Standard OE-approved copper core spark plug featuring a unique "bantam" compact overall height and a low-angled ground electrode. This specialized design is explicitly engineered for applications with limited clearance above the cylinder head. 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, and a solid terminal configuration explicitly designed to resist vibration loosening.
Specs & Details
- Stock Number: 3252
- Part Number: BR9ECM
- 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: Solid Terminal (Non-Removable Nut)
- Electrode Material: Nickel alloy center electrode (Copper core) with a low-angled ground electrode
Two-Stroke Vehicle Fitment
| Make | Model | Engine Type | Year Range |
| KTM | 125 SX / 144 SX / 150 SX & XC | Two-Stroke Motocross | 2008–2013 |
| KTM | 85 SX / 105 SX | Two-Stroke Youth Motocross | 2008–2013 |
| Aprilia | RS 250 | Two-Stroke Sportbike | 1995–2004 |
| Yamaha | YZ65 | Two-Stroke Youth Motocross | 2018+ |
TSO Garage Note: A cold heat range (9) specialized resistor plug featuring a compact "bantam" insulator height and a solid terminal. The BR9ECM serves as the colder, high-RPM counterpart to the BR8ECM. It is heavily utilized in smaller-displacement, high-revving European motocross bikes (like the KTM 125/150 SX) and legendary two-stroke track bikes (like the Aprilia RS 250) where clearance above the cylinder head is extremely limited. The compact design prevents physical interference, the solid terminal resists vibration, and the colder heat range effectively dissipates heat during sustained high-RPM operation.
Compatibility
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