The Boyd Centerlock Track hubs represent the newest innovation in track hub technology.
Traditional high flange track hubs allow for increased bracing angles and stronger wheels to meet the demand of diving down the bank of your local velodrome.
Different axle options allow for the wheels to be used on traditional 3/8th inch frames or the newer M9/M10 frames.
For decades, all axle specs were ⅜” for both front and rear axles. Confused as to why every other measurement on the bike was metric except the axle size, modern bikes have adopted an M9 front and M10 rear axle standard. How can you tell if your bike has metric or imperial measurements? A simple way to tell is if your existing wheel axle nuts fit perfectly on both the front and rear axles, then you have ⅜”. If your front axle nuts can not fit on the back then you more than likely have M9 and M10.
It’s important to note that if you are running a ⅜” bike and fork, an M9 front wheel will be loose in your front fork and an M10 rear wheel will not fit in the rear of your fork.
If you are running an M9 / M10 bike and fork, a ⅜” front wheel will not fit in your fork and a ⅜” rear wheel will be loose in the rear of your bike frame.
When you order your wheel or hub configuration you can choose your axle spec (based on your bike) and it will come with the correct size axles and nuts. If you accidentally order the wrong sized axles, it is a fairly simple process to swap out the axles, you do not need to completely rebuild the wheel.
Centerlock Track Cog!
At the heart of these wheels is a clever new hub design – the CL-TK hub uses a centerlock spline and cog for a much simpler and extremely secure interface. Simply slide the cog on the hub, tighten the disc rotor lock ring and you are good to go. Cog changes between events have never been simpler. The flip-flop hubs are also threaded for a standard cog and lockring so you can use your existing collection of cogs.
"We feel the centerlock track cog is a much faster and easier method for a track cog interface. Almost every track rider we have spoken to has accidentally cross-threaded a track hub once resulting in needing a new hub."