Chainring RED/Force 12-fach Optie:CHAIN RING ROAD 50T DM X-SYNC AERO BLAST BLACK They also offer the most

They also offer the most dependable airtight seal in the business

New design that adapts better to frames with an inner triangular shape with a shorter head tube

44mm and 55mm models

Femin FP873ZU

Featuring the proven ergonomic touchpoints that make shifting effortless

Chainring RED/Force 12-fach Optie:CHAIN RING ROAD 50T DM X-SYNC AERO BLAST BLACK They also offer the mostSRAM X SYNC wide tooth, narrow tooth chainring technology provides maximum chain control Laser etched chainring finish is more durable X Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear Improved aerodynamics for time trial and triathlon (48T 50T)