Engine family TBYMC.271MCE

What this record says

Sold in the US by

Benyate Motorsport LLC

Engine built by

Chongqing Zongshen

Vehicle category

Highway Motorcycle - II (170-279cc)

Certificate numbers

TBYMC.271MCE-006

What the number itself says

Reading TBYMC.271MCE left to right: T is the model-year letter for 2026, BYM is the three-character code the EPA assigned to Benyate Motorsport as certificate holder, C marks a highway (street-legal) certification, .271 is the displacement in litres, so 271cc and MCE is Benyate Motorsport's own sequence for that year. Nothing in the number names the factory — that comes from the certificate itself.

The engine, as described on the certificate

The test vehicle Benyate Motorsport submitted for this family (model FY300-5) carried engine code 175FMN. In the Chinese engine-model convention that reads as one cylinder with a nominal 75 mm bore, FMN series. Against the certified 271cc that implies a stroke of roughly 61 mm — a sanity check for a piston or cylinder listing, not a published figure.

The certificate describes a four-stroke, single-cylinder engine with 2 valves per cylinder fed by throttle-body fuel injection, with an oxygen sensor for closed-loop fuelling, run by an engine control module (ECM). No catalytic converter is listed.

Rated power on the record is 16 kW (about 21 hp) at 8,500 rpm, driving through a 6-speed manual gearbox.

Engine code on test vehicle

175FMN

Nominal bore (from the code)

75 mm · implied stroke ≈ 61 mm

Cylinders / valves

1 · 2 per cylinder

Cycle

four-stroke

Fuel delivery

throttle-body fuel injection

Oxygen sensor

yes (closed loop)

Engine control

ECM

Catalytic converter

none listed

Rated power

16 kW (≈21 hp)

Rated speed

8,500 rpm

Transmission

6-speed manual gearbox

Sales area

50S

Vehicle built by

Taizhou Qianxin Vehicle Co,.Ltd

Test vehicle model

FY300-5

Filing history and where it was sold

Benyate Motorsport filed one certificate under this family, for model year 2026, sold as 50-state, California included.

The vehicle itself is recorded as built by Taizhou Qianxin Vehicle Co,.Ltd in China, while the engine came from Chongqing Zongshen. Chassis parts and engine parts therefore have different origins.

Certified emission levels: CO 5.9, HC 0.5 g/km.

Models certified under TBYMC.271MCE

Every model designation the importer listed on this certificate. If your machine's model name appears here, this is the right record — even if the name on the bodywork is slightly different.

BOXER · BULL · COUGAR · CRASHER · CRUSER · FIGHTER · GTS · GTX · Hunter · MAX · NEXUS · RIDER · Raptor · Rux · TITAN · VECTOR · VENZA · X-MAX

Other American badges on engines from the same factory

• Chongqing Zongshen · 200cc9 American brands · 2007–2026
• Chongqing Zongshen · 250cc4 American brands · 2008–2026