Triumph DENSO Iridium Power spark plug

Six times harder than platinum, iridium withstands temperatures up to 4,000°F.
Because the iridium electrodes of these plugs can be shrunk to only 0.4mm, voltage requirements decrease while firing performance improves.
360° laser welding of electrode provides a seal that resists wear even in the worst conditions   .
Ground electrode features a tapered cut and U-groove that form a large volume area for the flame's center.
Compatible motorcycles:
Bonneville (all) ← 2015 (air cooled)
Thruxton (all) ← 2015 (air cooled)
Scrambler (all) ← 2016 (air cooled)
Thunderbird 1995 ↔ 2003
Thunderbird T.Sport 1998-2003
Legend TT 1998 ↔ 2001