Check the listing for details. SRM Origin Track Replacement Spindle. Condition: New. Listed at 140.00 USD. SRM Origin Track Replacement SpindleOne of the revolutionary things about the SRM Origin power meter is that it’s compatible with various spindle sizes. If you already own the Origin and want to move it to a different bike, the SRM Origin Track Replacement Spindle is the answer!The Origin Replacement Spindle is available in both 24 mm and 30 mm diameters. These different spindle sizes make the Origin compatible with virtually any frame on the market.Please note that the SRM Origin Lock Ring Tool (sold separately) is needed to change the spindle on your Origin. In the BoxSRM Replacement SpindleSpecs24 mmMaterial: SteelSize: 24 mmWeight: 164 grams30 mmMaterial: AluminumSize: 30 mmWeight: 114 grams Please note that the SRM Origin Lock Ring Tool, SRM Origin Lock Ring, and SRM Origin Crank Caps are sold separately. Why Buy from Power Meter City1. We ship fast! All orders ship on the same day your order is placed!2. We are an authorized SRM dealer and this product comes with a full warranty.3. Expert advice and customer service in case you need any help.4. We offer a free, 30-day return policy on new items. About our CompanyAt Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service.We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.