The bike aftermarket is a genuinely large business covering both bicycles and motorcycles. Parts, accessories, upgrades, servicing, and a used market with real depth. Riders in both worlds modify continuously and spend accordingly.
Aftermarket is the trade’s own word, carrying the full infrastructure: parts suppliers, dealers, workshops, and the distinction between original equipment and everything else. It’s precise in a way that “bike parts” isn’t.
The name fits a parts retailer, a marketplace, a compatibility and fitment database, a workshop directory, or a trade publication. The fitment database reading is the most useful and the most defensible: knowing which part fits which model is a genuinely hard data problem that customers struggle with constantly.
Two words, fifteen characters, no hyphen, .com, and both are standard vocabulary in the trade.
Offers considered.