XLAB Aero TT Water Bottle and Cage System: Stealth Black Cage and Bottle ModelNumber=27746 Front tire is 406 ISO

Front tire is 406 ISO rear is 387 ISO - Rear will NOT fit standard 20` rims

Professional quality component hex driver precisely machined to exact standards to ensure a perfect fit on compatible component fasteners

} CNC-machined aluminium barrel and piston

}RaceFace ARC 25 Rim - 29" Disc Black 28H Offset

Gore Tex product: lightweight extremely breathable durably waterproof and windproof

XLAB Aero TT Water Bottle and Cage System: Stealth Black Cage and Bottle ModelNumber=27746 Front tire is 406 ISOThe Aero TT System offers 50% less drag than round bottles saving up to one minute in an Ironman and up to 20 seconds off of a 40km TT Tri. 20oz BPA free water bottle with easy grip texture and groove Bottle is held securely by the Hi Grip XLAB Carbon Cage Total System Weight: 121g Color Black Bottle Type Standard Access Style Top Mount Type Bolt On Material Carbon Defined Color Black Includes Cage True