Meet The Crew

Charles Siritho

Founder | CEO

There are many important key factors that drive successful businesses. My name is Charles Siritho and I’m here to leave my mark on the automotive industry. I believe that our customer service will become the industry standard moving forward. Our involvement in the automotive community continues to prove that we truly care about our customer basis. Extensive research and development of our products on the street and race track ensure confidence when purchasing from us. We will excel at digital marketing to the highest level from educational videos to informative instruction manuals that guide you step by step. I have been in this industry since the age of 18 and believe my crew members will change the entire aftermarket industry as a whole. 

When I’m not working (which is never) I thoroughly enjoy racing our 2016 Ford Mustang Ecoboost in California and local Arizona race tracks. I also have a 1989 Nissan 240sx that I encourage everyone to ride in to experience drifting at its best. 

Some interesting facts, I have flown over 170,000 miles in the year 2019 and travel extensively for work and play. Tokyo, Japan has been my favorite place thus far as I have dined at the best sushi restaurant in the world. I hope to revisit and drift the Ebisu circuit in the very near future. 

Feel free to always reach out to me via email ( or social media below.

Charles Siritho’s 2016 Ford Mustang Ecoboost Redline Edition

Chase Hamilton 

Function Factory Performance General Manager / VIP Client Specialist 

Chase was born in Arizona, and while he grew up in 3 different states, found his way back to the desert to where he has been working at Function Factory since late 2020. He found a passion for cars in high school after picking up a 350z and learning to modify it himself, and fix it when it broke (which was pretty often). Shortly after the first Z, he picked up another 350z and taught himself how to swap a 6.0 LS into it. Fast forward to today, he is driving a 370z which is in the process of getting boosted with a single top mount turbo kit. He enjoys working on all types of cars, from hoopties to supercars, but his knowledge and passion lies within Nissan performance, Z’s, G’s, and GTR’s. Even when off the clock, he’s never truly off work. Feel free to reach out through any socials with any questions you have about upgrading your car.

Chase’s 2014 Nissan 370Z

Alex Tillman

Function Factory Racing GT500 Ultimate Arrive & Drive Manager

Alex is an Arizona native who was raised a car enthusiast from day one. Alex enjoys many types of racing including circuit, baja, and drifting. He brings this passion to the GT500 arrive and drive as well as our upcoming ventures with Function Factory Racing. Alex also manages our shop, in house installs, and trackside support. Outside of work Alex has a modified Ford Raptor, equipped with many of our aftermarket parts, he enjoys taking offroad any chance he gets. He is also currently building a dedicated track 240sx to be used for racing and drifting. Alex has experience in NASA HPDE racing as well as Karting and Drifting.

Alex’s 2017 Ford F-150 Raptor

Nyla Kramer

Executive Assistant / Website Product Manager

My name is Nyla, I’m an avid car enthusiast who is always wanting to learn more about the world of motorsports. I was born in Portland and raised in Scottsdale. I grew up in a car-loving family, my dad is an exotic car collector who loves specifically Lamborghini’s and Aston Martins. I am very fortunate to have had a car upbringing and to have driven the majority of supercars on the market today. Thanks to Charles and FFP, I have learned more about American muscle cars, to be driven and dedicated to informing and selling people some of the coolest car mods on the market, and how to drive on a track. A lot of our weekends are spent at the track, where I have learned car control and how to drive on a track fast, safely, and efficiently. I have recently gotten into JDM cars and am currently building a Nissan RPS13 240SX with Charles’ help. My goal is to build this car, get better at drifting, and eventually drive in small drift events as a hobby. A very expensive hobby I have learned. As for my daily life, I mainly work and do car events on the weekends. I daily drive a 2014 C63 AMG 507 edition, it is tuned, and has an exhaust. My dad had a C63 in 2008 right when they came out and I was mesmerized by the car’s looks and sounds, since then it has been a goal of mine to own one and I was fortunate enough to have completed that goal in Nov 2020. My plan for the future is to get more into AMGs, specifically an AMG GTR, track driving, drifting, and to continue building the 240.

Nyla’s 2014 Mercedes-Benz C63 507 Edition

Donny Cope

Function Factory Performance Sales & Order Processing Specialist 

Donny Cope has worked in the automotive industry for going on 5 years and was born and raised in Mesa, Arizona, while not being raised in a motorsports family he picked up interest in the automotive industry during his teenage years. He later went on to buy a 1991 Nissan 240SX S13 Hatch that was already SR20DET swapped and drove that for a couple of years. He has since been working with Function Factory Performance assisting other avid car enthusiasts to build their cars. Outside of work he enjoys attending music festivals and concerts while traveling.

Derek Jones

Function Factory Performance Digital Media Coordinator

Derek’s 2020 Ford Mustang GT

Taylor Katsaros

Function Factory Performance Client Sales & Support Specialist 

Taylor has been an Arizona native for 21 years and counting. She spends the majority of her time working to fund her expensive hobby of modifying cars. She initially found a passion for cars in early high school going to car shows with her friends that would race and modify their cars to the limits. That would eventually lead to her purchasing her first car, a 2017 Ford Mustang V6 completed with full bolt-on’s. Taylor started to learn how to modify and do essential maintenance such as her oil changes, and of course purchasing an ungodly amount of aftermarket car parts to install herself. She has now moved on to bigger and better, her brand new 2020 Ford Mustang GT Performance Pack 1 which she plans on taking out to the track with a complete drag pack. Taylor enjoys going out to car shows/events and the track almost every weekend in her free time. Taylor eventually ran into the FFP Team one night they were out drifting, and now has started her career as a sales/support specialist!

Taylor’s 2020 Ford Mustang GT

Marissa Hanson

Function Factory Racing GT500 Ultimate Arrive & Drive Instructor

Marissa is an American racing driver & model/actress with 10 years of experience driving GT cars. She is currently racing with National Auto Sport Association (NASA) in the Super Touring series and works as a driving instructor in the Arizona region. She is licensed for wheel-to-wheel racing in all NASA regions across the USA and has on track experience with the following car platforms: Audi TTS, Audi S5, Ferrari 458, Ferrari 430 Scuderia, Ford Mustang, BMW 3 Series, Nissan GT-R (race trim and street trim), and Nissan 370Z Nismo. Accomplishments include earning first-place in the 2019 Super Touring II Championship and second place in the 2018 Super Touring II Championship for the Arizona Region. In addition to this, Marissa has also driven on the Nürburgring in Germany, the Monaco F1 circuit and parts of the Le Mans circuit in France.

In her professional career, Marissa has spent nearly 20 years working in the healthcare industry and brings many skills to her role at Function Factory Performance. Her talents include Project Management, Process Improvement, Events Coordination, and Operational Expertise.

Marissa’s 2009 Nissan GT-R ST2 Spec