NGK Spark Plug - SIMR8A9 Features: Superior construction for delivering serious power and reliability. Designed for a wide range of applications and riding styles. Versatile plugs feature wide operating heat ranges, preventing fouling from running too cool and preignition from running too hot. High-alumina ceramics improve heat dissipation and electrical insulation. Deep-seated copper core provides a wider heat range, ensuring consistent performance. Nickel alloy tip offers enhanced durability and longer life. Ultra-fine (0.6 mm) iridium center electrode reduces voltage requirements, producing a brighter and stronger spark. Traditional ground electrode for reliable performance. Sold individually with instructions included. Specifications: Part Number: 37-SIMR8A9 NGK Reference Number: 91064 Heat Range: 8 Thread Size: 10 mm Thread Reach: 19 mm (3/4") Hex Spanner Size: 5/8" (16 mm) Seal Type: Gasket Seat Terminal Type: Solid/Fixed Terminal Tip Configuration: Projecting Insulator Type Electrode Material: Iridium Center Electrode, Nickel Alloy Tip Type: Resistor Units Sold: Each Weight: 0.05 lbs Compatible Honda Models: CB300F: 2017, 2016, 2015 CB300FA ABS: 2017 CBR250R: 2013, 2012, 2011 CBR250R ABS: 2013, 2012, 2011 CBR300R: 2017, 2016, 2015 CBR300R ABS: 2017, 2016, 2015 CMX300 Rebel: 2017 CRF250L: 2017, 2016, 2015, 2014, 2013 CRF250L ABS: 2017 CRF250L Rally: 2017 CRF250L Rally ABS: 2017 Included Items: (1) Spark plug Instructions Additional Information: NGK SIMR8A9 spark plugs represent the pinnacle of spark plug technology, ensuring optimal ignition, durability, and performance. The advanced iridium center electrode and traditional ground electrode design guarantee consistent, reliable performance for Honda motorcycles, particularly in high-demand environments.