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Feiya Machinery specializes in manufacturing high-performance aftermarket Honda Cylinder Heads for global distributors and engine rebuilders. We understand that combustion chamber components require uncompromising accuracy. That is why our cylinder heads are cast from premium A356 aluminum alloy and subjected to strict T6 heat treatment for optimal thermal conductivity and structural integrity.
Utilizing our advanced CNC machining centers, every port, valve seat, and mating surface is machined to exact original factory tolerances. Whether you are sourcing standard replacement parts or require custom OEM manufacturing for specific engine platforms, our facility guarantees stable mass production, zero-leakage performance, and a perfect drop-in fit.
Home > Honda Motorcycle Cylinder Heads
Feiya supplies a versatile range of aftermarket engine heads designed to fit popular Honda platforms. To meet the diverse needs of global distributors and engine rebuilders, we offer both bare cylinder heads (precision-machined aluminum castings ready for custom valvetrain installation) and fully assembled models (complete units ready for immediate drop-in replacement). Every head undergoes strict CMM dimensional inspection and leak testing in our facility, ensuring a perfect seal and reliable performance under high-stress conditions.
To accommodate different performance requirements and target markets, Feiya offers flexible OEM customization options. The table below outlines our standard and custom specifications for manufacturing aftermarket engine heads.
Customization Capabilities Table:
| Customization Parameter | Feiya Customization Options & Standards | Engineering Benefits |
| Casting Material (Alloy) | A356 Aluminum Alloy (JIS AC4CH, ZL101A) | A356: Exceptional fluidity for complex water jackets and high thermal fatigue resistance. |
| ADC12/ A380 Aluminum (For HPDC) | ADC12/A380: Excellent castability and dimensional stability for high-pressure structural parts. | |
| Custom alloys available upon request. | ||
| Casting Process | Low-Pressure Die Casting (LPDC) | LPDC/Gravity: Ensures a void-free microstructure. Eliminatesporosity to prevent oil/coolantcross-contamination. |
| Gravity Casting | ||
| High-Pressure Die Casting(HPDC) | HPDC: Delivers high-speed,cost-effective mass productionfor air-cooled cylinder headsand engine covers. | |
| Heat Treatment | T6 Treatment (Solution Treatment + Artificial Aging) | Maximizes tensile strength, yield strength, and structural rigidity. Prevents warping under extreme engine temperatures. |
| CNC Machining | 125+ Advanced CNC Machining Centers (3, 4, & 5-axis capabilities) | Achieves exact original factory tolerances (up to 0.005mm) for valve seats, camshaft journals, and combustion chambers. |
| Surface Finish | Hanging Shot Blasting, Sandblasting, or Custom Powder Coating/Painting | Removes casting flash and oxide layers. Ensures perfectly clean deck surfaces for optimal head gasket sealing. |
| Seal Compatibility | Hexagon CMM Dimension Inspection, 100% Leak/Pressure Testing, Spectrometer Material Analysis | Guarantees a perfect drop-in fit, strict dimensional stability, and zero-leakage performance out of the box. |
| Assembly Level | Bare Cylinder Head (Casting & Machining only) Fully Assembled (With valves, springs, retainers installed) | Provides flexibility for engine rebuilders who want custom valvetrain setups vs. immediate drop-in replacements. |
Feiya Machinery manufactures high-precision aftermarket cylinder heads compatible with a comprehensive range of Honda motorcycle platforms. From classic single-cylinder commuter bikes to high-performance inline-4 superbikes, our casting and CNC machining capabilities ensure a perfect drop-in fit.
Engineered for durability and excellent thermal dissipation in air-cooled and small-displacement liquid-cooled engines
·Classic Commuter & Street:Compatible replacement heads for CG125 / CG150 (OHV), CB125F / CB150, CBF125 / CBF150, and underbone models like Wave110 / Wave125 / Dream.
·Lightweight Sport & Naked:Precision castings for CBR125R, CBR150R, CBR250R, CBR300R, and the popular Grom (MSX125).
