NEW Shimano Tiagra BR-4700 Rear Brake Caliper brand_thule e-tube is a two-prong system

e-tube is a two-prong system and is NOT cross compatible with Dura-Ace 7970 Di2 wiring

affordable replacement 1/8" chain

a dedicated ID pocket and a row of 3 card slots on the right provide plenty of space for your currency and cards

Shimano Ultegra RD-R8000 Rear Derailleur:

High-strength plastic composite

NEW Shimano Tiagra BR-4700 Rear Brake Caliper brand_thule e-tube is a two-prong systemShimano Tiagra BR 4700 Road Brake Calipers Provides 30% increased braking power over the previous generation Super SLR dual pivot designs keeps operating friction to a minimum Enhanced brake arch proportions give a quicker linear response Lightweight aluminum caliper design with tough anodized finish 49 mm drop