Flat mounts and thru-axles boost stiffness and improve overall handling. Rims Giant SLR-1 Disc Composite WheelSystem (F:42mm, R:42mm). Front Hub Giant SLR-1 Disc WheelSystem, 12mm thru-axle. Rear Hub Giant SLR-1 Disc WheelSystem, 12mm thru-axle.
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