NGK BPR5ES-11 spark plugs:
- Harley-Davidson '84-'99 EVO big twin engine
- S&S cycle 80", 96", 100", 107"
- Superior construction for serious power
- Versatile plugs with wide operating heat ranges prevent fouling from running too cool and preignition from running too hot
- Features high alumina ceramics for improved heat dissipation and electrical insulation, deep-seated copper core for a wider heat range and a nickel alloy tip for longer life