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Reduces friction between the piston and cylinder when the combustible gas explodes, enhancing power output and engine durability.
Adopts a large-diameter crankshaft, enlarged crankshaft bearings and connecting rod needle bearings, and an interference fit with the right crankcase, significantly reducing engine vibration and noise.
Ensures smooth operation and long service life, with strict quality control in material selection (such as 40Cr steel) and processing.
Efficiently converts piston motion into rotational energy, contributing to the engine's 6.5kW maximum power and 8.7N·m maximum torque.
Suitable for CG250 series underbone motorcycle users for short-distance trips in cities, ensuring stable power output during rush hours and smooth navigation through urban traffic.
Applied in rural areas for carrying small cargos and daily commuting on rural roads, providing reliable performance under various road conditions.
Used as a replacement part for engine overhauls or when the original crankshaft is worn out, ensuring the motorcycle's engine operates efficiently again.
For fleets using CG250 series motorcycles (e.g., delivery or rental services), it guarantees consistent power transmission and reduces downtime due to engine failures.
| Specification Item | Details |
|---|---|
| Applicable Model | CG250 Series, 250cc ATVs, Dirt Bikes |
| Engine Displacement | 250cc |
| Cylinder Bore × Stroke | 67.0mm × 53.0mm |
| Material | 40Cr steel |
| Structure | Single-cylinder four-stroke crankshaft |
| Key Technology | Crankshaft eccentric technology, high-rigidity structure |
This crankshaft is designed specifically for CG250 series engines, which are commonly found in various 250cc dirt bikes, ATVs, and off-road vehicles.
It is manufactured using high-quality 40Cr steel, under strict quality control processing to ensure maximum rigidity and a long service life.
The eccentric technology reduces friction between the piston and the cylinder walls during combustion, which optimizes power output and enhances overall engine durability.
It features a standard cylinder bore and stroke configuration of 67.0mm × 53.0mm, ideal for single-cylinder four-stroke engines.
Yes. Its high-rigidity design features a large-diameter crankshaft, enlarged bearings, and an interference fit with the right crankcase, all of which work together to minimize engine vibration and operational noise.
