High-performance racing spark plug featuring a fine-wire 1.3mm nickel alloy center electrode, engineered to withstand extreme racing conditions while offering improved ignitability over a conventional standard plug. Built with a solid 98% pure copper core for enhanced heat dissipation, trivalent metal plating for superior anti-corrosion and anti-seizing properties, a built-in resistor, a non-projected tip design tailored for high-output applications, and a standard removable terminal nut.
Specs & Details
- Stock Number: 3230
- Part Number: BR9EG
- Thread Size: M14 - 1.25
- Reach: 19.0 mm (0.750 in)
- Seat Style: Gasket (Flat)
- Heat Range: 9
- Resistor Type: Resistor (5,000 Ohms)
- Terminal Type: Removable Nut
- Electrode Material: Fine-wire (1.3mm) nickel alloy center electrode (Copper core)
Two-Stroke Vehicle Fitment
| Make | Model | Engine Type | Year Range |
| Yamaha | YZ 125 | Two-Stroke Motocross | 1992–2010 (Select Years) |
| Honda | CR 125R | Two-Stroke Motocross | 1999–2007 |
| Husqvarna / Gas Gas | WR 125 / MC 125 | Two-Stroke Enduro / Motocross | 1998–2013 |
| TM Racing | MX 125 / EN 125 | Two-Stroke Motocross / Enduro | 1995–2012 |
TSO Garage Note: A cold heat range (9) fine-wire nickel racing plug with a 19mm reach. The BR9EG is the colder-range sibling to the BR8EG (Stock #3130), serving as a factory or performance-preferred plug for high-revving 125cc two-stroke motocross machines (such as the Yamaha YZ125 and Honda CR125R). The "G" designates a fine-wire 1.3mm center electrode that cuts down on voltage quenching and improves spark ignitability under high-RPM racing loads, though it utilizes a standard removable terminal nut rather than a solid post.
Compatibility
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