High-performance copper-core racing spark plug engineered to withstand extreme combustion pressures and severe thermal loads. Features 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, and a solid terminal.
Specs & Details
- Stock Number: 3993
- Part Number: BR10EG
- Thread Size: M14 - 1.25
- Reach: 19.0 mm (0.750 in)
- Seat Style: Gasket (Flat)
- Heat Range: 10
- Resistor Type: Resistor (5,000 Ohms)
- Terminal Type: Solid Terminal
- Electrode Material: Nickel alloy center electrode (Copper core)
Two-Stroke Vehicle Fitment
| Make | Model | Engine Type | Year Range |
| Honda | CR 125R / CR 250R | Two-Stroke Motocross | 1978–2007 |
| Honda | CR 80R / CR 85R / CR 85RB | Two-Stroke Youth Motocross | 1986–2007 |
| Yamaha | YZ 80 / YZ 85 / YZ 125 | Two-Stroke Motocross / Mini | 1984–2004 |
| Kawasaki | KX 125 / KX 250 | Two-Stroke Motocross | 1974–2007 |
TSO Garage Note: An ultra-cold-heat-range (10) racing plug featuring a solid terminal and non-projected tip, widely utilized in high-revving competition two-strokes, vintage open-class motocross bikes, and shifter karts (KZ / Mod Moto) running under intense sustained rpm and thermal stress.
Compatibility
Fetching compatibility details...
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