Low profile. Massively ventilated. Exceptionally aerodynamic. Oracle is a pro-caliber road helmet for riders who won't settle for anything but the best. Featuring an in-molded carbon fiber skeleton that provides the superior structural integrity and load dispersal necessary to create the biggest possible vents in the lowest-profile design, Oracle uses internal channeling and CFD-optimized ventilation to maximize airflow efficiency through the helmet and over the head, for impressive levels of cooling and drag reduction.

Efficiency. It's the name of the game in triathlon, whether it's an Ironman event or a sprint-distance race. And efficiency is what the RXL Hilo is all about. From its quick-entry heel loop and large no pull-thru top strap to its efficient Silver Series Carbon sole and performance-proven inForm Pro last, every detail of the Hilo's ultra-lightweight design is there to help you save precious energy for the run. Look out PR, here you come.

For the rider looking for every speed advantage possible, Bontrager's Speed Bottle with Carbon Cage is simply the fastest bottle and cage combination on the planet. Developed using Computer Fluid Dynamics to slice through the wind, in certain cross wind situations using this bottle and cage combination is actually faster than using no bottle at all.

Take some of the chore out of pumping your tires with Bontrager's Supercharger. Packed with convenient features like a soft, co-molded handle, a raised gauge to eliminate eye strain, and a built-in locking feature that holds the handle securely during transport or storage, the Supercharge features a durable aluminum barrel and a large, stable base designed to minimize tipping. And thanks to its dual head design, you're ready for both Presta and Schrader valves.

Never lose a bottle again, thanks to Bontrager's problem solving Race Lite Rear Cage Holder. Designed to hold one or two bottles, the Rear Cage Holder offers multiple angle adjustments and high/low positioning that let's you dial-in just the right position for easy bottle access. Includes two Race Lite Rear Cages.

Keep your race-day nutritional supplements close at hand with Bontrager's Speed Box. Designed to hold your gels, chewables, bars, and other on-the-go energy products, the Speed Box mounts to your top tube quickly, securely, and aerodynamically behind your stem. Available in two sizes, the Speed Box features an easy-to-open mesh top that provides quick access to your supplements while also keeping them securely inside.

At just 24g, the light and small Air Rush Regulator is the ideal compact solution for your on-the-go inflation needs. Featuring a simple and effective regulator value that lets you easily control the fill rate, the Air Rush Regulator also includes a cartridge insulator to help protect your hands from cold cartridges. Designed for use with Bontrager CO2 cartridges.

RXL Hilo is focused on getting triathletes to the run fresher and faster by helping them save both precious time and precious energy.

Discover Oracle. Massively ventilated, carbon fiber-reinforced protection for your head.

Measure the circumference of your head using a cloth tape measure or a piece of string and a ruler. Use the chart below to find the proper helmet size based on your measurement.

¹ Head

Take your measurement horizontally across your brow and over your ears.

If for any reason you’re not satisfied with the comfort of your Bontrager saddle, shoes, or technical apparel, return the item(s)—along with the original sales receipt—to the place of purchase within 30 days of purchase date for exchange or store credit.