NGK Spark Plug – JR9B

The NGK Spark Plug – JR9B is a NGK motorcycle part or accessory for the application identified below. The confirmed fitment, construction, package and product reference details are gathered here to help prevent an incorrect purchase.

Before ordering, compare the exact part reference, dimensions, motorcycle model and model year with the component being replaced or upgraded.

• The NGK JR9B is a compact nickel-electrode resistor plug built for high-revving motorcycle engines that need a colder heat range
• A genuine NGK item, ready to fit straight out of the box
• 12mm thread diameter with a 1.25mm pitch, 19mm reach and gasket seat
• Heat range 9 for hard-working, high-output engines
• Nickel centre electrode over a copper core for strong heat dissipation
• Built-in 5k ohm resistor to suppress radio and electronic interference
• 18mm hex with a threaded stud terminal to suit standard plug caps and spanners
• Supplied pre-gapped at 0.7mm always check against your bike’s workshop manual