Replacement Headset bearings to fit Giant OD Mountain Bike headsets Not Giant OD2 Mountain bike Headset Compatible with all 2015 - 2018 models Replaces Original GCR15 high carbon chromium bearings steel is standard material for precision C3 bearings H62 copper sheet or 08F cold rolled steel belt. NitrileRust Resistance under normal operating conditions for six months then relube if necessary. Bearings are supplied with low noise bearing grease thickened by lithium and calcium 12 - hydroxystearate,, made from deeply refined mineral oil with rust inhibitors and anti oxidants.
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41 OD x 30.15 ID x 6.5H 36° 45° (TH873e MR054). 51.8 OD x 40 ID x 8H x 36° 45° (TH073). If you are not sure if this is the kit for you.
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Suits bikes with a tapered head tube and steerer tube Tapers from 1 1/4" to 1 1/2" (1.25" - 1.50") Sealed top and bottom bearings Giant Product Code: 491200. Giant Product Code: 491200. Tapers from 1 1/4" to 1 1/2" (1.25" - 1.50").
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1x ACB518K. Suitable for GIANT OVERDRIVE. 1x MH-P03K.
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41 OD x 30.15 ID x 6.5H 36° 45° (TH873e MR054). 51.8 OD x 40 ID x 8H x 36° 45° (TH073). If you are not sure if this is the kit for you.
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Upper bearing outside diameter 41.8 mm (for 1-1/8" steerer tube), lower bearing outside diameter 46.8 mm (for steerer tube tapering out to 1-1/4"). Bearings run smoothly and have lots of mileage left. Sale includes upper bearing, lower bearing and compression ring.
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BENEFIT: Compared to the already stiff OverDrive system, OverDrive 2 provides up to 30 percent more torsional steering stiffness. This translates into industry-leading steering precision. OVERDRIVE 2.
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Won't fit OverDrive 2. Lower headset bearing: 30x41.8x6.5. Upper Headset bearing: 34x46.9x7. Bearing Race Material: P6 bearing steel. Bearing Ball Material: P6 bearing steel. Bearing Ball Material:Nitrided Silicon Ceramic SI3N4.
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