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Description
K&N Race Specific Air Filter (SU-7511R)This K&N racing air filter has just two layers of cotton to provide even lower air restriction than our replacement air filter for street vehicles. Unlike K&N replacement air filters, fuel management modifications will be necessary with this racing filter. K&N racing air filters are washable and reusable and come with a one year limited warranty. This product is for closed course competition use only. Designed to increase horsepower and acceleration
This K&N racing air filter has just two layers of cotton to provide even lower air restriction than our replacement air filter for street vehicles. Unlike K&N replacement air filters, fuel management modifications will be necessary with this racing filter. K&N racing air filters are washable and reusable and come with a one year limited warranty. This product is for closed course competition use only.- Designed to increase horsepower and acceleration
- Designed for racing and track applications, not for street use
- Washable and reusable air filter
- Low restriction
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4.2 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Thank you
Format: Paperback
I’ve job
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
★★★★★ 5
Great Resource
Format: Paperback
Great resource that adds to your learning. Give rationals
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Reviewed in the United States on December 5, 2025
★★★★★ 1
DO NOT PURCHASE THIS BOOK.
Format: Paperback, Format: Paperback
If I could give zero stars, I would. Do not purchase if you intend to use the Access Code. I was very careful to scratch off the Access code, but you can see it was still unreadable. I went to the website and submitted a ticket. One option for a reason to submit a ticket is 'unreadable access code", so they know this is a problem. They ask for a photo of the code and a receipt of purchase. I sent both. Then they asked for proof that the book was purchased NEW. This was not noted on the Amazon invoice. I was instructed to reach out to the vendor for the additional info. Or I could spend more money on another access code. There are other study options available.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
Great study book
Format: Paperback
Questions are very similar to my current program questions and have great rationales.
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Reviewed in the United States on November 18, 2025
★★★★★ 3
Some errors
Format: Paperback
Not too good as I think. Some error between hard copy and online q&a bank. Very careful if you want to study with this
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 21, 2025
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