I can't vouch for this specific product, but axle extenders along these lines are pretty widely available:
https://www.ebay.co.uk/i/164122490251?chn=ps&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&itemid=164122490251&targetid=878706529565&device=c&mktype=pla&googleloc=1006835&poi=&campaignid=9794911332&mkgroupid=101625063524&rlsatarget=pla-878706529565&abcId=1139126&merchantid=6995734&gclid=EAIaIQobChMI99ThlZrl6AIVAeztCh1m9gFmEAQYBSABEgLwqvD_BwE
Yeah. I saw that Specialized used to sell something similar but had to recall them so I'm less keen on that option.
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I can't vouch for this specific product, but axle extenders along these lines are pretty widely available:
https://www.ebay.co.uk/i/164122490251?chn=ps&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&itemid=164122490251&targetid=878706529565&device=c&mktype=pla&googleloc=1006835&poi=&campaignid=9794911332&mkgroupid=101625063524&rlsatarget=pla-878706529565&abcId=1139126&merchantid=6995734&gclid=EAIaIQobChMI99ThlZrl6AIVAeztCh1m9gFmEAQYBSABEgLwqvD_BwE