JASIL – Precision-Engineered Bike Stems for Brands and OEM Partnerships

At JASIL, we bring decades of precision engineering and advanced manufacturing expertise to the cycling industry. Our capabilities in producing high-performance bike stems reflect our commitment to quality, innovation, and adaptability—making us the trusted partner for both branded products and OEM components.

We offer full-cycle production of bike stems, from design and prototyping to CNC machining, surface finishing, and quality control, ensuring every product meets the highest standards of performance and durability. Whether you're looking to expand your product line under the JASIL brand or seeking a reliable partner to manufacture custom stems for your own brand, we deliver on time, on spec, and with competitive efficiency.

Our production flexibility allows for customization in materials, geometries, and finishes, aligning with the specific needs of road, mountain, urban, or e-bike segments. Backed by a rigorous quality management system and modern production facilities, JASIL is prepared to scale from small series to high-volume production while maintaining consistent quality.

Contact us for detailed technical drawings, MOQ terms, or sample validation.

Partner up with JASIL - Accurately Made in Portugal

JASIL – Engineered Quick Release Systems for Demanding Bike Applications

JASIL manufactures high-performance quick release systems designed to meet the mechanical and dimensional precision required by today’s bike OEMs and component brands. With newly expanded hot forging and CNC machining capabilities, we produce levers, axles, and end nuts with tight tolerances, optimized geometry, and consistent surface finish.

All parts are manufactured under ISO-compliant quality systems, with full traceability, material certification, and dimensional certificate. Our in-house production allows us to support small-to-mid volume customization as well as high-volume OEM supply with great lead times.

If you're sourcing reliable, technically-verified quick release systems that integrate seamlessly into your bike designs, JASIL is equipped to deliver performance, consistency, and responsive support.

Contact us for detailed technical drawings, MOQ terms, or sample validation.

Partner up with JASIL - Accurately Made in Portugal

JASIL – Square Taper Crank Axles

JASIL specializes in the production of square taper crank axles, engineered for compatibility, durability, and cost-efficient performance across a wide range of bicycle categories—including city, trekking, MTB, and e-bike applications.

Leveraging our in-house forging, precision CNC turning, and heat treatment processes, we produce axles with consistent fit tolerances, hardened spindle surfaces, and optimized geometry for ISO/JIS square taper interfaces.

With full control of the production chain and ISO-compliant quality assurance, JASIL delivers crank axles ready for integration into bottom bracket assemblies or standalone component lines. We support OEM and private label programs, including product marking and custom packaging.

Contact us for detailed technical drawings, MOQ terms, or sample validation.

Partner up with JASIL - Accurately Made in Portugal

JASIL – High-Precision E-Bike Crank Axles, Built for Power and Endurance

At JASIL, our advanced forging and CNC machining capabilities allow us to produce high-performance e-bike crank axles that meet the growing demands of the electric mobility market. Engineered for strength, durability, and perfect integration with motor systems, our crank axles are built to handle the increased torque and stress unique to e-bikes.

We manufacture crank axles to exact specifications, offering custom designs, tight tolerances, and a variety of material and surface treatment options, all under rigorous quality control. Our vertically integrated production ensures consistency, traceability, and short lead times—ideal for both premium brands and high-volume OEM programs.

Whether you need a standard axle or a fully customized solution compatible with leading motor platforms, JASIL delivers crank axles that enhance drivetrain performance and product reliability.

Contact us for detailed technical drawings, MOQ terms, or sample validation.

Partner up with JASIL - Accurately Made in Portugal

JASIL – Precision-Engineered Bike Stems for Brands and OEM Partnerships

At JASIL, we bring decades of precision engineering and advanced manufacturing expertise to the cycling industry. Our capabilities in producing high-performance bike stems reflect our commitment to quality, innovation, and adaptability—making us the trusted partner for both branded products and OEM components.

We offer full-cycle production of bike stems, from design and prototyping to CNC machining, surface finishing, and quality control, ensuring every product meets the highest standards of performance and durability. Whether you're looking to expand your product line under the JASIL brand or seeking a reliable partner to manufacture custom stems for your own brand, we deliver on time, on spec, and with competitive efficiency.

Our production flexibility allows for customization in materials, geometries, and finishes, aligning with the specific needs of road, mountain, urban, or e-bike segments. Backed by a rigorous quality management system and modern production facilities, JASIL is prepared to scale from small series to high-volume production while maintaining consistent quality.

Contact us for detailed technical drawings, MOQ terms, or sample validation.

Partner up with JASIL - Accurately Made in Portugal

JASIL – Engineered Quick Release Systems for Demanding Bike Applications

JASIL manufactures high-performance quick release systems designed to meet the mechanical and dimensional precision required by today’s bike OEMs and component brands. With newly expanded hot forging and CNC machining capabilities, we produce levers, axles, and end nuts with tight tolerances, optimized geometry, and consistent surface finish.

All parts are manufactured under ISO-compliant quality systems, with full traceability, material certification, and dimensional certificate. Our in-house production allows us to support small-to-mid volume customization as well as high-volume OEM supply with great lead times.

If you're sourcing reliable, technically-verified quick release systems that integrate seamlessly into your bike designs, JASIL is equipped to deliver performance, consistency, and responsive support.

Contact us for detailed technical drawings, MOQ terms, or sample validation.

Partner up with JASIL - Accurately Made in Portugal

JASIL – Square Taper Crank Axles

JASIL specializes in the production of square taper crank axles, engineered for compatibility, durability, and cost-efficient performance across a wide range of bicycle categories—including city, trekking, MTB, and e-bike applications.

Leveraging our in-house forging, precision CNC turning, and heat treatment processes, we produce axles with consistent fit tolerances, hardened spindle surfaces, and optimized geometry for ISO/JIS square taper interfaces.

With full control of the production chain and ISO-compliant quality assurance, JASIL delivers crank axles ready for integration into bottom bracket assemblies or standalone component lines. We support OEM and private label programs, including product marking and custom packaging.

Contact us for detailed technical drawings, MOQ terms, or sample validation.

Partner up with JASIL - Accurately Made in Portugal