About Us
Precision. Performance. Proven.
At Simon Motorsports, Harley-Davidson transmissions aren’t just another product we sell—they’re our passion, our profession, and the foundation of everything we’ve built for more than three decades.
Founded by father-and-son team Andy Simon Sr. and Andy Simon Jr., Simon Motorsports has earned a reputation for building some of the finest Harley-Davidson transmissions available. From everyday street motorcycles to championship-winning drag bikes, our mission has always been the same: deliver uncompromising quality, exceptional craftsmanship, and proven performance. Located in Mocksville, North Carolina, we proudly serve customers throughout the United States and around the world. Every transmission, billet component, and service that leaves our shop reflects decades of hands-on experience, precision machining, and an unwavering commitment to excellence.
Built From Experience—Not Theory
There is no substitute for real-world experience.
For over 34 years, we’ve been developing, testing, and refining Harley-Davidson transmissions under the most demanding conditions imaginable. Our knowledge wasn’t learned from books—it was earned one pass at a time on the racetrack.
Our engineering and machining techniques have been proven on the world’s quickest and fastest Harley-Davidson FLH Bagger, becoming the first Harley-Davidson FLH Bagger to break into the 7-second quarter mile, with a best performance of 7.39 seconds at 199.49 MPH. Every lesson learned at nearly 200 MPH is carried directly into the products we build for our customers. Whether you’re riding across town, crossing the country, or launching off the starting line, you benefit from technology and experience that has been tested where failure is simply not an option.
More Than Just Racing
While our racing accomplishments have helped establish our reputation, the vast majority of our customers are everyday riders.
Many people believe transmission modifications are only beneficial for high-horsepower race bikes. We know that’s simply not true. Our back-cut transmission services improve shift quality, increase gear engagement, and create smoother, more positive shifting for virtually every Harley-Davidson rider. Whether your motorcycle is completely stock, mildly modified, or producing extreme horsepower, we build every transmission with the same level of precision and attention to detail.
Our goal is simple: make every ride better.
American-Made Quality
We believe quality begins with the materials we use.
Our billet components are proudly manufactured in the USA using premium materials and precision CNC machining. Every transmission is carefully inspected, measured, assembled, and set up to Simon Motorsports specifications before it leaves our facility. We never cut corners because we know our customers depend on our products every time they ride.
Why Riders Choose Simon Motorsports...
When you trust Simon Motorsports with your transmission, you’re choosing a company built on experience, integrity, and results.
Our customers know they can expect:
● Over 34 years of Harley-Davidson transmission expertise
● Products designed, manufactured, and assembled in the USA
● Precision workmanship and meticulous quality control
● Fast turnaround times
● Worldwide shipping
● Friendly, knowledgeable customer support
● Proven performance on both the street and the racetrack
Our Commitment
Every customer deserves the same level of care, whether they’re building a record-setting race motorcycle or simply looking for smoother shifting on their weekend cruiser.
That’s why every transmission receives the same attention to detail we put into our own motorcycles.
We’re proud of the reputation we’ve built, and we work hard every day to earn it again with every transmission we service and every customer we help.
Thank you for considering Simon Motorsports.
We look forward to earning your trust and helping you build a Harley-Davidson transmission that performs exactly the way it should—smoothly, reliably, and with the confidence that comes from decades of proven experience.