Shimano Ultegra ST-R8170F Di2 Left/Front Lever with BR-R8170 Hydraulic Flat Mount Disc Brake Caliper Shoe Brand_Louis Garneau and u-shaped shoulder knobs dig

and u-shaped shoulder knobs dig in on the turns

8 Stems are fully forged 6061-T6 aluminum stems that have a 4-bolt handlebar clamp

Shimano Disc Brake Adaptors allow the use of different sized rotors to your frame or fork

You can even customize your report to show you what you want to see

WTB Riddler

Shimano Ultegra ST-R8170F Di2 Left/Front Lever with BR-R8170 Hydraulic Flat Mount Disc Brake Caliper Shoe Brand_Louis Garneau and u-shaped shoulder knobs digYour time on the bike is precious, let Shimano make it even better. Ultegra ST R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO WAVE technology. The Di2 platform untethers the shifters while delivering fast and reliable wireless shifting. The BR R8170 hydraulic 2 piston disc brake caliper brings a new level of control to the road cycling world with improved modulation and a quicker initial