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Hydration bite-valve kit designed specifically for the Stilo ST4 and ST5 helmet.
If you wear it to protect yourself while racing, the DiscoveryParts.com Driver Gear collection is where you'll find it!
Keep your team safe, prepared, and ready to go with the latest crew gear. Because no matter how many laps you have, how light your helmet is, what your last dyno number is, if your team does not get you to the line on time, you can not win.
If you mount it on or install it in your vehicle for track days or wheel-to-wheel racing, the DiscoveryParts Racecar Gear collection is where you'll find it!
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