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![@ SPARK PLUG THREAD CHASER 10MM_12MM_14MM AND 18MM MOST_50'S_&_70'S (DOES_"C"_"D"_"B"_NGK) (327A)](https://s.turbifycdn.com/aah/dratv/spark-plug-thread-chaser-10mm-12mm-14mm-and-18mm-most-50-s-70-s-does-c-d-b-ngk-327a-3.gif)
WILL DO ALL Z50 XR50/70 CRF50/70 CT70 ATC70 TRX70 TRX90 MOST 4 CYCLE 50'S AND 70'S
12MM PLUGS = CT90 ATC90 CT110 ATC110 OR MOST OLDER 90CC HONDA'S
Threads
There are currently three spark plug thread diameter and pitch sizes used on motorcycles and ATVs: 10 mm x 1.0, 12 mm x 1.25 and 14 mm x 1.25. There are currently two thread reaches (lengths) used: 1/2 inch and 3/4 inch
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