Topeak Tri-Backup Pro V Apollo 5 has been optimized for

5 has been optimized for road tubeless performance and features a hookless bead design that allows for the precise rim dimensions required to achieve the best tubeless performance

11-speed cassette sprocket

Die-cast aluminum alloy

It is easy to mount and offers optimum protection for your bike with a cut specifically adapted to road bikes with drop bars

The Type-3 ROLLER BEARING CLUTCH™ provides quiet

Topeak Tri-Backup Pro V Apollo 5 has been optimized forSaving time wherever possible is important to a triathlete and the Tri Backup Pro V aids by mounting to the V section of your saddle to form a rear saddle hook helping to minimize T1 and T2 times. This sturdy rack also provides multi combo capabilities to customize equipment for any race needs. Specifications MATERIAL Pressed aluminum MOUNT V rail section of saddle Compatible with CrMo, Ti, & Carbon rails HYDRATION CAPACITY One or two bottles (up to