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Tailored specifically to the CG125's single-cylinder engine, this valve is engineered for precise performance and durability. It features a high-strength metal construction (typically stainless steel or alloy steel) to withstand extreme temperatures, high pressure, and repeated opening/closing cycles during engine operation. The valve's surface is often treated with anti-wear and heat-resistant coatings to reduce friction and prevent premature wear. Its precise dimensions (including stem length, head diameter, and seating angle) ensure a tight seal with the cylinder head, avoiding gas leakage and maintaining optimal engine compression. Whether for routine maintenance or replacement, it restores the CG125 engine's original air-fuel control capability, supporting reliable daily commuting and light-duty riding.
The valve's accurately machined seating surface and proper fit with the cylinder head ensure a tight seal, preventing air-fuel or exhaust gas leakage and maintaining stable engine compression.
Made of high-strength heat-resistant metal with anti-wear treatment, it endures the high temperatures (up to 800-1000°C) and mechanical friction inside the engine, extending service life.
Engineered to match the CG125 engine's specifications (e.g., stem diameter, head size), it requires no modification for installation, ensuring seamless integration with existing engine components.
By reliably controlling intake and exhaust timing, it optimizes the air-fuel mixture ratio and exhaust efficiency, directly boosting the CG125's power output and fuel economy.
Used to replace worn, bent, or leaking valves during routine engine servicing, restoring normal intake/exhaust function.
A cost-effective option for CG125 owners needing to fix valve-related issues (e.g., poor compression, rough idling) without paying original equipment premiums.
Essential inventory for shops servicing CG125 models, enabling quick valve replacements to minimize customer downtime.
Critical component for rebuilding aged or damaged CG125 engines, ensuring the rebuilt engine meets performance and reliability standards.
| Specification Item | Details |
|---|---|
| Model Compatibility | CG125 motorcycle single-cylinder engine (intake & exhaust valve options) |
| Material | High-strength alloy steel (intake valve); heat-resistant stainless steel (exhaust valve) |
| Valve Head Diameter | Intake: ~30-32 mm; Exhaust: ~26-28 mm (matches CG125 cylinder head specs) |
| Valve Stem Diameter | ~5-6 mm (precision-machined for tight guide fit) |
| Valve Stem Length | ~100-105 mm (varies by exact engine year, OEM-equivalent) |
| Seating Angle | 45° (standard angle for CG125 engine valve seats) |
| Surface Treatment | Valve stem: Chrome plating (anti-wear); Valve head: Heat-resistant coating |
| Operating Temperature Range | Exhaust valve: Up to 1000°C; Intake valve: Up to 800°C |
| Service Life | ~30,000-40,000 km (under normal riding and maintenance) |
| Certification | Complies with ISO motorcycle parts quality standards |
The intake valve is manufactured from high-strength alloy steel, whereas the exhaust valve is constructed from heat-resistant stainless steel to reliably withstand higher thermal loads.
Under standard riding conditions and regular engine maintenance, these valves offer a service life ranging from approximately 30,000 to 40,000 km.
No, these valves are designed as OEM-equivalent parts matching the exact specifications (such as stem diameter, head size, and seating angle) of standard CG125 engine configurations, allowing for direct replacement.
The exhaust valve is rated to endure temperatures up to 1000°C, and the intake valve is rated to handle operating temperatures up to 800°C.
The chrome plating on the valve stem serves as an anti-wear surface treatment that minimizes mechanical friction inside the valve guide, ensuring longer component durability.
By providing a precise 45° seating angle and proper dimensions, they prevent air-fuel or exhaust gas leakage, which directly maintains stable engine compression and optimizes fuel efficiency.
