Vitus 979 was gifted to me,need to replace this part.

I don’t see anything broken in the photo, but that’s a clamp-on front derailleur.

Edit: NVM I see where it broke. Yeah, you need a new derailleur. Not sure if you’ll be able to find a mavic one but a bike shop should be able to help you find a compatible one

Ebay is your friend (just a handful)

Check the dimensions:

[Vintage NOS Mavic front derailleur clamp | eBay](https://www.ebay.com/itm/126173899207?_skw=mavic+front+derailleur&itmmeta=01KK5X1QP47E6Q80BE780HG4JY&hash=item1d608ce9c7:g:11IAAOSwEp5cVnII&itmprp=enc%3AAQALAAAA0GfYFPkwiKCW4ZNSs2u11xAZtdxHJOIIQ2YCU%2BS5JuZGKJIULiot5SLQd4Z08UYfX31l6iectAcaC28JS2nTbH1mUgneJWzi9OIytPnCHKnrPQemYDC991m5zoi5mHXhruwBtFq5kF4E9%2FGoyZEcrX0p1b8HEiGTc3YACN1U%2FUDJnQ8PhVubDDXOByNFdCtkUrwGZ9qCaXZs81gl9B23WdhAdKeNWNPuCA59yLh0YD%2BlcQRnNxHAj8iCXyTebDUJj3gCYeVxUFgNjHGFP1iZQbw%3D%7Ctkp%3ABk9SR5z7hr2ZZw)

[MAVIC FRONT DERAILLEUR CLAMP BAND – NEW OLD STOCK SPARE PART – 810 860 870 ETC | eBay](https://www.ebay.com/itm/389621438567?_trkparms=itmf%3D1%26aid%3D1110018%26rkt%3D12%26asc%3D20201210111451%26mech%3D1%26algv%3DCompVIDesktopATF2V6ReplaceKnnV4WithVectorDbNsOptHotPlRecallWithSiblingFilterCpcRecallsWithCiiEmbedding%26pmt%3D1%26amclksrc%3DITM%26sd%3D126173899207%26sid%3DAQALAAAAEFDnB1KRYD5ekMyvuKqR5z4%3D%26itm%3D389621438567%26noa%3D0%26plcampt%3D0%3A160687563012%26algo%3DHOMESPLICE.COMPLISTINGS%26ao%3D1%26rk%3D2%26pid%3D101196%26b%3D1%26mehot%3Dnone%26lsid%3D3%26meid%3D74badb5fbcf04aae81d648b6f5618763%26pg%3D2332490&_trksid=p2332490.c101196.m2219&itmprp=cksum%3A38962143856774badb5fbcf04aae81d648b6f5618763%7Cenc%3AAQALAAABUIb8%252Bnw9QAUolhHDXApmUIcnACLcaXnbbtRIU7wxltrLMJnHGCRtGe6icNADH%252Fr4raa64AwFPIg8EGMKA8HABkcaamgxVzRjEFdYdxL3RHjdWTYRHyjvUUvtqqN0%252FvWcKVtFONjN6dctsG1JZzCvirTLwPxZFAMVWmsNGJXIjMMGbpd5NJmu8WKqIb0b%252B1ppBtn%252Fl5GRpLm05Gq58uab82zWVwxn2Wef8bKKjiCRSvf%252BsHp7ut3c6KbMuswJN26wu2flL2xQw8z0YW6IHNwfsPPws6Y1DPn%252ByCV9%252FaNKhBvmS%252FccwESkKoyQWEIk7WnhoUh2ivCPELBAhgrYjuH5RObvrT7o26%252FBt3PKuSjlGI8Q9bnDwmMX%252F0GKvqV7AFRfZq15G6IQS6NK1sJeubVfygoqjW44NLJGzSb3PL0sItyyfcf%252F2OXZIUUr22lVep8Znw%253D%253D%7Campid%3APL_CLK%7Cclp%3A2332490&itmmeta=01KK5X2KZ734SNNVBFT9R4XQCW)

