NGK Iridium IX Spark Plug LTR7IX-11 SET of 4

AMAZING CUSTOMER SERVICE! Edge auto sport over anyone else!

Great shipping. Plugs seem to be working well. 10/10 would recommend. Toss in a sticker next order!

Great product and price and even better service

I have been running these spark plugs since i have owned the car, edge auto always comes with fast shipping and great customer service!

more power and longer life than stock!

I’ve been using these in my mazdaspeed3 for the past year or so and I will say these are great!

First time ordering this brand. Impressed and timely shipping.

Used these as replacements for OEM on my 2008 Speed3 and they work great. Appear to be excellent quality and the car runs very well.

These are the best plugs for the mazdaspeed 3 period.

My spark plugs arrived quickly and exactly as expected. Gapping and installing them went smoothly as well. I don't have anymore blowout since putting them in.

Fast shipping, great price, great service. Thanks JP and folks at Edge.

Never had an issue with these spark plugs. They work great

Good product

The plugs seem to be better at low and high rpm and my car doesn't back fire in the morning any more had cheap plugs before thanks edge auto sports

I'm using these spark plugs since about 58k kms/36k miles when I started to modify my 3MPS. I've been through a lot of stages and now the car is at 173k kms/107k miles with a lot of modifications including inside the engine. My only conclusion is that these spark plugs are probably the perfect ones once you start modding your car and even in in the upper stages (big turbo, meth, and so on). They work great both in -35C/-31F winter (yeah, we've been through 1-2 since 2008) and +42C/107F summer days (yes, we have these as well, continental climate gets us).

Had already been running a set of these for long time. Needed some new ones so stuck with the same. No complaints here.

Hi from Australia! I've had these plugs for only about 200 km, but the difference in 1 step colder plugs from the OEM plugs (both NGK I'm pretty certain) are pretty much perfect right now, especially now that we're going into winter season and cold starts are little more rough. I gapped the plugs down to 0.026 which is what is typically recommended. I'm interested to see how they hold up in the future but for what it's worth, with a Cobb stage 1 OTS tune for 98 fuel, engine runs super smooth right now and pulls on cold nights are pushing me into the seat. The two sets of 4 that I ordered through Edge came in less than 2 weeks which is impressive to me, perfect condition, as usual!

Needed new plugs. Mileage improved and plugs seem to work perfectly. Shipping was fast Too!

As usuall edge shipped out extremely quickly and I had my product in 48 hours. Don't forget to gap these to 0.026" and you will be fine. follow this guide if need be http://stratifiedauto.com/blog/spark-plug-tech/

Great plugs. No complaints.

Good price perfect fit, thanks for making buying parts easy!

On my 2nd set of these and am very pleased. 0 issues. Thanks Edge!

Great value and awesome performance. Works like a champ on mazdaspeed 3.

I ordered these on a Tuesday needing better plugs for the tune I was getting that Friday. They got them to my house by Thursday and came with a matchbox car! Thanks egde for your help!

Good plugs,great service, very fast delivery down under

Great price for a quality set of plugs for my MS3. My KR readings have improved since installing these on my car. Edgeautosport delivered them quickly.