Polar Bottle Surge Cap Colour:Charcoal If you were changing outer

If you were changing outer ring size - you need to also adjust front dérailleur

Comfort padding from a single piece

It offers optimal flexibility for your bike

Tripeak #6801 High Precision Steel Bearing (ABEC5) (12x21x5mm)

Interchangeable Compounds

Polar Bottle Surge Cap Colour:Charcoal If you were changing outerProduct Description This innovative, high flow valve self seals to eliminate spill and spatter even on your bumpiest rides. It's spill proof when open and pushes closed for a leakproof transport. Provides a sip or blast of water and features a removable nozzle for easy cleaning. Fits all newer model 12oz, 20oz, 24oz Polar Bottle brand water bottles. Sizing Information Size Std. Country of Origin USA