Corazzo offers vegan motorcycle jackets and gloves. See www.corazzo.net and search with the word vegan
Motoport offers a non-leather racing glove. The entire glove is made from their Racing Grade Stretch Material Made with Dupont™ Kevlar® Fiber. (No Leather Used On the Entire Glove!) This is the only synthetic material approved for road racing suits. See: https://www.motoport.com/product/motoport-racing-glove/
Olympia Gloves offers several varieties of vegan motorcycle gloves here: shop.olympiagloves.com/collections/vegan-motorcycle-gloves