Hydrapak Polar Surge Replacement Cap-Silver Color:Silver except XT SM-RT86 and SM-RT76

except XT SM-RT86 and SM-RT76 (as they have an aluminium spider)

Stable Handling: Angular contact design supports radial and axial loads for balanced control

so no start line is beyond its scope

Bracket: SP-15 Seatpost Bracket Compatible with Aero Posts

Hydrapak Polar Surge Replacement Cap-Silver Color:Silver except XT SM-RT86 and SM-RT76Features High flow Surge valve for fast hydration with minimal squeeze. Self sealing design prevents leaks and drips. One handed, spill resistant operation for active use. Removable components for easy cleaning. Specifications Threading: 63mm Compatibility: HydraPak Squeeze & Polar Bottles