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Customization

Customization

What a Custom Cylinder Head Program Covers

From a sample casting or a drawing, we adjust the four areas below to your engine, your market and your duty cycle — then hold them with batch documentation across the production run.

Material Selection

ZL111 aluminum-silicon alloy, with alloy grades selectable according to heat resistance and strength requirements.

Cooling Method

Water cooling, with the water jacket formed using a sand core.

Surface Treatments

Sandblasting, anodizing, hard anodizing, and coatings according to project requirements.
What a Custom Cylinder Head Program Covers

Casting Processes

Low-pressure casting as the primary process, featuring low porosity and a dense microstructure, alongside high-pressure casting.

Intake/Exhaust Structure & Combustion Chamber

Intake and exhaust structures and combustion chamber shapes designed according to customer engine requirements.

Engine Displacement & Model Compatibility

Custom solutions for single-cylinder, V-twin, and parallel-twin engine configurations.

Share Your Drawing or Sample

Send engineering drawings, CAD files or a physical sample. No formal drawing — we scan and measure the sample, reverse-engineer the geometry and build the specification with you.

Specification Review & Proposal

We return a marked-up proposal: the dimensions we will hold, the changes we recommend, the records each batch will carry, plus lead time and tooling scope.

Prototype & Measurement Validation

Prototypes are machined and measured — chamber volume, seat concentricity, guide bore, deck flatness — and critical dimensions are verified against your engine before any batch commitment.

Pilot Batch & Fitment Approval

A pilot batch ships for your fitment and bench testing; your feedback is worked into the fixtures before full production begins.

Production With Batch Documentation

Production runs under batch documentation, so the head you reorder next season measures like the one you approved.

Custom Projects We've Delivered

Cooling Fin Redesign for a Southeast Asian Commuter OEM

Cooling Fin Redesign for a Southeast Asian Commuter OEM

A high-volume commuter OEM needed better heat dissipation for tropical taxi duty. We redesigned the fin geometry and added deck thickness, validated the change on their engine, then delivered the program at tens of thousands of units per season with batch flatness records — and no thermal-warranty claims since launch.

Insert-Type Head System for a European Tuning Brand

Insert-Type Head System for a European Tuning Brand

A tuning brand wanted an insert-type two-stroke head line under its own name — the format the KTM aftermarket made mainstream, covered on our KTM aftermarket cylinder heads page. We machined shells and interchangeable inserts to their compression specifications, engraved and packed under their brand, with chamber volumes documented per insert batch.

Clone-Family Fitment Program for an African Distributor

Clone-Family Fitment Program for an African Distributor

An African distributor was losing returns to clone-engine misfits across the GN-family copy market. We measured their sample set, consolidated the variants into a documented fitment chart and cataloged each head against it — returns fell, and the chart became their ordering standard. The same clone traps are mapped on our commuter bike cylinder heads page.

01Can you develop a head from a sample if we have no drawings?

Yes — a physical sample is enough. We scan and measure it, reverse-engineer the geometry and build a manufacturing specification for your approval before any tooling is cut.

02How do you protect our design if we share drawings?

Your drawings and specifications stay under confidentiality agreement, and customer-specific fixtures and machining programs are reserved for your orders. We do not offer your custom geometry to other buyers.

03What tolerances can you hold on a custom cylinder head?

Critical dimensions — seat concentricity, guide bore, deck flatness, chamber volume — are held to the limits agreed in the specification and recorded per batch. Tell us which dimensions matter most on your engine and we build the control plan around them.

04How long does a custom program take from sample to production?

A typical program moves from sample to measured prototype within a few weeks, then through a pilot batch for your fitment testing, and into production once you approve. New castings add tooling time, confirmed with the quotation.

05Can you match an OE head while improving one weakness?

Yes. Interchangeability with the OE part is the baseline; we then adjust the target area — seat material, chamber shape, fin layout or port geometry — and validate the change against your engine before production.

06Can production carry our own brand and packaging?

Yes. Engraving, surface finish and retail or bulk packaging are built to your brand specification, and batch documentation ships under your name for your own customer files.

Talk to Our Team

Our specialists are here to guide you through every detail.

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