BAMX Gasoline Engines: One Engine Programme from 50cc Commuter Units to 250cc Workhorses

For most motorcycle assemblers, the engine is the single component that decides warranty cost, fuel economy claims and the final showroom price. Chongqing Qiyuan Motorcycle Co., Ltd. — trading under the BAMX brand since 2010 — has built its gasoline engine programme around that reality: a compact, overlapping range that lets a factory fit the same mounting geometry and clutch architecture across several displacement classes, while still offering the torque spread that different export markets demand.

The range now runs from 49.4cc horizontal units for mopeds and light commuters up to a 249.9cc air-cooled single for cargo trikes and heavy dual-sport frames. All are single-cylinder, four-stroke designs with CDI ignition, pressure-splash or forced lubrication, and a two-year or 30,000 km guarantee.

Coverage That Matches Real Export Demand

Our West African, South American and Eastern European distributors rarely order a single displacement. A typical container mixes 70cc and 110cc automatic-clutch engines for city mopeds, 125cc balance-shaft units for commuter bikes, 150cc oil-cooled units for sport frames, and 250cc air-cooled units for tricycles and utility bikes. Keeping those variants inside one supplier cuts certification work, spare-parts inventory and lead-time risk.

Technical Parameters

Build Details That Reduce After-Sales Claims

• Lightened piston with anti-friction coating and thin piston rings, cutting internal power loss and extending service life.
• Race-processed camshaft, clutch and magneto on the sport-oriented 140cc–190cc units for sharper acceleration.
• Balance-shaft design on the YBR125 pattern, the specification most requested for long-distance commuter and taxi use.
• Multi-plate oil-bath clutch and four-speed gearbox on the 50cc–110cc family, with any-gear starting.
• CDI ignition and PZ16/PZ19 carburettors, widely serviced in African and Latin American markets.

Commercial Terms

Minimum order quantity is 100 units per model, with a supply capacity of 10,000 units per year, T/T or L/C payment, and 30 working days production lead time. Engines are packed for container loading, and BAMX supplies matched gaskets, clutch plates, pistons and carburettor spares alongside each shipment so distributors can support repair shops locally.

Why Buyers Consolidate with BAMX

Chongqing Qiyuan Motorcycle Co., Ltd. has shipped complete motorcycles and powertrains from Chongqing since 2010, and today serves distributors across West Africa, South America and Eastern Europe. Buying engines, frames and spare parts from one source means one specification sheet, one inspection standard and one shipment schedule. For assemblers planning 2027 model lines, the 50cc–250cc BAMX engine family provides the widest possible market coverage from the narrowest possible supply base.

Contact the BAMX export team at qiyuanmotorcycle.com for the full engine catalogue, dyno sheets and container loading plans.