Heavy wheels are more costly, in terms of performance, than heavy components elsewhere on the bike. This is because high rotational weight ruins a bike's stability and handling characteristics. You don't have to be a racer to feel the difference that a lightweight wheelset can make. When Industry Nine designed the Pillar Carbon Ultralite 29inch Wheelset, low weight was the number one objective. At around 1415 grams total, we'd have to say mission accomplished. Pillar Carbon rims aren't just any run of the mill epoxy and fiber reinforced rings. Industry Nine enlisted help from the composite wizards at Reynolds Cycling. This means that these 28mm outer, 24mm inner width, tubeless rims feature Reynolds' MR5 technology. It focuses on five key elements spoke face, nipple bed, tire channel, rim sidewall, and hook bead in order to optimize resin chemistry and carbon layup for the structural loads of each component. The result is the Pillar Carbon rim with Twin Pillar hookless bead walls. The rims, found exclusively on Industry Nine's Pillar line of wheels, are tubeless ready and offer an excellent strength to weight ratio and ride quality characteristics. The Carbon Ultralite 29 uses 24 spokes per wheel in a 21 lacing pattern to keep weight down. Instead of steel spokes, I9's wheels use 7075 aluminum. The spokes are straight pull, and they have a 25% greater cross section then comparable 1415 double butted steel spokes. In other words, these spokes have a stronger tensile strength. Also, on traditional spokes, threads are rolled, not cut. This adds to strength, but creates a stress riser where the thread channel is narrower than the diameter of spoke itself. Industry Nine, however, doesn't need to roll its threads. Instead, they're created during the machining process, but cut so that the thread channel is the same as the spoke's diameter. The threads themselves are actually larger than the spoke for a strong interface with the hub. That brings to light anoth...