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The Park Tool IR-1 Internal Cable Routing Kit lets you take the guesswork out of installing cables, wires, and housing inside the frame so you can leave the string, wire and tape method to the amateurs. The IR-1 speeds the internal frame routing of electric wires, shift cable/housing, brake cable/housing, and hydraulic tubing on carbon fiber, titanium, and aluminum frames.

This kit includes three plastic coated 250cm cables with attached magnets and unique fittings, plus an external guide magnet to speed operation. Opposite polarity magnets on cables seek and attach inside frame tubes, making it easy to route through frame entrances and exits.