Kona Wheelhouse is based on the same Reynolds 853 frame and carbon fork found on their much more expensive ($3799) Roadhouse. Wheelhouse features thru-axles front and rear, excellent TRP Spyre brakes, and a Tiagra 2 x 10 drivetrain that is capable, competitive, and ensures this contemporary steel horse is built to ride well into the sunset and beyond.
For 2017, the 12x148 Boost standard thru axle enters the mix. Boost spacing provides more tire clearance at the chainstay yoke, while the rear wheel is stiffer and more durable relative to a 12x142 thru-axle.
Food for thought: The same frame (minus the fillet brazing) and fork, when sold as the Roadhouse frameset, costs $1399. For $200 more, you get a complete bike, it's just called the Wheelhouse.