Custom Engineering Options
- Custom stroke and connecting rod configuration review
- Crank pin and counterweight requirements
- Surface treatment discussion
- Logo, private-label and packaging requirements
- Drawing- and sample-based development
CG250 to CG400 72mm Stroker Crankshaft
This CG250 to CG400 72 mm stroker crankshaft is a B2B reference for modified CG-type pushrod engines. Confirm the motorcycle model, engine code and original crankshaft specification before ordering.
- Application
- CG250 / CG400 modified engine
- Intended B2B use
- Big-bore, stroker, racing and performance-upgrade B2B projects.
Confirmed Product Specifications
Values marked Project-confirmed require review against the final application, drawing or sample before production.
- Product
- CG400 Racing CrankshaftConfirmed
- Application
- CG250 / CG400 modified engineConfirmed
- Engine type
- Single-cylinder, 4-stroke, CG-type / pushrod engineConfirmed
- Stroke
- 72 mmConfirmed
- Crank radius / throw
- 36 mmConfirmed
- Common matching cylinder bore
- 84 mmConfirmed
- 84 × 72 mm displacement
- Approx. 399 ccConfirmed
- Common piston pin
- 16 mmConfirmed
- Connecting rod
- Performance / heavy-duty connecting rodConfirmed
- Usage
- Big-bore, stroker, racing and performance upgradeConfirmed
- Configuration
- Complete crankshaft assemblyConfirmed
- Dynamic balancing
- Available for project reviewProject-confirmed
- Customization
- Stroke, connecting rod, crank pin, counterweight and logo requirementsProject-confirmed
Buyer Confirmation Checklist
- Motorcycle model and engine code
- Original crankshaft specification
- Required stroke, crank pin and connecting rod details
- Sample or drawing
- Target quantity and logo requirement
Manufacturing and Quality Control
Foshan Ruizheng Machinery Manufacturing Co., Ltd. reviews manufacturing and inspection requirements against the confirmed project specification.
Crankshaft quality-control informationCG250 to CG400 72mm Stroker Crankshaft FAQ
Answers are limited to the information available for this product reference and project review process.
What engines can this 72 mm stroker crankshaft be reviewed for?
This product reference is for CG250 and CG400 modified CG-type pushrod engines. Please confirm the motorcycle model, engine code and original crankshaft specification before ordering.
What stroke does this crankshaft use?
The product reference uses a 72 mm stroke with a 36 mm crank radius or throw.
Can the crankshaft be customized for a different stroke or connecting rod?
Stroke, connecting rod, crank pin and counterweight requirements can be reviewed against the project specification, drawing or sample.
Is dynamic balancing available?
Dynamic balancing can be reviewed for the project. Confirm the final balance requirement before production.
Can you add an OEM logo?
Logo requirements can be reviewed as part of the confirmed OEM project specification.
What information is required for quotation?
Please provide the motorcycle model, engine code, required stroke, crank pin and connecting rod details, plus a sample or drawing and target quantity.