Shimano Speed Kolossos Oversized Derailleur Cage - 11 and 12 speed Dura Ace and Ultegra Color:Raw This bottom bracket is compatible

This bottom bracket is compatible with a variety of bikes and comes with sealed options to suit your riding style

Whether you're shredding the trails

Kogel's steerer-tube clamp bolts are 16mm long and made from titanium

Ground clearance remains virtually unchanged—within 2mm of stock length without hanging lower

Shimano Speed Kolossos Oversized Derailleur Cage - 11 and 12 speed Dura Ace and Ultegra Color:Raw This bottom bracket is compatibleKogel Speed Kolossos for Shimano 11 & 12 Speed (Dura Ace & Ultegra): The Fastest Oversized Derailleur Cage Yet Speed is the name of the game. The all new Kogel Speed Kolossos for Shimano 11 and 12 speed Dura Ace and Ultegra is engineered for the ultimate balance of aerodynamics, efficiency, and durability. Designed for riders who refuse to compromise, this oversized derailleur cage system is the fastest Kolossos ever, fine tuned to shave watts and