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SIGMA Spare STS holder for BC 1909, 2209, ROX 00419 computers - Products | SLOGER - importer of Rock Machine, Lezyne, Sigma Sport, Alpina and others
SIGMA Chest strap STS DIGITAL for BC 1909, 2209, ROX, without sensor 20315 - Products | SLOGER - importer of Rock Machine, Lezyne, Sigma Sport, Alpina and others
Sigma Sport BC 1909 Bike Computer Review & Description - YouTube
Sigma Sport STS Wireless Cadence Sensor Upgrade Set for TOPLINE 2009/2012 and ROX 5.0/6.0/8.1/9.1
Sigma Sport BC 1909 STS 3X Wireless Speed Cadence HR | #171203088