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Fitness Hybrid Bike Specialzed Sirrus X 4.0 - 2021, find technical data and specifications online at EurekaBike.com
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Specialized Sirrus X 4.0 A1 SL Premium Future Shock 1.5 Stout Plug + Play Fitness Bike 2021 - YouTube
Helped a great customer with an upgrade last month - traded in his Specialized Sirrus 3.0 to a Sirrus X 4.0 - higher quality drivetrain… | Instagram
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