SKU: 2892698419

K&N Performance Air Intake System (57S-4001)

Sale price$229.50 Regular price$255.00
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Description

K&N Performance Air Intake System (57S-4001)K&N 57i Generation II Induction Kits are built primarily for European vehicles. They come with K&N's No Hassle Lifetime Limited Warranty. These intake kits use only non metallic rotationally molded tubes that can reduce air temperature and decrease intake sound over a metal tube. Restriction can exist BETWEEN an air filter and the engine reducing the benefit of a K&N Air Filter alone. The weakest link in the airflow chain robs a vehicle of its natural

K&N 57i Generation II Induction Kits are built primarily for European vehicles. They come with K&N's No-Hassle Lifetime Limited Warranty™. These intake kits use only non-metallic rotationally molded tubes that can reduce air temperature and decrease intake sound over a metal tube. Restriction can exist BETWEEN an air filter and the engine reducing the benefit of a K&N Air Filter alone. The weakest link in the airflow chain robs a vehicle of its natural horsepower. Often that weak point is the factory air path leading to the engine. K&N Air Intake Kits virtually eliminate air path restriction by replacing the air filter and the entire air path to the engine. The aerodynamically engineered tube drives a massive amount of air into an engine, which translates into POWER. 57i Intakes are not legal for use in California and other US States adopting California emission standards.
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Replaces entire factory air intake system
  • Washable and reusable lifetime air filter
  • K&N No-Hassle Lifetime Limited Warranty
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 60 minutes or less
Shipping Notes
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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]
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SKU: 2892698419

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4.5 ★★★★★
Based on 25 reviews
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Product Reviews
M
Verified Purchase
MF Student
Los Angeles, US
★★★★★ 4
Basic knowledge of underwriting is necessary to understand.
Format: Paperback
This is a great guide for underwriting multifamily deals for someone with some basic to moderate knowledge of underwriting. I am a new student to this field and have to stop and google some of the acronyms. For a future version, I think adding an extra page for the acronyms used, definition and equation would be helpful. I think that the font could be larger and darker. Adding mathematical formulas in the book would provide visualization as well. Rob can also provide a sample OM for the reader to use with his underwriting model and compare to his completed one. Again, I am a newbie so my review may change as I gain knowledge in this area. I enjoyed listening to Rob on Youtube/Podcast and hope to learn more from him.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 27, 2020
K
Verified Purchase
K. Okumura
Los Angeles, US
★★★★★ 5
Easy to understand and well organized
Format: Paperback
Author makes complex concepts feel approachable and easy to comprehend. The content is sufficient to be an introductory course
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 22, 2025
J
Verified Purchase
James Carlstedt
Waukegan, US
★★★★★ 5
great read for underwriters of multifamily deals
Format: Kindle
Rob lays out a succinct and thorough summary of his underwriting process, questions industry standards while sharing his opinions, and discusses risk management and analyses for deals during the underwriting process. Highly recommend for newer and more seasoned underwriters and investors to build or sharpen multifamily underwriting fundamentals and details. He also shares his model as the example.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 27, 2023
L
Verified Purchase
LongBoarder
Dallas, US
★★★★★ 3
Needs more meat
Format: Paperback
A little on the light side of information provided. Some nuggets. OK value.
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Reviewed in the United States on December 16, 2022
M
Verified Purchase
Matthew Sinn
Massapequa, US
★★★★★ 5
Full of useful information
Format: Paperback
As context, I've underwritten about 100 deals and attended some basic underwriting classes. Rob's book was very useful to me, both in helping me gain better skills in underwriting basics (stabilization time period and how unit renovations and rent bumps are modeled/phased-in as well as when to start applying rent escalator) as well as higher level topics, like partnership structures, sensitivity analyses, and judging the returns. In all of these higher level topics I learned several new topics (and calculations to add to my underwriting) and would guess that even experienced investors would pick up a few quality nuggets in these sections.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2020

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