Common fit for KSR/KLX and Honda 2 valve Heads
NGK fits 49/86/90/110/120/125/140/150/160/170
C6HS-A Hot
C7HS-A Mid This is the standard type
C8HS-A Cool
10mm thread.
1.25 pitch
From WWW.NGK.COM
"NGK's Standard Plugs are Constructed for Longer Life and Optimum Performance.
- Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
- Corrugated Ribs Prevent Flashover
- Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
- Copper Core Aids in Heat Removal
- Triple Seals Prevent Leakage"