We don't sell parts. We tell you what you actually own, and how to check what fits.
Writing
Notes from inside the registry — 4,858 certificates, 325 Chinese factories and 341 American brands. Every figure here comes from the federal data, and anything that could not be verified is left out.
Identification
One character in the engine family code outranks the badge, the speedometer and the seller's word on the question of whether a machine was ever certified for the road. Here is what C and X actually mean, sourced to the regulations behind them and checked against every family in the registry.
· 6 min read
Identification
· 6 min
Sun and pressure washing fade the engine family number long before the rest of the machine ages. How to recover it properly, and what to do when it will not read.
Identification
· 7 min
The title, the sticker and the speedometer can all be wrong about displacement. The crankcase code cannot. How to rank the evidence and settle it without dismantling anything.
Finding parts
· 6 min
The three numbers on a scooter drive belt, which is which, and how to recover all three from a belt whose printing has polished away.
Identification
· 6 min
Four facts are encoded in the code on your emission label: model year, importer, road or off-road, and engine size. Here is how to read each one.
The industry
· 7 min
One factory supplies 55 American brands. Nine more supply another 145 between them. The federal record, ranked.
Identification
· 7 min
TaoTao USA certified 109 machines across ten model years using two different Chinese factories. Which one built yours depends on the year.
The industry
· 8 min
Seventeen American brands sold 150cc machines built by one Chinese factory. How badge-engineering works in powersports, and what it means when you need a part.
Finding parts
· 9 min
The importer folded, the website is gone and nobody sells the part. The factory that built your engine is usually still trading — and still supplying other American brands.
Every post here is built on the same two public datasets as the rest of the site, and the numbers in them can be checked against the pages they describe. Where something could not be verified from the record or a citable source, it is either said to be unverified or left out entirely.
No post will tell you a part fits. That is the one thing this site refuses to do, and it applies to the writing as much as to the data pages.