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The G5 now uses a tapered and oversized 1 1/8"-to-1 1/2" head tube.

The G5 now uses a tapered and oversized 1 1/8"-to-1 1/2" head tube.

The G5 now uses a tapered and oversized 1 1/8"-to-1 1/2" head tube.

Photo: © BH Bikes