It's the perfect addition to either your Campy EPS electronic or mechanical shifting groupset! PM9 - This is SRM's newest version of their power meter which offers additional features and functionality including.PM7 - Standard power meter spider version. You may also order the power meter without chainrings and use your own 11- or 12-speed Campy chainrings. You will need the following tools for installation of this product. The SRM Campagnolo Power Meter comes ready for use with 12-speed drivetrains. You can also install 11-speed Campy chainrings on the power meter. Cadence Magnet Kit if PM7 version. Left or Both Legs Measured. Expert advice and customer service in case you need any help. At 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. This item is in the category "Sporting Goods\Cycling\Bicycle Electronics\Power Meters". The seller is "powermetercity" and is located in this country: US. This item can be shipped to United States, China, Canada, United Kingdom, Australia, Japan, Korea, South, Indonesia, South Africa, Thailand, Hong Kong, Bahamas, New Zealand, Singapore, Switzerland, Norway, Saudi Arabia, United Arab Emirates, Qatar, Malaysia, Brazil, Colombia, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Ecuador, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Vietnam, Uruguay.