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Description
Injen 18-21 Subaru WRX STI H4-2.5L Turbo SP Aluminum Series Cold Air Intake - Wrinkle RedInjen Technology has done it once again with this new short ram air intake for the 2018 2021 Subaru WRX STI Equipped with the H4 2. 5L Turbo Engine. The Injen Technology SP1208 performance air intake system is the result of countless hours invested in research and development to provide a proven intake system designed to add power and performance to your STI. The Injen Technology SP1208 intake system is a direct replacement for that restrictive
Injen Technology has done it once again with this new short ram air intake for the 2018-2021 Subaru WRX STI Equipped with the H4-2.5L Turbo Engine. The Injen Technology SP1208 performance air intake system is the result of countless hours invested in research and development to provide a proven intake system designed to add power and performance to your STI. The Injen Technology SP1208 intake system is a direct replacement for that restrictive factory airbox and provides a engineered solution that allows that turbo to breathe deeply and produce it's full power potential with a simple drop-in install. To top it all off, no tune is required to get the power numbers noted!
Installation Instructions- Note: This product is not currently CARB exempt and is not available for purchase in California or for use on any vehicle registered with the California Department of Motor Vehicles.
- Injen's MR Technology provides massive power gains while maintaining A/F ratios
- Includes custom heat shield specifically designed for this application
- Smooth intake piping eliminates restrictions and improves airflow
- Dyno Proven gains of up to 26 hp and 24 lb-ft. of torque
- No additional tuning required and no check engine lights
- Huge 3.250in mandrel-bent 6061-T6 aluminum intake tubing
- Fully serviceable Injen SuperNano-Web dry air filter
- Features Injen's patented MegaRam (MR) Technology
- Replacement air filter part number X-1059-BB
- Aggressive engine tone under full throttle
- Injen Technology Limited Lifetime Warranty
- Optional Hydroshield part number 1040BLK
- Available in multiple finishes
- Made in Pomona California, USA
- Short Ram Air Intake Design
- SP1208WB (Wrinkle Black)
- SP1208WR (Wrinkle Red)
- SP1208P (Polished)
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2018-2021 | Subaru | WRX STI | Base |
| 2018-2021 | Subaru | WRX STI | Limited |
| 2019 | Subaru | WRX STI | S209 |
| 2018 | Subaru | WRX STI | Type RA |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.2 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Great cooling pillow, and cat-approved!
Color: Purple, Size: Standard, Color: Purple, Size: Standard
I've been using this EGOHOME cooling gel memory foam pillow for a few weeks now, and the cooling feature is definitely the standout for me. The reversible cooling cover really does what it promises — it feels noticeably cool to the touch, especially when the AC is on, and makes a big difference on warmer nights. It helps create that fresh, cool sleep surface that makes it easier to relax and fall asleep.
Beyond the cooling comfort, the memory foam strikes a great balance between soft and supportive. It keeps my neck aligned whether I sleep on my side or back, and I’ve been waking up feeling more rested with much less neck stiffness than before.
The removable, washable cover is also a practical plus. One small note: the cooling effect does gradually fade after an hour or two without AC, so pairing it with a fan or air conditioning helps maintain that cooler feel longer.
And perhaps the highest endorsement I can offer: my cat Duoduo claimed it immediately. She’s been loafing on it with a look of complete ownership ever since — I’d say that’s the ultimate comfort test passed.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Cool, Supportive, and Very Comfortable Pillow
Color: Blue, Size: Standard, Color: Blue, Size: Standard
I really liked this pillow from the first night. It feels soft but still gives very good support to the head and neck, so it feels comfortable in different sleeping positions. I also liked the cooling side, which feels nice especially at night when the room gets warm. The pillow has a good shape, feels well made, and the cover is easy to remove and wash, which is very helpful for regular use.
Overall, I feel this pillow is worth buying if you want comfort and support together. It gives a nice balance, not too hard and not too soft, and I woke up feeling more relaxed. The cooling feature, washable cover, and memory foam support make it very practical for everyday use. I am happy with this purchase and would definitely recommend it.
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Reviewed in the United States on May 12, 2026
★★★★★ 3
To think and the best cooling
Color: Blue, Size: Standard
The pillow is a little to thin..not as thick as it should be. The cooling feels good for a short period then looses it cooling for me.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Great pillow
Color: Blue, Size: Standard, Color: Blue, Size: Standard
Great pillow very comfortable and supportive
I was pleasantly surprised by this pillow. It has the perfect balance between softness and support, keeping my neck well aligned throughout the night.
The material feels high quality and it doesn’t get too hot, which is a big plus. After a few nights, I noticed better sleep and less neck discomfort.
Highly recommend!!!!
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Comfortable and stays cool
Color: White-cooling Basic, Size: Queen(Pack of 1)
Great pillow. When i opened it, i noticed a strange smell, i assumed its the smell of whatever they use to make the pillow stay cool. You have to fluff it for a good amount of time to make sure the cooling agent spreads well in the foam. Is what i assumed atleast. Its a perfect amount of softness for me. Pair it with some bamboo pillow cases and you got a good night of sleep
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Reviewed in the United States on May 9, 2026
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