Signature Open Back Arm Cups + Speed Concept Hardware Chain Whips SHIMANO 105 will continue to

SHIMANO 105 will continue to motivate and inspire more riders than ever to go after greater challenges

Front or Rear

Side patches reflect when light hits for added visibility and safety

and M-type mounts

HG-X11 special asymmetric plate design for 11-speed

Signature Open Back Arm Cups + Speed Concept Hardware Chain Whips SHIMANO 105 will continue toSignature Open Back Arm Cups: The Ultimate Aero Comfort Upgrade The TriRig Signature Open Back Arm Cups are designed for comfort and performance. Crafted from our ultra strong, lightweight ThermoPlast material, these arm cups offer superior strength and durability at our most affordable price point ever. Triathletes and time trial cyclists who use our Signature Open Back Arm Cups stay comfortable in the aero position longer due to the textured