The Shimano RD-R8050 Ultegra Di2 rear derailleur features a sleek, low-profile SHIMANO SHADOW RD design for enhanced aerodynamics and durability. Compatible with 11-speed systems, it supports cassette ranges from 11-25T up to 11-34T, ensuring wide gear versatility. Its optimized slant angle and intuitive electronic shifting deliver precise, reliable performance, helping you maintain focus during races. The direct attach mount offers easy installation and a clean look, making this derailleur ideal for riders seeking race-ready endurance and smooth gear transitions.

Every Day Free Shipping: Joe Mamma offers free shipping on all Canadian orders over $200 excluding complete bicycles and trainers. Customers are also welcome to pick up their orders in store at no charge, you can opt to do so at checkout (please await your order completion notice before coming to pick up your order). 

Shipping Policy: Orders will be shipped as soon as possible, customers will be notified if any delay should occur. If one part of your order is unavailable at time of order, your order may be fulfilled with multiple packages. Shipping charges are non-refundable. International clients please note that customs or brokerage fees are the sole responsibility of the purchaser.

Joe Mamma Cycles ships to both Canada & the USA! We use Canada Post, UPS & Fedex to get you the best price & use recycled packaging to reduce our environmental impact.