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Review on πŸ”Œ High-performance NGK CR9EIX Spark Plugs for Suzuki GSX1300R Hayabusa 99-07 by Ronnie Staver

Revainrating 5 out of 5

06 Yamaha YZF-R1 compatible

Not listed but 06 YZF-R1 works. The gap was the maximum allowed size so I mapped them to the middle of the range just because I'm so picky, but they would be fine if I left them alone and added them. If you remap them, make sure you do it right. You will break the electrode if you don't. Don't use the old-school coin-style tool. You need a wire break tool and be very careful. But yes, you can and should adapt your iridium connectors to OEM specifications. If you don't use a hotter coil, you'll run into the coil spec.

Pros
  • Great price
Cons
  • Some nuances