Crew Bike Co. CB29 Core BMX BikeCrew Bike Co. CB Core 29" Ride Hard. Keep It Core. The CB Core 29" can do it all. Whether youre throwing it up for a wheelie, cruising the city, or linking up with the squad, the CB Core 29" delivers the size, control, and flow you need to keep your ride clean. With a lightweight aluminum frame and durable components, its built to handle miles of rideouts, tricks, and everyday street sessions. Key Features 29 Double Wall Rims Tough enough for