NGK DR-9 EA spark plug, compatible with different motorcycle models. Thanks to advanced technology, NGK guarantees a performance standard for spark plugs that can withstand even extreme conditions. Technical features: - External diameter: 18.0 mm - Threaded part diameter: 12.0 mm - Threaded part length: 19.0 mm - Space between electrode: 0.7 mm - Resistance: 5 kOhm