Writers'Rigs: We have all seen Chuck Peña's fine Felt FC bike in his wheel, chainring and saddle reviews in the past, but we've not heard too much about the steed its self. Not to miss a chance to show off his bike and describe the ins and outs of its existence... Chuck's Writers' Rig in detail.

Road Tubeless Tech: Thinking of making the jump to tubeless? PEZ-Man Chuck Peña has leapt into the unknown and fitted a set of Pirelli Cinturatos to his Irwin Cycling AON TLR wheelset. Chuck runs through the tire fitting and the potentially disastrous sealant injecting to find the ins-and-outs of going tubeless.

Chuck Peña has been doing a bit of investigation and experimentation on mixed depth aero rims after he spotted Nairo Quintana using them in the Tour de Suisse. If a wispy climber like Quintana was riding a set of mixed depth aero wheels, maybe mere mortals who weigh more and don’t possess the same climbing prowess should consider doing so too? The PEZ mixed wheel comparison.

You know Irwin Wheels… You just don’t know that you know. They’ve designed, tested and built wheels and other products for cycling and started as a Moto design and engineering house. The Irwin Wheels Carbon 38 road hoops are built in house from raw fiber to finished product… And they're good.

Our first look at IRWIN Wheels' AON GX35 carbon tubeless-ready wheels for gravel riding... Priced at US $1550, these promise some big value.