Shimano Ultegra Di2 RD-R8150 Rear Derailleur 12 Speed RGroup_36138F36864A07A16C95AC7D3229FC246DC99BAB and XTR M9100 calipers

and XTR M9100 calipers

The subtle palm bulge and ridges on the underside fit in the creases of your fingers for a locked-in feel

low-profile design ensures light action and smooth operation

Type: Double

and pad spreader for easy installation

Shimano Ultegra Di2 RD-R8150 Rear Derailleur 12 Speed RGroup_36138F36864A07A16C95AC7D3229FC246DC99BAB and XTR M9100 calipersThe Shimano Ultegra Di2 RD R8150 Rear Derailleur 12 Speed provides cyclists with an advanced electronic shifting experience, ensuring precise and effortless gear changes. Compatible with Shimano's 12 speed systems, this lightweight derailleur enhances bike performance and offers exceptional durability. With improved battery life, riders can enjoy longer rides without worrying about losing shifting capabilities. The RD R8150 combines cutting edge