·Off-Road & Dirt Bikes:High-strength aluminum heads built for the rugged CRF Series(CRF150, CRF230, CRF250, CRF450) and XR Series(XR125, XR150, XR250).
·Global Commuter Models:Replacements for CB Unicorn 150/160, Shine 100/125, Navi 110, Livo 110, CD110 Dream, and XBlade 160.
Manufactured to exact OEM tolerances to ensure synchronized valve timing and robust performance.
· Parallel Twin Engines: Replacement cylinder heads for CB250 / CB300, the popular 471cc platform (CB500F, CB500X, CBR500R), CBR250RR, and the NC750S / NC750X.
· Adventure & Touring: Heavy-duty castings for the CRF1100L Africa Twin, XL750 Transalp, and NT700V Deauville.
· Cruiser & V-Twin: Custom and replacement heads for the Rebel Series (250/300/500), CX500 / CX650, VT750 Shadow, and the large-displacement VTX1300 / VTX1800.
Designed for high-RPM superbikes and flagship touring motorcycles, featuring complex water jackets and ultra-precise CNC valve seats.
·Inline-4 Sport & Naked: High-performance assemblies for CB650F / CB650R, CBR650R, the classic CBR600RR, and the liter-class CB1000R / CB1100.
· Flagship Superbikes: Precision cylinder heads compatible with the CBR1000RR Fireblade and CBR1000RR-R SP.
· V4 Touring: Complex engine heads for VFR800 and ST1300 Pan European.
Precision-cast aluminum cylinder heads engineered for Honda's globally deployed GX and GCV series small engines. These platforms power generators, water pumps, pressure washers, tillers, and commercial lawn equipment worldwide, demanding consistent thermal performance and long service intervals under heavy-duty operating conditions.
·GX Commercial Series:Compatible replacement heads for GX120, GX160, GX200, GX240, GX270, GX340, and GX390. These OHV horizontal-shaft engines are the backbone of the global small engine market. Our castings match OEM port geometry and fin spacing for reliable air-cooled heat dissipation.
·GCV Residential Series:Aftermarket cylinder heads for GCV160 and GCV170 vertical-shaft engines, widely used in walk-behind lawn mowers and residential pressure washers. We maintain strict valve seat concentricity and head gasket surface flatness for leak-free operation.
·GP & GXV Series:Replacement heads compatible with GP160, GP200 general-purpose engines and GXV160, GXV340, GXV390 vertical-shaft commercial models used in riding mowers, commercial turf equipment, and industrial pump sets.
Tell us your model and quantity — our team responds within 24 hours.
Get a Quick QuoteProducing an aftermarket Honda cylinder head that matches the reliability of the original factory part requires more than just pouring molten metal. From the high-revving CBR inline-4 to the rugged CRF off-road platforms, Honda engine architectures demand flawless thermal management and precise valvetrain geometry. Here is how Feiya’s 16+ years of casting expertise translates into OEM-grade replacement Honda engine heads:
Reverse Engineering & 3D Core Design
LPDC & Gravity Casting with A356 Aluminum
T6 Heat Treatment for Structural Rigidity
Multi-Axis CNC Machining
100% Leak Testing & CMM Verification
Over the years, we have provided long-term and stable cylinder head OEM manufacturing services to many motorcycle brands (including listed companies), and have become the largest motorcycle cylinder head manufacturer in Yueqing City, China.
Feiya is a seasoned OEM manufacturer with 17 years of expertise in aluminum die casting. While renowned for our multi-platform motorcycle cylinder heads, our capabilities extend to automotive structural parts and precision fuel dispenser components. We provide complete end-to-end support—from mold development and high/low-pressure die casting to complex CNC machining and rigorous testing—delivering ready-to-assemble solutions for diverse industries.
Operating within a 17,000+ m² facility, Feiya integrates the complete aluminum manufacturing cycle—from in-house mold design and die casting (HPDC & LPDC) to precision CNC machining. Equipped with over 30 advanced casting units and 125+ CNC centers, we maintain an annual capacity exceeding 5,000 tons. This vertical integration allows us to strictly control production timelines and guarantee stable, scalable supply for your critical OEM projects.
