Simtac LB6S21C 360° LED Indicator Bulbs (Amber, 12V 3W) – Straight Pin & Cross Pin for Royal Enfield, Hero, Honda, Bajaj, TVS, Yamaha

Stock halogen indicator bulbs fade, run hot and are barely visible in harsh Indian traffic. Simtac LB6S21C 360° LED Indicator Bulbs are designed to fix exactly that by giving your bike or scooter a bright, crisp amber blink that’s hard to miss in day or night riding.

Each bulb uses a 12V, ~3W LED module with 360° reflecting design, delivering around 240 lumens of focused amber light while drawing far less current than a standard filament bulb. That means better visibility for the rider behind you, less load on the battery and longer life compared to cheap generic LEDs.

This LB6S21C pack is built around Simtac’s popular “360° reflecting LED indicator bulbs” platform, offered here in the most useful Indian combo: Amber – Straight Pin for Royal Enfield / Jawa style holders and Amber – Cross Pin for popular Hero, Honda, Bajaj, TVS, Suzuki and Yamaha bikes and scooters.

Use them as a smart safety + style upgrade on city commuters, tourers, scooters and Royal Enfield machines. Just match your socket type (straight vs cross pin), plug them in and enjoy a sharper, more premium blink.

Buying from Under The Hood means you get genuine Simtac stock, workshop-backed fitment guidance, careful packing and honest compatibility support instead of random marketplace sellers guessing what fits your motorcycle.

Key Features 

• 360° reflecting LED design for uniform amber indicator light, clearly visible in day and night traffic.

• 12V, ~3W per bulb with approx. 240 lm brightness – strong signal output with very low battery load.

• Available in two pin formats: Amber Straight Pin (for RE / Jawa style holders) and Amber Cross Pin (for most Hero, Honda, Bajaj, TVS, Suzuki, Yamaha).

• Genuine Simtac 360° LED indicator bulb platform, not generic or unbranded LEDs.

• Long-life solid-state construction designed for Indian heat, dust, vibrations and daily commuting.

• Plug-and-play retrofit into existing indicator bulb holders – no wire cutting when the socket matches.

• Saves battery power compared to 21W halogen indicator bulbs, ideal for bikes loaded with accessories.

• Works on a wide range of 12V motorcycles and scooters; clear notes for bikes with single dash indicator arrow to avoid wiring surprises.

Compatibility Table

Electrical: 12V DC indicator circuits, bulb-type indicators (not for OE LED indicators).

Variant A – Amber Straight Pin (Indicator bulb with straight bayonet pins)

Variant B – Amber Cross Pin (Indicator bulb with cross-offset bayonet pins)

Important Note (all variants):

• On bikes with only one indicator arrow on the cluster (shared left/right bulb), Simtac warns that the bulbs may not work correctly unless an additional solution (diode/adapter) is installed.

• Always verify your current bulb type (straight vs cross pin) before ordering.

Variants

• Variant 1 – Amber Straight Pin (Default for RE/Jawa)

  • 12V, ~3W 360° LED indicator bulbs.

  • Suited for Royal Enfield, Jawa and other bikes using straight-pin indicator holders.

• Variant 2 – Amber Cross Pin (LB6S21C)

  • 12V, ~3W 360° LED indicator bulbs.

  • Suited for common Hero, Honda, Bajaj, TVS, Suzuki & Yamaha bikes/scooters using cross-pin holders.

(Under The Hood can list these as a single product with variant dropdown for “Straight Pin” and “Cross Pin”.)

What’s in the Box

• 4 × Simtac 360° Reflecting LED Indicator Bulbs – Amber (Straight Pin or Cross Pin as selected).

• 1 × Tax invoice from Under The Hood (required for brand warranty & support).

Installation & Usage Notes

• Remove one stock indicator bulb and visually confirm whether the pins are straight or cross-offset before choosing a variant.

• These are plug-and-play bulbs for compatible holders – do not cut or modify wiring.

• On many bikes and scooters (e.g., Activa 125), LED indicator bulbs may cause hyper-flashing; use an LED-compatible flasher relay or Simtac hazard module to restore normal blink rate.

• If your bike has a single indicator arrow for both sides on the dashboard, you may need an additional Simtac solution (diode kit/adapter) as per the brand’s own note.

• Ensure all four indicators are upgraded together for consistent brightness and load.

• Avoid touching LED chips directly; hold the bulb by the base while installing.

• After installation, check indicators with ignition ON and hazard function (if installed) before riding.

FAQs

Q1. Will these Simtac LB6S21C bulbs fit my bike?
If your bike/scooter uses 12V bulb-type indicators and has either straight-pin or cross-pin holders, one of these variants will usually fit. Confirm by removing a stock indicator bulb and checking the pin style, then match it with the variant you select. Use the compatibility table for confirmed models.

Q2. Do I need to change the flasher relay or install a hazard module?
On many models, switching from 21W halogen to low-watt LED indicators can cause fast blinking (hyper-flash). In that case, you’ll need an LED-compatible flasher relay or a Simtac hazard controller/relay kit to bring the blink rate back to normal.

Q3. Are these bulbs brighter than the stock halogen indicators?
Yes. Each bulb uses a 360° reflecting LED design and delivers around 240 lumens of focused amber light, giving significantly better side and rear visibility compared to most stock halogen indicator bulbs while drawing much less power.

Q4. Will these work on bikes with a single indicator arrow on the instrument cluster?
They can, but Simtac clearly notes that bikes with a single dash indicator may require an additional solution (diode/adapter) to avoid incorrect behaviour. If your bike has a single indicator arrow, please WhatsApp Under The Hood before ordering so we can guide you properly.

Q5. Are these original Simtac products or local copies?
Under The Hood sources Simtac bulbs directly through authorised distributors. Packaging, labelling and performance match the official “Simtac 360° reflecting LED indicator bulbs” line, and every order is billed with GST invoice for warranty support.