GIANT MOUNTAIN BIKE OVERDRIVE HEADSET 1 1/8" TO 1 /12"

FITS MODELS;
- All Giant mountain bikes with Overdrive headtubes, 1 1/8" to 1 1/2" diameter
UPPER BEARING ACB 36° X 45° 873# 41.0mm ø
LOWER BEARING 1.5" ACB 36° X 45° 073# 51.8mm ø

GIANT PART NUMBER: 490901

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