High performance lightweight oversized alloy 7075-T6 stem as used by top professional riders3D forged 7075-T6 alloy construction increases strength and keeps the weight downGapless head lock clamp design makes side movement under load impossible where traditional top bolts would be under high stressWide bolt spacing and forged alloy faceplate further secures and stiffens clamp interfaceTriangular design gives optimal stiffness to weight ratioOversized 31.8 mm clamp diameter further reduces unwanted flex under high load by increasing strength and stiffnessAngled reverse bolts remain easy to access whilst drastically reducing dragInternal routing for Di2 cablesAngle: -10 or -17 degrees1-1/8 or 1-1/4 inch steerer tube options availableWeight from 125g