Grammo Factor 5:0TT Wheelset The Grammo Factor is a rarity in the world of full carbon wheels â it enjoys the distinction of being truable and having replaceable rim and spokes. The direct pull spokes come from the oversized hub as 4.5mm round but quickly flatten, reaching 25mm by 3mm blades at the rim. The rimward end of the spoke moves through the air much faster than the hub end so this tapered blading offers the best balance between aerodymanic slipperiness and crosswind performance. The Grammo 50mm full carbon tubular rim has a coated brake track for consistent braking performance and has proven itself in our 50T wheel. - Weight rear: 1020g
- Weight front: 770g
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