HKS SUPER FIRE RACING M40

Marsoni

M251S

$135.00

Get it in 3 business days with 1 day shipping. Friday, May 29

HKS SUPER FIRE RACING M40SKU: 50003 M40 UPC: 4957266720219 HKS Super Fire Racing M40 Spark Plug 2002 2021 Subaru Impreza WRX STI Legacy GT Forester XT HKS Super Fire Racing M40 is a high performance iridium spark plug designed for racing and tuned applications. It fits 2002 2021 Subaru Impreza WRX STI Legacy GT Forester XT models with EJ20 EJ25 engines. Expect stronger ignition sparks for better combustion higher horsepower throttle response and extended plug life under

Easy Shipping

Quick Dispatch:

Your HKS SUPER FIRE RACING M40 orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your HKS SUPER FIRE RACING M40 ships.

Need Help?
Questions about HKS SUPER FIRE RACING M40, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for HKS SUPER FIRE RACING M40 in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Why did you pick this product vs others?: I love the color and the feel but the sizing is wonky. I’m a perfect 7.5. The 7 wears like a 6-6.5 and the 8 is just a little too big. I’m keeping my 7 in the blue and I have a pair in wine/purple in 8 from a few years ago. I just won’t be running a mile in them anytime soon! LOL I love the look!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on June 30, 2025

Verified Purchase

Renee Wilson

Bozeman, US

★★★★★ 5

Soft and comfortable

Great to slip on after being outside

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 3, 2026

Verified Purchase

J.C.

San Leandro, US

★★★★★ 3

Comfortable and good traction

After being impressed by a similar (but not identical) pair of cheap slippers at an AirBnB rental, I searched out these. I bought the 44-45 size for my size 10.5 (US) feet; according to the size chart, that's supposed to fit sizes 10.5 to 11. I find that they're quite large, so that they're loose on my bare feet. In crew socks, they're OK and I use them as house slippers. As advertised, they're soft, flexible, and springy. They grip the floor quite well. They're way better than the Crocs thong-style sandals I was using as bathroom sandals before. All in all, good value for money, but if you're using them as bathroom slippers and you have normal width feet, round the size down if you're at the small end of the stated range.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on October 22, 2024

Verified Purchase

Ada C.

Grantham, US

★★★★★ 5

EQUICK Cloud Slides Pillow Slippers for Women

Very comfortable and lightweight. No stiffness at all.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 25, 2026

Verified Purchase

Ariel

West Palm Beach, US

★★★★★ 5

No free feet pics

Great for supporting my joints. Really helped my injured ankle. They are comfortable and fit well. Great price. I do wish they still produced the buckled sandals. Would buy again!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on August 10, 2025