Function Factory Performance Shop
The People Behind The Parts

THE FACTORY CREW

Real enthusiasts. Real builders. Real performance. Meet the team driving FFP forward from our 5,000 sq ft facility in Thousand Oaks, California.

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THE DRIVING FORCE

Co-Owner Charles Siritho 01

CHARLES SIRITHO

Founder Managing Partner Co-Owner McLaren Specialist Driver Coach
The Driving Force Behind FFP

With over 14 years of hands-on experience in the automotive industry, Charles Siritho founded Function Factory Performance with a mission to create the shop every enthusiast wishes existed. What started in 2017 as a passion project has grown into one of the West Coast's premier performance destinations — a 5,000 sq ft, 10-bay facility in Thousand Oaks, California serving McLaren, Mustang, and Corvette owners.

Charles is the West Coast's only Thorney Motorsport Independent Certified Technician — a credential earned by traveling to the UK to train at Thorney Motorsport's headquarters near Silverstone Circuit. This partnership makes FFP the go-to independent specialist for McLaren owners seeking factory-level expertise without dealer prices.

Beyond wrenching, Charles brings 19 years of automotive digital media marketing experience to FFP, building a brand that has generated over $12 million in revenue through strategic e-commerce development, PPC advertising, and influencer partnerships. The team's expertise in high-performance road racing and drifting — combined with Charles's formal high-performance driving education — ensures every product is rigorously tested on the street, on the dyno, and on the track before it reaches a customer.

This isn't just a business — it's a lifelong passion ignited in childhood. Today, that passion drives every decision at FFP, from the parts we stock to the services we offer. Whether it's a weekend track warrior or a daily-driven McLaren, every vehicle gets the same attention to detail.

We build the shop we always wished existed — one where enthusiasts can trust they're getting honest advice, quality parts, and work done by people who genuinely love cars as much as they do.

DRIVING EXCELLENCE

Co-Owner Will Waesche 02

WILL WAESCHE

Managing Partner • Co-Owner

Will Waesche brings deep automotive passion and business acumen to Function Factory Performance as Managing Partner and Co-Owner. His hands-on approach to testing and development ensures every product FFP stocks meets the highest standards of quality and performance.

A true enthusiast at heart, Will daily-tests parts and products on his personal fleet including a BMW G82 M4 and Lamborghini vehicles. This real-world validation process means customers can trust that FFP's recommendations come from genuine experience, not just spec sheets.

Will's commitment to the enthusiast community extends beyond just selling parts — he believes in building relationships with customers and helping them achieve their automotive goals, whether that's a subtle upgrade or a full build.

MEET THE CREW

05 McLaren Division Oslin Hernandez

OSLIN HERNANDEZ

High Performance Technician • McLaren Trained

Oslin Hernandez is a hands-on automotive builder shaped by real-world experience across a wide range of platforms — from raw American muscle to precision-engineered McLarens. Grounded in motorsports culture and driven by curiosity, his work reflects a balance of mechanical understanding, visual intention, and respect for craftsmanship.

With experience spanning high-displacement builds and exotic supercars, Oslin has developed a versatile skill set and a sharp eye for detail. Whether diagnosing complex systems, refining suspension setups, or bringing a cohesive vision to a build, his approach is methodical, honest, and purpose-driven.

Influenced by drift culture, track environments, and street performance, his background crosses Japanese, European, and American automotive worlds — allowing him to adapt quickly and perform at a high level in fast-paced shop and motorsports environments.

"Methodical. Honest. Purpose-driven."
06 McLaren Division Reggie Rodgers

REGGIE RODGERS

McLaren Sales Specialist

Reggie leads FFP's McLaren acquisition and sales efforts, helping clients find their perfect supercar. His deep knowledge of the McLaren lineup and market expertise ensures clients get the best value and the right vehicle for their needs.

From 570S to 765LT, Reggie guides customers through the entire acquisition process with transparency and enthusiasm.

07 Operations Ethan Long

ETHAN LONG

Product Manager • Culture Curator • Surfer

Ethan Long has been immersed in car culture from an early age — attending car meets as young as five years old and growing up surrounded by the sights, sounds, and personalities that define the automotive world. That early exposure shaped a lifelong passion for performance cars, design, and the culture that exists around truly well-built machines.

Over time, Ethan developed a sharp eye for detail and a deep appreciation for craftsmanship — from clean street builds to high-end performance platforms. His interest in cars goes beyond horsepower, rooted instead in authenticity, fitment, and the stories behind each build.

Outside of the automotive space, Ethan is an avid surfer, drawn to the same sense of freedom, flow, and progression that fuels his passion for cars. His influence can be felt throughout the FFP ecosystem — in the details behind the scenes, the products you see, and the builds that continue to define the brand's forward momentum.

"Authenticity. Fitment. The story behind each build."
08 HR & Development Exel Caraballo Jr

EXEL CARABALLO JR

HR Manager • UTI Graduate • Sim Racer

Exel Caraballo Jr. is a Puerto Rican Jersey kid who grew up surrounded by Foxbody GTs — his mom, dad, and uncles all had them, so turning wrenches became family tradition before he could drive. He graduated from Universal Technical Institute with training in Automotive, Diesel, and the Ford FACT program, and he's been hands-on with these cars his entire life.

Today, Exel is building and tracking a fully prepped 2021 Mustang GT, chasing clean performance and real reliability. That same obsession follows him off the track — when he's not working or spending time with family, you'll find him sim racing and streaming live in the Ford Mustang GT3 on iRacing.

He believes in doing it right the first time, learning by getting your hands dirty, and earning speed through smart choices. Next up: Competition license in 2027, with a goal to go full-time racing with NASA or SCCA starting in 2028.

"20+ years automotive. UTI certified. Sim racer & mentor."
09 Sales Isaiah Slucher

ISAIAH SLUCHER

High Performance Sales Specialist • F1 Devotee • Student of the Craft

Isaiah Slucher's love for cars started at 11 years old after seeing his classmate's dad pull up in a Porsche 911 GTS. Something about it instantly hooked him — the sound, the speed, the way it carried itself. From that moment, cars became everything.

He spent hours watching car videos on YouTube, learning everything he could, and working in the garage with his dad doing oil changes, swapping tires, replacing belts, and tackling coolant systems. Those early hands-on experiences taught him that cars aren't just about going fast — they're about understanding how everything works together. Add in a steady diet of Formula 1, and Isaiah fell in love with performance, competition, and pushing machines to their limits.

That passion deepened in 2021 when a close friend — Charles — pulled him deeper into the world of high-performance sports cars and exotics. The first time he saw a McLaren roll through the garage, he knew: I need to be around this. What started as curiosity turned into a close friendship and a relentless drive to keep learning and leveling up.

Joining Function Factory Performance is the natural next step — a place to grow, refine his skills, and be surrounded by people who share the same enthusiasm, drive, and respect for the craft.

"Understanding how everything works together — that's the real game."

WANT TO JOIN THE CREW?

We're always looking for passionate automotive enthusiasts to join our team. If you live and breathe cars, we want to hear from you.

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