Quality is the core of our operations. Feiya is ISO 9001 certified and recognized as a National High-Tech Enterprise and a Technology-Based SME in Zhejiang. We adhere to rigorous quality management systems to monitor every process, from raw material inspection to final tolerance checks. These credentials reflect our commitment to technical innovation and prove our reliability as a trusted partner for global automotive and industrial clients.
Our standard Minimum Order Quantity (MOQ) is 500 units per model. This volume enables us to optimize our die-casting and multi-axis CNC machining processes, ensuring consistent OEM-level precision and cost-effective pricing for B2B distributors. Whether you are ordering existing replacement models or require custom cast aluminum Honda motor heads involving new tooling, the 500-piece MOQ applies. Please contact our engineering team with your production requirements.
Yes. Because Feiya controls the entire manufacturing process from 3D core design to multi-axis CNC machining, we can adjust intake and exhaust port dimensions, valve seat angles, and combustion chamber volumes. We frequently collaborate with performance brands to manufacture upgraded Honda cylinder head assemblies tailored for high-RPM applications.
We provide both options to suit your operational needs. You can order bare castings that are fully CNC-machined and ready for your own valvetrain components. Alternatively, we supply fully assembled replacement engine heads complete with pre-installed valves, springs, retainers, and high-temperature seals for immediate drop-in installation.
Quality control is integrated into every step of our production. We perform 100% leak and high-pressure water testing on the internal jackets to ensure there is no risk of coolant or oil cross-contamination. Furthermore, the deck flatness and critical camshaft journal dimensions of all our motorcycle engine heads are verified using Hexagon CMM equipment prior to shipping.
Feiya Machinery offers two distinct engineering pathways for custom aluminum casting projects, depending on the technical assets provided by the client.
Direct OEM Production (Client-Provided CAD Data)
When clients supply proprietary 3D models (STEP/IGES) and 2D engineering drawings, we execute a strict Build-to-Print manufacturing protocol
Our engineers conduct a Design for Manufacturability (DFM) review, evaluating draft angles, wall thicknesses, and CNC machining allowances. We utilize casting simulation software to optimize the gating, runner, and overflow systems to prevent internal porosity and shrinkage.
Based on the approved DFM, we CNC machine high-durability steel dies (typically H13 tool steel) and precision sand core boxes for complex internal geometries, such as engine water jackets.
Initial cast samples undergo T6 heat treatment and multi-axis CNC machining. All dimensions, geometric tolerances, and material specifications are strictly verified via Hexagon CMM and spectrometry against the client's 2D drawings for final approval.
Upon FAI approval, we initiate stable volume production (MOQ 500 units) using our LPDC, HPDC, or gravity casting lines, ensuring strict batch-to-batch consistency and zero-leakage performance.
Reverse Engineering (No Original Data Available)
When original CAD data is unavailable, our engineering team converts physical OEM samples into production-ready tooling through a data-driven workflow
We evaluate 1-2 intact OEM samples and define critical parameters: exact aluminum grade (e.g., A356, ADC12), assembly datums, functional clearances, and pre-allocated stock for post-casting CNC machining.
We apply a micro-thin developer spray to the bare aluminum and use high-precision blue light optical scanners (such as ATOS) to capture a comprehensive 3D point cloud with a dimensional accuracy of up to ±0.01mm.
Raw point cloud data is imported into reverse engineering software (e.g., Geomagic Design X) to generate a polygon mesh. Our engineers reconstruct a fully editable parametric solid model (STEP/IGES), analyzing the original design intent and optimizing critical casting features rather than simply copying the geometry.
Because the physical OEM sample has already undergone metal shrinkage, our tooling engineers calculate and apply precise double-shrinkage compensation factors to the reconstructed digital model. We then finalize the gating systems and run casting simulations prior to machining the steel mold.
