Designed specifically for TiCycletubes XL length thin walled and Paragon Machine Works 44mm head tubes, the brass heat sink can be quickly transferred from top tube to down tube end of the head tube during front triangle assembly. Works for 100mm T47 bottom bracket shells too!

• compatible with 44mm - 48mm ID head tubes and bottom bracket shells, the brass inset is a press fit onto the head tube and expands into place.

• compatible with 100-250mm length tubes.

• compatible with standard purge fittings, 1/4” NPT thread.

• 100% made in USA.

• Images are representative of the actual heatsink, these are hand made and may be slight differences in appearance but all will function as described.