• Rugged Radios Rugged Radios 4C IMSA Helmet Kit - Straight Cord, Mic & 3.5mm
  • Rugged Radios Rugged Radios 4C IMSA Helmet Kit - Straight Cord, Mic & 3.5mm
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Rugged Radios

Rugged Radios 4C IMSA Helmet Kit - Straight Cord, Mic & 3.5mm

Rugged Radios 4C IMSA Helmet Kit - Straight Cord, Mic & 3.5mm

$89.00 USD
$89.00 USD
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HK-IF

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  • Ships in 1–2 business days
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Key Features

  • Configuration: 4-conductor (4C) IMSA plug
  • Cord: straight
  • Microphone: dynamic noise-cancelling on a full-flex boom
  • Audio out: 3.5mm (1/8 in) jack for mono earbuds (earbuds not included)

The Rugged Radios 4C IMSA Helmet Kit (HK-IF) is a wired in-helmet communication kit for sports-car road racing that uses a 4-conductor IMSA plug and a straight cord, with a dynamic noise-cancelling mic and a 3.5mm (1/8 in) earbud jack. It is trusted in series such as LMP2, GT3, GT4 and TCR and installs into most helmets.

Compatibility

Connects to a standard IMSA car harness using the 4-conductor (4C) plug. This version has an earbud jack and requires mono earbuds; it does not include helmet speakers. Does not fit a 3-conductor NASCAR harness. The mic boom and cable junction block install with hot glue or the Rugged Quick Mount (HK-QM, sold separately); it is not a plug-in-only install.

Specifications

  • Configuration: 4-conductor (4C) IMSA plug
  • Cord: straight
  • Microphone: dynamic noise-cancelling on a full-flex boom
  • Audio out: 3.5mm (1/8 in) jack for mono earbuds (earbuds not included)

FAQ
What racing harness does this IMSA kit plug into?

It uses the 4-conductor (4C) IMSA plug and connects to a standard IMSA car harness. It does not fit a 3-conductor NASCAR harness.

Does it use earbuds or built-in speakers?

This version uses a 3.5mm jack for mono earbuds and does not include helmet speakers. For built-in speakers, choose the HK-IFSP speaker version.

How does the kit mount in the helmet?

The mic boom and junction block attach with hot glue or the Rugged Quick Mount (sold separately).

Shipping & Returns

Free shipping on orders $250+ (standard items). Oversized items ship at calculated rates.

30-day returns with RMA required. 15% restocking fee, buyer pays return shipping. Defective items returned free with full refund.

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