Rider tuned gearing Lightweight CFRP & Alloy spider arm, 5 titanium sprockets TECHNOLOGIES HG - EV HG - X11 DURA-ACE - 11-Speed - HG-EV - Road Cassette Sprocket Using a carbon fiber and alloy spider and five titanium sprockets, the DURA-ACE R9100 cassette provides accurate shifting and light weight to the most discerning road cyclists on the planet. MODEL NO CS-R9100 SERIES DURA-ACE R9100 Series Average weight 175 (11-25T) 193 (11-28T) 211 (11-30T) 189 (12-25T) 205 (12-28T) Combination 11-12-13-14-15-16-17*-19*-21*-23*-25*T | 11-12-13-14-15-17-19*-21*-23*-25*-28*T | 11-12-13-14-15-17-19*-21*-24*-27*-30*T | 12-13-14-15-16-17-18*-19*-21*-23*-25*T | 12-13-14-15-16-17-19*-21*-23*-25*-28*T Combination name (Group name) 11-25T 11-28T 11-30T 12-25T 12-28T Type HG-EV Compatible chain LINKGLIDE, HG 11-speed Rear speeds 11 Aluminum gear_QTY (pcs) 0 Aluminum spider arm_QTY (pcs) 1 Carbon spider arm_QTY (pcs) 1 HG spline (ROAD 11-speed) ✔ Steel gear_QTY (pcs) 6 Titanium gear_QTY (pcs) 5 🔥Pre order 7-9 working days Deliver to Malaysia, SG, Brunei, Worldwide Accept Ewallet Boost TouchnGo Etc.. & Credit card How to Order 1.Product Option: 2.Quantity: 3.Color: 4.Name: 5.Address: 6.Contact number: Send to ☎FB http://m.me/icebikeheaven ☎ http://www.wasap.my/60174204398 Sales, Order, Customer service ☎ http://www.wasap.my/60195272398 After sales/ Warranty FOLLOW US ✔ https://www.ebay.com/str/icebikeheaven37 ✔ https://shopee.com.my/icebikeheaven?tab=shop ✔ http://www.lazada.com.my/ice-bike-heaven/ ✔ https://fb.me/icebikeheaven ✔ https://www.instagram.com/icebikeheaven37/ Buy from Us! 🚴🏻💯% POSITIVE FEEDBACK 🚴🏻💯% Warranty & After Sale Service 🚴🏻💯% PARCEL ARRIVAL GUARANTEED 🚴🏻💯% ❌hidden charges 🚴🏻 7️⃣ days size exchange 🆗 🚴🏻 7️⃣ days 100% 💲💲 Guarantee back ☄ Prompt response 🥇♞ SSM Registered company- Icebikeheaven 🥇 8 Years of experience