TTI FOOTNOTE # 25

Brodix B1BS, Koffel's Original B1 or B1BS Sportsman cylinder heads;  TTi recommends using the following for adequate spark plug clearance when using these cylinder heads.

NGK Spark Plugs  - 14mm thread, 19mm (3/4") reach, 5/8" (16mm) hex size.

• Street use:  part # BKR5E,BKR6E, BKR7E

• Race use:  part # R5671A-7, R5671A-8, R5671A-9, R5671A-10

ACCEL Extreme 9000 wire set with 90º plug ends.

• part #9000