Second only to its Zxellium SLR Ti pedal, the Zxellium SLR clipless road pedal lacks only the SLR Ti's titanium spindles, which reduce weight by about 35 grams, to keep it from Mavic's very top shelf. The SLR's steel spindles, however, are better suited to larger, more powerful riders. Self sponsored riders on a budget will also appreciate the SLR's savings at the register. Other than the spindles, the SLR has all the high performance features of its big brother. The carbon fiber body is lightweight, stiff, and features a large platform to put the power down. Composite springs also reduce weight, and won't ever fatigue or lose their spring. The iClic system makes clipping in easy, and features a tension adjustment that lets you customize the pedal's feel. The Zxellium provides 2. 5mm of float for a knee friendly, comfortable ride.