ADHX 45 Shimano GRX Mechanical 2x 12sp

The ADHX 45 lineup spans five complete builds, ranging from premium mechanical setups to flagship electronic groupsets. Because the frame utilizes a modular cover system, it cleanly accommodates both single and double chainring configurations.

The ladder begins with Shimano GRX 12-speed mechanical builds in either 1x or 2x formats. These entry points deliver reliable, tactile shifting and share the exact same Dyneema-enhanced carbon frame and Kevlar-reinforced fork as the top-tier models. Moving up the range introduces electronic shifting with SRAM Force AXS 2x and Shimano GRX Di2, both offering precise gear changes that remain unaffected by mud or cable contamination. At the top, the SRAM Red XPLR 1x build maximizes weight savings and drivetrain simplicity for dedicated gravel racing.

Across all builds, riders can select from a menu of wheelsets, including alloy options from Boyd or carbon upgrades from Vision and Mavic, all wrapped in 45-millimeter Vittoria tires. While the entry price is undeniably steep, the value of the ADHX 45 lies in its boutique manufacturing, forged carbon hardware, and a lifetime frame warranty that provides long-term security for a high-end investment.

Reviewers consistently praise the ADHX 45 for delivering a highly refined ride that balances stiffness under power with exceptional vibration absorption. Testers note that the woven carbon construction effectively manages high-frequency chatter, with one rider observing that the frame manages to "dampen rocks, potholes, and other 'dings'" on rough logging roads (Blog). Despite the increased tire volume and lengthened chassis, the bike retains a snappy, efficient character. Multiple sources highlight that it maintains "road bike-like acceleration" during hard efforts out of the saddle (YouTube).

When navigating technical terrain or fast descents, the steering is frequently described as predictable and "intuitive to handle" (Blog), avoiding the nervous twitchiness of pure road bikes and the sluggishness of ultra-slack adventure rigs. Testers found that dropping tire pressures on the 45-millimeter rubber further enhances the "sublime ride quality" over long distances (YouTube).

The primary tradeoff noted by reviewers centers on the fully integrated front end. While the hidden cables create a clean aesthetic, the routing through the headset bearings complicates home maintenance. Additionally, while the frame itself proved highly durable in muddy and abrasive conditions, a few testers experienced minor frustrations with third-party electronic accessories. Overall, the consensus points to a beautifully finished, highly capable machine that rewards skilled input.