NGK GR8DI-8 / GR9DI-8 Spark Plug - Iridium Racing

The NGK GR9DI-8 is a top-of-the-range racing spark plug, developed for highly tuned kart and motorcycle engines that run at extreme revs and under high thermal loads. The fine iridium centre electrode ensures a powerful and precise spark, reducing the risk of misfires even at top speed.

With a heat range of 9, M14 × 1.25 mm thread, 19 mm length and 16 mm hex, it offers exceptional thermal stability and durability. NGK Iridium technology makes it ideal for applications that require consistency, power and reliability even in the toughest conditions.

Key features:

• Brand: NGK, world leader in racing spark plugs
• Model: GR9DI-8
• Heat range: 9 (iridium, racing, "cold" spark plug for highly tuned engines)
• Thread: M14 × 1.25 mm
• Thread length: 19 mm
• Hex: 16 mm
• Electrode gap: ~0.6 mm
• Centre electrode: fine-tip iridium
• Type: with resistor (resistor)
• Seat: with washer (gasket seat)
• Applications: karts, racing motorcycles, high-performance racing engines under heavy thermal load

Recommended for use with spark plug cap code K188-H

An extreme spark plug, designed for those who push their engine to the limit: stable spark, maximum reliability and longer life than conventional spark plugs.

• Brand: NGK
• Code: KC310

Available in 2 versions: choose from the menu.

Price includes VAT.