we have a HUGE range of sparkplugs for Mazda Rotary Street and High HP applications. 

Genuine NGK Iridium

BR8EIX

BR9EIX

BR10EIX

RE7C-L (rx8 leading)

RE9B-T (rx8 trailing)

NGK Laser Platinum Spark Plugs

BUR9EQP

BUR7EQP

Genuine NGK Racing Competition Spark Plugs

B9EG

B8EG

B10EG

BR8EG

BR9EG

BR10EG