Sigma's replacement spoke magnet fits standard spokes and works with Sigma speed sensors.
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RUSSELL'S CYCLING & FITNESS CENTER
10 Valley Forge Plz, Washington, Illinois 61571 (map)
Phone: (309) 444-2098 | Email
Hours: Mon-Thurs 9am-6pm, Fri 9am-8pm, Sat 9am-4pm, Closed Sun