Brisk Iridium Performance P5 RR15YIR Spark PlugP5 RR15YIR Iridium Yttrium Brisk Performance Spark Plugs Brisk SKU P5 RR15YIR Parameters: Thread Diameter 14mm Thread Reach 25mm 1" Hexagon 16mm 5 8" Seat Type Tapered Design Iridum Yttirum Resistor Yes Projected Yes Heat Range 15 Brisk P5 RR15YIR Replaces: With very long lifespan, the P range Brisk spark plugs are the most modern design to fit modern highly efficient and stressed engines. The Iridium core center electrode is surrounded by Yttrium

NAOR14LGS Premium LGS Brisk Racing Spark Plugs

Brisk SKU  -  MR10

Heat Range  -  17

NGK Racing plug 4075 R7238-8

Ideal for forced induction

Brisk SKU  -  AOR12LGS

Brisk BR10ZS Replaces:

Race Fuels and Nitro

This design suppresses the quenching effect during cold starts

cut-back ground el

DR12YS Brisk Racing Silver Spark Plug

Brisk SKU  -  DOR15YTE-1