Check out what one of our own had to say in a recent article put out by PRI over ignition systems.
Spark Plug Assortment
Brisk Spark Plug Assortment
| Part Number | Type | Thread | Reach | Hexagon | Seat | Design | Resistor | Projected |
|---|---|---|---|---|---|---|---|---|
| NOR15LGS Spark Plug | Premium Racing | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Premium LGS | yes | yes |
| NR12S Spark Plug | Silver Racing | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Silver Racing | yes | no |
| NR12YC Spark Plug | BRISK Super | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Copper Alloy Electrode | yes | yes |
| NR14C Spark Plug | BRISK Super | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Copper Alloy Electrode | yes | no |
| NR14S Spark plug | Silver Racing | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Silver Racing | yes | no |
| NR14TXS Spark Plug | Premium Racing | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Multi-Spark Racing | yes | yes |
| NR14YC Spark Plug | BRISK Super | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Copper Alloy Electrode | yes | yes |
| NR15C Spark Plug | BRISK Super | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Copper Alloy Electrode | yes | no |
| NR15S Spark Plug | Silver Racing | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Silver Racing | yes | no |
| NR15YC Spark Plug | BRISK Super | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Copper Alloy Electrode | yes | yes |
| NR17C Spark Plug | BRISK Super | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Copper Alloy Electrode | yes | no |
| NR17YC Spark Plug | BRISK Super | 14mm | 12.7mm-1/2" | 21mm-13/16" | gasket | Copper Alloy Electrode | yes | yes |
| P1 DOR15YIR-9 Spark Plug | Iridium Yttrium | 14mm | 22mm | 16mm-5/8" | gasket | Iridium Performance | yes | yes |
| P10 BR14YIR Spark Plug | Iridium Yttrium | 12mm | 19mm-3/4" | 16mm-5/8" | gasket | Iridium Performance | yes | yes |
| P11 MR14YIR-1 Spark Plug | Iridium Yttrium | 12mm | 26.5mm-1.05" | 14.3mm-9/16" | gasket | Iridium Performance | yes | yes |
| P15 Spark Plug | BRISK Super | 14mm | 9.5mm- 3/8" | 17.5mm-11/16" | gasket | Copper Alloy Electrode | no | no |
| P15Y Spark Plug | BRISK Super | 14mm | 9.5mm- 3/8" | 19mm | gasket | Copper Alloy Electrode | no | yes |
| P17 Spark Plug | BRISK Super | 14mm | 9.5mm- 3/8" | 17.5mm-11/16" | gasket | Copper Alloy Electrode | no | no |
| P18Y Spark Plug | BRISK Super | 14mm | 9.5mm- 3/8" | 19mm | gasket | Copper Alloy Electrode | no | yes |
| P2 DR15YIR-1 Spark Plug | Iridium Yttrium | 14mm | 19mm-3/4" | 16mm-5/8" | gasket | Iridium Performance | yes | yes |
| P21 DOX15BYIR Spark Plug | Iridium Yttrium | 14mm | 22mm | 16mm-5/8" | gasket | Iridium Performance | yes | extra-projected |
| P22 DR14BYIR Spark Plug | Iridium Yttrium | 14mm | 19mm-3/4" | 16mm-5/8" | gasket | Iridium Performance | yes | yes |
| P23 RR15BYIR-3 Spark Plug | Iridium Yttrium | 14mm | 25mm-1" | 16mm-5/8" | tapered | Iridium Performance | yes | yes |
