Head I-Speed 4.0 Ultegra Di2 Size:52 0 Aero SL is made

0 Aero SL is made from superlight HM (high modulus) carbon fiber to ensure precise steering in a lightweight model suitable for racing

Profile height 50 mm

Thanks to the use of USB ceramic bearings

Ride with confidence

Burn Guard grip in heat- and wear-resistant suede leather

Head I-Speed 4.0 Ultegra Di2 Size:52 0 Aero SL is madeHEAD I Speed 4. 0 The Pinnacle of Road Performance No compromises. Just pure speed. The HEAD I Speed 4. 0 represents the cutting edge of modern cycling technology. Designed for competitors and those who see cycling as a constant challenge against the clock, this bike combines the best of ultra high modulus carbon with Shimanos most advanced electronic shifting system. Carbonio TPR Ultra Light & Integrated Design The Carbonio TPR frame of the 4. 0