+2,000 Five Star Reviews and Counting
This is a quality axle that works great! We’re very satisfied with it. This company is great with awesome customer service – with my order I asked them to include a drawing of a dinosaur riding a bicycle, and the CEO drew the cutest dino on a bike! I was so excited to open my package and see the drawing!
I recently purchased an axle for my BOB trailer and couldn’t be happier. From the axle finder tool through to the fast processing and shipment of my order, and even the installation how-to video, everything with the process was smooth and easy. The axle fits perfectly and installation was a snap. I would (and will) wholeheartedly recommend the Robert Axle Project to anyone looking for a thru-axle trailer mount.
This axle worked great so I can now pull my twins in our chariot on my mountain bike. Easy instructions, great website. Thanks!
I ordered from Canada and my thru axle was shipped and delivered in only 2 days! The axle finder was really helpful to find the right size I needed and was the only website that supplied the size I needed for my bike. The thru axle fit perfectly into my bike and I can’t wait to use my road bike for training on my trainer!
12mm and 15mm Thru Axles
Made in collaboration with Chris King Precision Components and machined to match the shape of their iconic headset caps these refined and gorgeous axles are the perfect piece to cap off your dream build.
Available in 3 colors; Black, 3D-Violet, and Matte Turquoise, and 10 of the most common axle sizes available.
Precision Thru Axles Designed and Made To Fit YOUR BIKE and YOUR NEEDS.
Thru Axles for Bikes
12mm and 15mm Thru Axles
The Robert Axle Project makes thru axles for bikes. Replace your stock axle with a lightweight Lightning Bolt-On Axle or tow your kids with our Kid Trailer Axle. Our products allow cycling families, adventurers, commuters and enthusiasts to enjoy traveling by bicycle without leaving their cargo behind.
With our thru axles, you can lighten up your bike or attach your favorite bike trailer. We have thru axles for Burley Trailers, Thule Trailers, BOB Trailers and more—to any bicycle that has a 12mm thru axle. Find a thru-axle for any mountain, fat, road, cross, and electric bikes.
Your Best Bike. Your Best Adventure.
We Are the Bike Thru Axle Experts
We understand that there are two priorities for you. Our product must provide a seamless fit between you and your beloved bike and your precious cargo. And it must be durable and secure to bring you home from your adventures, whether around town or around the world. Each axle is specifically engineered and produced to provide a safe and secure connection.
Designed, tested and made in Bend, Oregon, USA.
Our trainer side adapter is firmly held in place making it easier to attach and remove your bike from the trainer.
Designed to support and protect your bike the same way a thru axle does so there is no undue stress applied to your frame