| P24 RR17BYIR-3 Spark Plug | Iridium Yttrium | 14mm | 25mm-1" | 16mm-5/8" | tapered | Iridium Performance | yes | yes |
| P25 GR17BYIR-3 Spark Plug | Iridium Yttrium | 14mm | 18mm- .708" | 16mm-5/8" | tapered | Iridium Performance | yes | yes |
| P3 ER15YIR-1 Spark Plug | Iridium Yttrium | 14mm | 26.5mm-1" | 16mm-5/8" | gasket | Iridium Performance | yes | yes |
| P4 DR15YIR Spark Plug | Iridium Yttrium | 14mm | 19mm-3/4" | 16mm-5/8" | gasket | Iridium Performance | yes | yes |
| P5 RR15YIR-1 Spark Plug | Iridium Yttrium | 14mm | 25mm-1" | 16mm-5/8" | tapered | Iridium Performance | yes | yes |
| P6 GR15YIR-12 Spark Plug | Iridium Racing | 14mm | 18mm- .708" | 16mm-5/8" | tapered | Iridium Performance | yes | yes |
| P7 DR17YIR-1 Spark Plug | Iridium Yttrium | 14mm | 19mm-3/4" | 16mm-5/8" | gasket | Iridium Performance | yes | yes |
| P8 MR14YIR-9 Spark Plug | Iridium Yttrium | 12mm | 26.5mm-1" | 14mm | gasket | Iridium Performance | yes | yes |
| P9 DR14YIR Spark Plug | Iridium Yttrium | 14mm | 19mm-3/4" | 16mm-5/8" | gasket | Iridium Performance | yes | yes |
| PR17 | BRISK Super | 14mm | 9.5mm- 3/8" | 19mm | gasket | Copper Alloy Electrode | yes | no |
| PR18Y Spark Plug | BRISK Super | 14mm | 9.5mm- 3/8" | 17.5mm-11/16" | gasket | Copper Alloy Electrode | yes | yes |
| QR08S Spark Plug | Silver Racing | 12mm | 26.1mm-1.05" | 16mm-5/8" | gasket | Silver Racing | yes | no |
| QR10S Spark Plug | Silver Racing | 12mm | 26.1mm-1.05" | 14mm | gasket | Silver Racing | yes | no |
| QR12LS Spark Plug | Silver Racing | 12mm | 26.1mm-1.05" | 16mm-5/8" | gasket | Silver Racing | yes | extra-projected |
| QR14BFXC | Premium EVO | 12mm | 26.5mm-1.05" | 16mm-5/8" | gasket | Premium EVO | yes | yes |
| QR14LS Spark Plug | Silver Racing | 12mm | 26.1mm-1.05" | 16mm-5/8" | gasket | Silver Racing | yes | extra-projected |
| QR15BFXC Spark Plug | Premium EVO | 12mm | 26.1mm-1.05" | 16mm-5/8" | gasket | Premium EVO | yes | yes |
| QR15LC Spark Plug | BRISK Super | 12mm | 26.1mm-1.05" | 16mm-5/8" | gasket | Copper Alloy Electrode | yes | extra-projected |
| QR15LC-1 Spark Plug | BRISK Super | 12mm | 26.1mm-1.05" | 14mm | gasket | Copper Alloy Electrode | yes | extra-projected |
| QR15LS Spark Plug | Silver Racing | 12mm | 26.1mm-1.05" | 16mm-5/8" | gasket | Silver Racing | yes | yes |
| ROR12LGS-T Spark Plug | Premium Racing | 14mm | 25mm-1" | 16mm-5/8" | tapered | Premium LGS | yes | yes |
| ROR14LGS Spark Plug | Premium Racing | 14mm | 25mm-1" | 16mm-5/8" | tapered | Premium LGS | yes | yes |
| ROR15LGS Spark Plug | Premium Racing | 14mm | 25mm-1" | 16mm-5/8" | tapered | Premium LGS | yes | yes |
| RR08S Spark Plug | Silver Racing | 14mm | 26.5mm-1" | 16mm-5/8" | tapered | Silver Racing | yes | no |
| RR10S Spark Plug | Silver Racing | 14mm | 25mm-1" | 16mm-5/8" | tapered | Silver Racing | yes | no |
| RR12S Spark Plug | Silver Racing | 14mm | 25mm-1" | 16mm-5/8" | tapered | Silver Racing | yes | no |
| RR12YS Spark Plugs | Silver Racing | 14mm | 26.5mm-1" | 16mm-5/8" | tapered | Silver Racing | yes | yes |
