Much lighter weight than 105 Ultegra! Carbon material
Able to connect LTWOO APP to customize base on your currenct setup
You can choose 2x12s or 2x11s 1x 12s 1x11s
11 12 speed compatible (easy and cheap upgrade from your current groupset!)
2 years warranty
Model Number: eRX
Total capacity:34T
Gears:12Speed
Material：Carbon Fibre
Type:Rear Derailleur
Components:Derailleur
Origin: Mainland China
Lightweight material
Premium feeling
Semi wireless like Shimano 12 speeds di2
Hydraulic disc brake
LTWOO eRX uses two 14500 lithium batteries and two CR2032 button batteries.
14500 battery capacity: 800mAh, 3.7V, 2.96Wh.
14500 batteries installed in the battery box
CR2032 battery installed inside the shifter.
FAQ Your merchandise will be processed within 2-5 business days. We process all the order(s) from Monday to Friday, excluding weekends and holidays. Shipping information Your order(s) will be shipped by EMS expedited parcel from Malaysia with tracking number. “Estimated Delivery Time” will vary based on your location. Normally you will receive the parcel in 2-7 business days after send out. Customs & Taxation Item may be delayed if held by Customs for additional inspection, then the Post has no information on awaiting Customs inspection. Once the parcel goes through the Customs, the shipping information will be activated by your Local Post. Import duties, taxes, and charges are not included in the item price or shipping charges. These charges are the buyer responsibility. Return Policy Unwanted Goods/ joy buying return is unaccepted. Faulty / Wrong described Goods Return item(s) should include the original packaging and accessories. If you receive a faulty item or wrong product, please contact us for inquiry. We will bear the return postage, and provide a proper solution to the case, such as the replacement, full or partial refund. Customer Service As a responsible seller, your satisfaction is our priority. If there's any concern with the product(s), please feel free to contact us anytime. We'll assist you as soon as possible and answer all messages within 12-24 hours Why buy from us? 🚴🏻We have our own offline store for walk in purchase! 🚴🏻We have been Operating for 10 years+. 🚴🏻We have senior mechanics for any technical question. 🚴🏻100% parcel arrival guarenteed. 🚴🏻Warranty and after sale service. 🚴🏻Prompt customer service. 🚴🏻Registered bike cycling business in Penang, Malaysia. 🚴🏻We love cycling!