PEAK 4550: A New Milestone in Performance Cycling WheelsExceptional Handling. Ultra Lightweight. King of the Mountain.Princeton CarbonWorks announces their all-new PEAK 4550, developed in conjunction with the top cyclists in the world; a lighter, stiffer, stronger, and more aerodynamic solution directly targeted at world tour and grand tour racing (and of course, ALL racing and ridingâ¦)