SHIMANO为二手DA与UT轮组提供售后保障服务
禧玛诺推出全新DURA-ACE和ULTEGRA轮组，采用全碳纤维设计，支持12速系统，提供更好的空气动力学性能、更高的刚性和更轻量化的重量，为骑行者带来专业体验。
SHIMANO DURA-ACE R9200系列轮组
DURA-ACE R9270 Di2套件以Science of Speed为核心理念，其中一个关键部分是轮组，它是车手踩踏与速度输出的最后环节。SHIMANO新设计的轮组平衡了阻力、操控性以及驱动刚性的三大要素，全新的DIRECT ENGAGEMENT花鼓，以及更轻结构。
为了实现这些要素，SHIMANO创造了全碳真空轮组和管胎型轮组系列，为消费者提供更多选择。相比上一代仅有管胎碳纤维轮组的选择，这一代显得更加吸引人。
三个框高选项：
C36（WH-R9270-C36-TL）适合爬坡，是最轻量化的选项（DURA-ACE C36 TL开口轮组重量：1350g）。
C50（WH-R9270-C50-TL）是一款全能型综合选项，在阻力、横向刚性、驱动刚性及整体重量之间取得平衡（DURA-ACE C50 TL开口輪組重量：1461g）。
C60（WH-R9270-C60-HR-TL）专注于气动性能，是冲刺和高速追逐最佳选择，其重点在于小阻力、高横向刚性和驱动优势（DURA-ACE C60 TL開口輪組重量：1609g）。
所有三款前轮辐条采用1:1编制，并使用1.5mm辐条进行减重；而C60使用2:1编制加粗辐条(1.8mm)提升侧向刚性10%，尤其适合高功率或大体积车手。这是三款不同设计思路上的最大区别。
SHIMANO将“DIRECT ENGAGEMENT”技术应用到公路车12速花鼓上，该技术已用于山地车高端12速花鼓，以提高驱动剛性。测试中的每位車手都感受到了差异并给予正面反馈。
通过“DIRECT ENGAGEMENT”棘輪結構实现了力量传输效率提升，同时使花鼓减轻45g，但同时保持较强的心臂剛度。
塔基为12速专用型式，与Shimano 12速飞輪搭配
降低阻力的目标是一个重要目标，而C50在这方面表现突出。在比赛中，比起之前同等级别版本，有进一步降低阻力的效果，同时具备了可控性的优势。
对于转换质量，每克都至关重要，因此新系列各个模型所用的圆圈也做出了减少。与之前类似产品相比，一对新款C50-TL圆圈比旧款減輕161g。
DRIVE CHAIN SYSTEM
The new Shimano Ultegra R8100 series offers a full-carbon rim brake wheelset for the first time at this level, with three frame heights to choose from - 36mm, 50mm, and 60mm. The new Ultegra provides a balance of three factors - in terms of reducing drag without sacrificing control, drive train stiffness and lightweight structure; offering three full-carbon rim brake wheelsets to choose from.
Three frame height options:
C36 (WH-R8170-C36-TL) is suitable for climbing and is the lightest option in the series (Ultegra C36 weight per pair:1488 g).
C50 (WH-R8170-C50-TL) is an all-around comprehensive option that balances drag resistance, lateral stiffness drive train stiffness, overall weight and controllability (Ultegra C50 weight per pair:1570 g).
The C60 is designed for speed performance with high lateral stiffness and drive train advantages.
For more consumers to experience the excellent performance of Shimano's new wheels, Shimano Trading Co., Ltd will launch a "Double Assurance Double Confidence" campaign providing additional after-sales service guarantees for some products. Customers must purchase specified new Dura-Ace or Ultegra wheels from authorized dealers before December 31st last year and complete binding on Shimano's WeChat public account. If within three years after purchase date or binding date there are damages to these products customers can exchange them at designated dealers with discounts on similar or same-level product prices.
Editor: Select Jade
Picture: Select Jade/HCY/Shimano
