NGK 93188 LMAR9AI-10 Laser Iridium Spark Plug for KTM/Husqvarna/GasGas/Husaberg

Vehicle Fitment

• 2014 Husaberg FE250 (Base)
• 2015-2016 Husqvarna FE250 (Base)
• 2019 Husqvarna FE350, FE450, FE501 (Base)
• 2014-2016 KTM 250 XCF-W (Base)
• 2017-2019 KTM 250 EXC-F (Base, Six Days)
• 2017-2019 KTM 350 EXC-F (Base, Six Days)
• 2017-2019 KTM 450 EXC-F (Base, Six Days)
• 2017-2023 KTM 500 EXC-F (Base, Six Days)
• 2018-2025 KTM 790 Duke / Duke L (Base)
• 2019-2025 KTM 790 Adventure / Adventure R (Base)
• 2020-2023 KTM 890 Duke / Duke R / Duke GP (Base)
• 2021-2025 KTM 890 Adventure / Adventure R (Base)
• 2024 KTM 990 Duke (Base)
• 2025 KTM 990 Duke R (Base)

Fitment Notes

• OEM KTM / Husqvarna / GasGas cross-reference: 77839093000
• Single-cylinder models (EXC-F, FE, XCF-W series) require 1 plug per motorcycle
• Parallel-twin models (790 / 890 Duke, 790 / 890 Adventure, 990 Duke) require 2 plugs per motorcycle
• Fitment spans KTM's LC4, LC8c, and 790/890 parallel-twin engine platforms - always verify your specific model via OEM part number 77839093000
• Pre-gapped at 0.039"-0.040" (1.0mm); verify against your bike's service manual before installation
• No automotive fitment - motorcycle/powersports application only

Features

• Fine-wire laser-welded iridium center electrode (0.6mm) for consistent, high-energy spark across diverse KTM engine platforms
• Taper-cut platinum ground electrode reduces quenching and supports reliable combustion in high-revving single and parallel-twin engines
• Trivalent metal shell plating delivers superior anti-corrosion and anti-seizing protection
• Pure alumina silicate ceramic insulator provides superior strength and optimized heat transfer
• 98% pure copper core aids heat dissipation across a wide operating range
• Triple seals prevent combustion gas leakage around the plug shell

Specifications

• NGK Part Number: LMAR9AI-10
• Thread Diameter: 10mm
• Thread Pitch: 1.0mm
• Reach: 26.5mm (1.04")
• Hex Size: 9/16" (14mm)
• Seat Type: Gasket (Flat)
• Terminal Type: Solid (Non-Removable Nut)
• Pre-Set Gap: 0.039"-0.040" (1.0mm)
• Center Electrode: Iridium Fine Wire, 0.6mm (Projected)
• Ground Electrode: Platinum, Taper Cut
• Resistor Value: 5K Ohm
• Heat Range: 9
• Torque Spec - Cast Iron Head: 7.2-10.8 lb-ft
• Torque Spec - Aluminum Head: 7.2-8.7 lb-ft

Included Components

• 1x NGK LMAR9AI-10 Laser Iridium Spark Plug (93188)

Product Description

The NGK 93188 (LMAR9AI-10) is the OEM-specified Laser Iridium spark plug for a wide range of KTM, Husqvarna, GasGas, and Husaberg off-road and street models, replacing OEM part number 77839093000. It covers single-cylinder enduro platforms (EXC-F, FE, XCF-W series) as well as KTM's LC8c parallel-twin lineup including the 790 and 890 Duke and Adventure series. Plug quantity per motorcycle varies: single-cylinder models require 1 plug, while parallel-twin models require 2.

Engineered with a fine-wire 0.6mm iridium center electrode and taper-cut platinum ground electrode, this plug delivers reliable ignition across the full rpm range - from trail riding to high-speed street use. It installs as a direct OEM replacement with no modifications required. Buyers should confirm their specific model and year against OEM part number 77839093000 before ordering.