US importer / certificate holder
Who actually makes Monster Moto, LLC?
Across every model year on record (2014–2019), Monster Moto, LLC engines were built by Lifan.
- Model years
- 2014–2019
- Engine factories
- 1
- Engine families
- 13
- Models certified
- 29
What the Monster Moto filings say about the engines
Every Monster Moto filing on record is carburetted — 27 certificate rows, 2014 to 2019, and not one fuel-injected engine among them.
The engine codes on Monster Moto's test vehicles —4 distinct across the filings — are led by 152F-3, 154F-3, LF170F-T and 168F-2. The code is stamped on the crankcase and is a better search term than the badge.
13 of the 27 filings are 50-state (California-legal); the other 14 were 49-state only.
Rated power across the range runs from 1.1 kW to 4.6 kW (about 1 to 6 hp).
The vehicle builders named are Monster Moto, LLC, Wuhu Fourstar Machinery Share Co., Ltd., Wuhu Fourstar Sports Share Co., Ltd. and Yongkang Fourstar Co., Ltd. and others — the chassis and the engine do not always share a source.
Each figure is read straight off the EPA certificate rows; the per-family pages below carry the full breakdown for every engine family.
The factory
Lifan
Also builds engines for 24 other American brands. See the full list
Other American badges on the same engines
These machines came out of the same factory at the same engine size. If Monster Moto, LLC parts are hard to find, these are where to look next — after measuring.
Model names certified under Monster Moto, LLC
29 distinct model designations appear on this brand's certificates. Yours should be among them — importers sometimes market a machine under a different name than the one they certified.
MM-B105 · MM-B200 · MM-B200B · MM-B200R · MM-B200RT · MM-B212 · MM-B80 · MM-B80-AF · MM-B80-BR · MM-B80-CM · MM-B80-HD · MM-B80-MG · MM-B80-RT · MM-B80B · MM-B80BCCX · MM-B80BCNX · MM-B80BMX · MM-B80G · MM-B80GCCX · MM-B80GCNX · MM-B80GMX · MM-B80KMO · MM-B80OPS · MM-B80R · MM-B80RCCX · MM-B80RCNX · MM-B80RMX · MM-B80RT · Mega Max
Related in the registry
Source. US EPA annual certification data — EPA Certified Highway Motorcycle Test Results, MY2006-present; EPA Certified Off-Road Motorcycle / ATV / UTV / Rec Vehicle, MY2006-present. Retrieved 2026-09-07. Based on 27 China-engine certificate rows filed by Monster Moto, LLC. Full provenance and method.