Variator Set for CYGNUS 125

．Compatible Models: YAMAHA Cygnus 125
．Color: Black

※ Optimized exterior and overall weight design, beneficial for drive performance, heat dissipation, and effective weight reduction.
※ Wide-range transmission ratio, increasing low-end torque and extending the maximum speed range.
※ Optimized roller groove curve design, effectively improving acceleration times without excessive loss of engine torque.
※ Recommended optimal roller weight: 7g × 6 for vehicle tuning.

- Origin -
KOSO was officially established due to the realization that an independently developed brand was indispensable for future market marketing. Therefore, KOSO was registered as a TONG YA trademark in 1989. KOSO is derived from the Japanese words for "conception" and "high speed"; conception represents creativity, while high speed represents high-performance expression—combined, it reflects the company's hope to use creativity to create high-performance products!

- Spirit -
The brand spirit pursued by KOSO is to build quality, technology, and service on the foundation of integrity and mutual trust. We persistently uphold this attitude, not only manufacturing high-quality products but also pursuing product innovation and quality improvement, hoping to bring even more excellent products to everyone.



- Brand Journey -
Pursuing perfect product design and quality has always been our goal; therefore, KOSO constantly spurs itself on by improving its own technology. We firmly believe that brand image and product quality are synonymous! Thus, the company has strict requirements for product development, production processes, and quality control, hoping to achieve the goal of high quality while stepping onto the world stage. In the future, KOSO will continue to develop more user-friendly and innovative products, and hopes to become the next world number one from Taiwan within ten years, another pride of Taiwan, and the pride of the Taiwanese people.

- Exhibitions and Certifications -
TONG YA Electronic has been exhibiting in Italy since 2001, gradually stepping onto the international stage, bringing KOSO's dedication and professionalism to the world, and striving to convey an image of high quality and innovation. It obtained TS16949 international certification in 2007, and ISO 14001 and ISO 45001 international certifications in 2024, and will continue to create more compelling products in the future. Every product launch requires actual installation testing, which is the strictest form of quality inspection. No matter how well a product is designed, once it is actually installed and used, it is a test of quality. To further improve quality and actual product testing, we participate in international competitions. However, every award is an affirmation of the product, because it is a modification that does not allow for errors. We are so rigorous about quality. Test reports and product measurement charts are also our demonstration of the results for customer installation. It is precisely because of this caution that our products can show better quality time after time.




- Equipment and Checkpoints -
The pre-inspection of each of our products uses the most advanced technical machinery, setting different conditions to simulate and conduct tests, such as vibration tests, waterproof tests, etc. All commissioned partner manufacturers who have participated in the inspection process agree with our principles of quality control and trust the test results. What is valuable is that under the test of the product like passing levels, we also add different conditions and make adjustments based on the actual environment, combined with user-friendly operation to present the most realistic test of the product and the quality improved after correction.

※The vehicle model may have different specifications in different regions and may not be compatible for installation.

【Notes Before Ordering】
Before ordering, please double-check the color, size, and other information you wish to purchase.
Most products have lead times provided after the order is placed, so there may be situations where products are discontinued or require a long waiting period for shipment.
If an order cannot be fulfilled due to manufacturer stock shortages or temporary unavailability, it will not be processed; no fees will be charged if the order is not processed.
Please be aware that manufacturers may unilaterally change specifications or exterior designs, which may result in the packaging or the product itself looking different from the images on the product page.
If a manufacturer's unilateral change in product design or specifications prevents the product from performing as expected at the time of order, please consult our customer service for further assistance.
Products undergo multiple shipping processes from order to delivery, so packaging may be deformed or damaged during transit, while the product itself remains intact and functional.
【Return Policy】
If you require a return service, please apply in the return section; please keep the product appearance intact and seal it in its original packaging.
Upon receiving your return request, we will dispatch a logistics provider to collect the item as soon as possible.
For non-human-caused defects, please apply for a return within 7 days of receiving the product.
【Authenticity Guarantee】
For products with an authenticity guarantee, if they are found to be suspected counterfeits and are proven as such through relevant litigation and final court judgment, we will compensate the customer 10 times the original purchase price.