High-performance iridium alloy spark plug engineered for exceptional durability and enhanced ignitability. Features an ultra-fine 0.6mm wire center electrode that ensures a stable, concentrated spark, quicker engine starts, improved throttle response, and superior anti-fouling characteristics. Built with trivalent metal plating for advanced anti-corrosion and anti-seizing performance, a built-in resistor, a non-projected tip design, and a removable terminal nut.
Specs & Details
- Stock Number: 6664
- Part Number: BR7EIX
- Thread Size: M14 - 1.25
- Reach: 19.0 mm (0.750 in)
- Seat Style: Gasket (Flat)
- Heat Range: 7
- Resistor Type: Resistor (5,000 Ohms)
- Terminal Type: Removable Nut
- Electrode Material: Iridium fine-wire center electrode
Two-Stroke Vehicle Fitment
| Make | Model | Engine Type | Year Range |
| KTM | 250 / 300 XC & XC-W | Two-Stroke Enduro / Cross-Country | 2006–Present |
| Husqvarna | TE 250 / TE 300 | Two-Stroke Enduro / Cross-Country | 2011–Present |
| Yamaha | DT 250 / DT 400 | Two-Stroke Vintage Enduro | Select Vintage Years |
| Suzuki | RM 250 / PE 250 | Two-Stroke Motocross / Enduro | Select Vintage Years |
TSO Garage Note: A medium-cold heat range (7) fine-wire iridium upgrade with a standard 19mm reach. It serves as the high-performance counterpart to the standard BR7ES, heavily favored as a premium anti-fouling upgrade for modern 250cc and 300cc two-stroke woods and enduro bikes (like the KTM XC/XC-W line), as well as vintage mid-to-large displacement air-cooled two-strokes operating under moderate thermal loads.
Compatibility
Fetching compatibility details...
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