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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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Description
Kartboy 04-21 Subaru WRX STi 6-Speed Short Shifter KitExperience sharper and more precise gear changes with the Kartboy 04 21 Subaru WRX STi 6 Speed Short Shifter Kit. Expertly engineered to reduce the throw distance, this shifter kit allows you to shift faster and feel more connected to your vehicle's drivetrain, enhancing your driving enjoyment and performance on both street and track. Designed specifically for Subaru WRX STi models from 2004 to 2021 with a 6 speed transmission, this kit is a direct
Experience sharper and more precise gear changes with the Kartboy 04-21 Subaru WRX STi 6-Speed Short Shifter Kit. Expertly engineered to reduce the throw distance, this shifter kit allows you to shift faster and feel more connected to your vehicle's drivetrain, enhancing your driving enjoyment and performance on both street and track.Designed specifically for Subaru WRX STi models from 2004 to 2021 with a 6-speed transmission, this kit is a direct bolt-on replacement, making installation straightforward and hassle-free. Crafted with durability in mind, the components offer improved shift feel while maintaining reliability during spirited driving sessions.
Whether you're a weekend warrior or a daily enthusiast looking to elevate your driving experience, the Kartboy short shifter kit is an indispensable upgrade. Backed by Kartboy's reputation for quality and performance, this part fits perfectly within your drivetrain category and complements your vehicle's sporty character.
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
4.6 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
A reliable set of spark plugs.
They’re made in Germany, what else can you say
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Work as well as the NGK's
Bought for a 2016 Mazda 6, I had NGK's in it for 5 months and had misfires, didnt have the money to throw more NGK's at it for troubleshooting. Bought these to try and they work great so far.
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Reviewed in the United States on April 29, 2026
★★★★★ 4
Faulty plug? Otherwise great set
Definitely better than the old plugs that probably had 80k miles on them.
The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine.
Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Upgrade from OEM
After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is.
These were an upgrade from OEM parts. They were gapped perfectly for the car.
They took 20mins to fit and work fine.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Very good
The best quality. Runs like new again.
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Reviewed in the United States on March 12, 2026