

From the early days of drag racing to the modern era of 4,000+ horsepower machines, our mission has never changed:
From the early days of drag racing to the modern era of 4,000+ horsepower machines, our mission has never changed:
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At B&J, we don’t just follow trends — we create them. Every product is born from extensive real-world testing, precision engineering, and direct input from the racers who trust us with their success. Our team constantly pushes the boundaries of design, materials, and manufacturing to give our customers the competitive edge they deserve.
We pride ourselves on American craftsmanship, attention to detail, and a commitment to quality that ensures every transmission that leaves our shop meets the highest standards in the industry.
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Great guys there is not much they can't help you out with

Fantastic products great service!

The best place for The best people!

Wander the lineup at the Bonneville Salt Flats, or check out the high-powered machines in tractor pulling and sand drags.
You’ll notice one thing they all have in common:
B&J “Big Boy” Transmissions.
It’s not a coincidence.




Take a walk through the Blown Alcohol or Pro Mod pits at any major event and you’ll find our transmissions in the cars that win. The legendary “Big Boy” transmission is the go-to choice for racers who demand strength, consistency, and results.
Different chassis. Different engines. Different clutches.
B&J Transmissions are built with decades of real-world racing experience, precision engineering, and top-quality materials. Each unit is designed to handle extreme horsepower, reduce maintenance time, and deliver consistent, winning performance — pass after pass.
Every B&J Transmission is proudly designed, engineered, and built in Utah, USA. We’re committed to American craftsmanship and hands-on quality control, ensuring every product meets our exacting performance standards.
Our transmissions are proven in drag racing, land speed racing, tractor pulling, sand drags, and motorcycle racing. Whether you’re competing in Top Alcohol, Nostalgia Funny Car, Pro Mod, or Top Fuel Motorcycle, B&J has a configuration built to perform.
Yes! B&J Transmissions proudly serves racers worldwide. We ship internationally and provide technical support, parts, and service assistance no matter where you’re located — from the U.S. to Europe, Australia, and beyond.
Absolutely. We offer a wide range of gear ratios and custom configurations to match your exact racing needs. Our team will work with you to determine the best setup for your chassis, engine, and performance goals.
You can reach our team directly by phone or email for orders, technical support, or service questions. We take pride in providing personalized customer care — when you call B&J, you’ll talk to someone who knows racing and understands your needs.
Wander the lineup at the Bonneville Salt Flats, or check out the high-powered machines in tractor pulling and sand drags.
You’ll notice one thing they all have in common:
B&J “Big Boy” Transmissions.
It’s not a coincidence.
Great guys there is not much they can't help you out with

Fantastic products great service!

The best place for The best people!









Wander the lineup at the Bonneville Salt Flats, or check out the high-powered machines in tractor pulling and sand drags.
It’s not a coincidence.
B&J Transmissions are built with decades of real-world racing experience, precision engineering, and top-quality materials. Each unit is designed to handle extreme horsepower, reduce maintenance time, and deliver consistent, winning performance — pass after pass.
Every B&J Transmission is proudly designed, engineered, and built in Utah, USA. We’re committed to American craftsmanship and hands-on quality control, ensuring every product meets our exacting performance standards.
Our transmissions are proven in drag racing, land speed racing, tractor pulling, sand drags, and motorcycle racing. Whether you’re competing in Top Alcohol, Nostalgia Funny Car, Pro Mod, or Top Fuel Motorcycle, B&J has a configuration built to perform.
Yes! B&J Transmissions proudly serves racers worldwide. We ship internationally and provide technical support, parts, and service assistance no matter where you’re located — from the U.S. to Europe, Australia, and beyond.
Absolutely. We offer a wide range of gear ratios and custom configurations to match your exact racing needs. Our team will work with you to determine the best setup for your chassis, engine, and performance goals.
You can reach our team directly by phone or email for orders, technical support, or service questions. We take pride in providing personalized customer care — when you call B&J, you’ll talk to someone who knows racing and understands your needs.