[Mavic front 28-28.6mm clamp-on derailleur | eBay](https://www.ebay.com/itm/335601342623?_skw=mavic+front+derailleur+clamp&itmmeta=01KK5X5HTYA6AYN7EJABKQBZP3&hash=item4e2366189f:g:dVsAAOSw3Idm~cUm&itmprp=enc%3AAQALAAABAGfYFPkwiKCW4ZNSs2u11xASFeoKEtYUSsXO5ptmwJJeqmY1lNMumdZTjrGedTd8FbRPhgmKBcuffDa%2FhHxw4d7qc5EyBLwFkiLemt5%2B4Kr38b6RHTC7IrdW9O3GJ4VJF%2BXh%2BWaEuyp%2F0pskwoYt16i9q2y7g0ZAGhWW3RqKuv6vVQoENZaIpnTZ2lEZI3NLQgzKvcrMErs9KVBbOuQNnksBxV9XyddSwGdh4KjKa3bPb1pkMbEgWIX4pFIk8DlXQz2FA%2Fe8%2Btgs%2BhV4WSxkWMyQ4gyLdVkUCV%2BDDvymWZskQ1wdrcYAHNtssaE8ZIj8bIihFzQ%2BjClt0TCP7zG%2B%2Bmg%3D%7Ctkp%3ABk9SR9Kdlr2ZZw)

[Vintage Mavic SSC Front Derailleur Clamp Bracket Spare Part NOS | eBay](https://www.ebay.com/itm/167829166171?_skw=mavic+front+derailleur+clamp&itmmeta=01KK5X5HV18GTMFY28TA8PMZY4&hash=item271365d85b:g:u0UAAeSwSUFo3SBO&itmprp=enc%3AAQALAAABAGfYFPkwiKCW4ZNSs2u11xAI1ijxUKvKPm9QaW1xEMGDjnCNxRz0qOFfgtTQ4GPDpebybDHqaY5paO8%2FUs4WLSrfTLJ4tEi1xgCnSZakyv6KOjHtjDrf3uCaxVhQu5JlMA7mlWk20hGSZA8IcUZyQJEvtdhavG2dA18upDAYDYOlGjb3tbyF%2F7%2F5WkcYj7edQsbagLpOSZ3HRw5J2%2BI4R1hFGGErfjvlxJuG3gZD7rKxwtkHlJYTvD81jTcJ%2FECjahh4tIn0nSmq2dpRcbFRyzjo6sYa4%2F8XRTOPLvmnsbyLIY3F8osrHGgsfAIptzPBheDVYuZO%2BsDbLWGjtKxpQK4%3D%7Ctkp%3ABk9SR9idlr2ZZw)

[NOS Mavic front derailleur clamp band – Part No. 810 008 with pivot pin | eBay](https://www.ebay.com/itm/156646488492?_skw=mavic+front+derailleur+clamp&itmmeta=01KK5X5HV1JQCM30Q5GDP9H28T&hash=item2478dbb9ac:g:W~wAAOSwEghnjmNh&itmprp=enc%3AAQALAAAA4GfYFPkwiKCW4ZNSs2u11xChTd%2BWfxMr08b292OCbVe9YuOo%2FUr23CppT6cTV43ehjAQrS6L1v6nI8eUJJHYUC4PQpF8gQuzXVrTpZ0bJbVo1LsXqWXzv1%2BGxlQkD8I1XQxu52IwktzZmGwSBDtlPyBZLDaf0Jcv7F512XuFfrhuz8TzavPRysUc9ToAe2btPzanOr4pgKKjFpYdK5KMcu%2F2mWMuKkPcNHplSkpIbhk%2BUqCdh99U%2BqZACMi7P%2FzAt7bU%2BlQDbqQRq2HF9j5bg%2FASXIPqqev95Qy6V4hVyxiN%7Ctkp%3ABk9SR9idlr2ZZw)