Iridiums for an EVO

[nmainehunter]

Does anyone run these in their EVO?

[Hossamania]

A waste of money.
Stick with the stock HD plugs or an equivalent from one of the name brand manufacturers.

[Ohio HD]

I have not run them in an Evo or TC, or any HD for that matter.

The main purpose of Iridium spark plugs is longer life. There is some advantages with the small center electrode, allowing a spark path with less voltage.

[98s1lightning]

I've got NGK R 

BPR5ES-11 in my evo, stock ignition and compression

20k and counting on those with no issues to my knowledge

[JSD]

NGK i in all my motors

[HogMike]

All my bikes except for one.
LOL
 
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[guido4198]

NGK Iridiums in the '99 Evo motor in my'85 FXRS. Best plug I've ever run and that's based upon comparisons done while using the bike in a daily commuting situation. Same ride every day, close to 100 mi. roundtrip, every day, same route...mostly I-95 down here in Fla. Slight improvement in gas mileage was definitely observed. I routinely pulled them at 15,000 mi. "just because".
Necessary...absolutely not. I like to try stuff so over the course of the 39 yrs and 320,000 mi. I've ridden this bike...I've tried different things, just because. 

[thumper 823]

Whish ever plugs you use index them to the intake

[98s1lightning]

Whish ever plugs you use index them to the intake

What material shims are you using for indexing

[Dan89flstc]

Whish ever plugs you use index them to the intake

Waste of time.

[fatbobber]

I use Nology wires and matching silver plugs from Nology, always great results .
Had those wires and plugs tested on a Buell , years ago , the guy who worked the dyno said plugs don't do anything....that setup showed 3 solid horsepowers gain over the standard setup with Accel wires and NGK plugs . You don't have to believe me ,i know what the dyno said . I don't have the sheet anymore,it's to long ago but i do know they work .

[jsachs1]

I use Nology wires and matching silver plugs from Nology, always great results .
Had those wires and plugs tested on a Buell , years ago , the guy who worked the dyno said plugs don't do anything....that setup showed 3 solid horsepowers gain over the standard setup with Accel wires and NGK plugs . You don't have to believe me ,i know what the dyno said . I don't have the sheet anymore,it's to long ago but i do know they work .

And WHY do you think that happened ? 
John