The Trek RSL Aero Water Bottle and Cage is designed for the Madone Gen 8 and proven to make your race bike even from other top brands faster. The system is UCI compliant and the cage also holds round bottles making it the ultimate hydration system for your bike.

• Tested 1.8 watts faster at 22 mph on the Madone Gen 8 compared to standard round bottles
• Tested faster on other race bikes in our aerodynamic modeling system
• RSL Aero Bottle Cage securely holds the RSL Aero Water Bottle and standard round water bottles
• UCI compliant to ensure safety at all levels of competition
• RSL Aero Water bottle is USDA approved and free of BPAs and phthalates
• Bottle and cap are dishwasher safe and recyclable
• RSL Aero Bottle Cage is constructed from strong and lightweight OCLV Carbon