Engine family SAPXC.169MC1

What this record says

Sold in the US by

Apex Motosports Inc

Engine built by

Yongkang Jiayue Industry Co., Ltd.

Vehicle category

Highway Motorcycle - Ib (50-169cc)

Certificate numbers

SAPXC.169MC1-001

What the number itself says

Reading SAPXC.169MC1 left to right: S is the model-year letter for 2025, APX is the three-character code the EPA assigned to Apex Motosports as certificate holder, C marks a highway (street-legal) certification, .169 is the displacement in litres, so 169cc and MC1 is Apex Motosports' 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 Apex Motosports submitted for this family (model RDV200) carried engine code 1P61QMK. In the Chinese engine-model convention that reads as one cylinder, horizontal (flat) cylinder, with a nominal 61 mm bore, QMK series.

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 10.3 kW (about 14 hp) at 7,500 rpm, driving through a CVT (belt and variator).

Engine code on test vehicle

1P61QMK

Nominal bore (from the code)

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

10.3 kW (≈14 hp)

Rated speed

7,500 rpm

Transmission

CVT (belt and variator)

Sales area

50S

Vehicle built by

Yongkang Eagle Motor Co., LTD.

Test vehicle model

RDV200

Filing history and where it was sold

Apex Motosports filed one certificate under this family, for model year 2025, sold as 50-state, California included.

The vehicle itself is recorded as built by the same company, Yongkang Eagle Motor Co., LTD. in China — engine and chassis from one source.

Certified emission levels: CO 5.0, HC 0.7 g/km.

Other records carrying the same engine code

Apex Motosports certified an engine with this code under one other family number — the same engine filed again in another year, or in an off-road and a street version:

• TAPXC.169MC1 (2026)

Other certificate holders whose test vehicle carried the same engine code (10 of 20 shown):

• Gst Motor LLCTGSTC.169MCA2026 · different engine factory
• Gst Motor LLCSGSTC.169MCA2025 · different engine factory
• Gst Motor LLCRGSTC.169MCA2024 · different engine factory
• Jymoto Enterprises Inc.TJYMC.169DP12026 · different engine factory
• Jymoto Enterprises Inc.TJYMC.169ZPG2026 · different engine factory
• Jymoto Enterprises Inc.SJYMC.169DP12025 · different engine factory
• Jymoto Enterprises Inc.SJYMC.169ZPG2025 · different engine factory
• Jymoto Enterprises Inc.RJYMC.169ZPG2024 · different engine factory
• Lil Pick Up Inc.FLLPX.169AAA2015 · different engine factory
• Pacific Rim International West, Inc.RHALC.169GSE2024 · different engine factory

A shared code from the same factory is a strong search lead. From a different factory it is as often a naming coincidence. Either way it narrows the search; it does not settle it — measure before you buy.

Models certified under SAPXC.169MC1

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.

ADVENTURE · AREA · BOOMER · BWS PLUS · BWS PLUS 150 · CROSS · DEVELERY · F1 · F1 150 · JIGGER · MARAUDER 150 · MARAUDER 200 · REVENGE · ROMA · ROSSI RS · SNOW · VALIANT 150 · VALIANT 200 · WARRIOR · WILLY · X-TREMOR