielded: Built to withstand the rugged operating conditions of the Royal Enfield chassis without signal drift or component failure.
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Plug-and-Play Installation: Designed as a direct drop-in replacement; no ECU flashing or wiring modifications required.
Technical Specifications:
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Part Number: 5828 (Vendor Code: VT-5828)
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Brand: Varroc
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Ignition Type: Transistorized Coil Ignition (TCI)
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Connector: 6-Pin Green Coupler
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Voltage: 12V DC
Vehicle Compatibility:
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Royal Enfield Classic 350 (UCE Twinspark Models, 2010–2021)
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Royal Enfield Electra 350 (UCE Models)
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Royal Enfield Thunderbird 350 (UCE Models)
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Note: Specifically for models with the Green Connector. Please verify your existing TCI unit’s color code before purchase, as some variants use a Black or Blue coupler.









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