Meet the ZTR Alpha 400; a rim that shares the same dimensions and patented Bead Socket Technology as the Alpha 340 but adds a triple channel internal arch design that makes this rim nearly indestructible. The ZTR Alpha 400 also offers a 33% thicker spoke bed than the original Alpha 340 rim for maximum durability. When combined with road tubeless tyres, the Alpha offers a ride normally only found with tubular tyres and rims, but maintains the simplicity and low maintenance of a clincher.