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Race tech: Adam Craig's wheel and tyre prototypes

Adam Craig (Rabobank-Giant Off-Road Team) tested his reconstructed ACL at this past weekend's Mellow Johnny's Classic with a new front wheel and new tread design, both of which we expect to be officially introduced later this year.

Craig's new tyres looked to fill the gap between Michelin's current Wild Grip'R and Wild Race'R treads with a low-profile centre section for low rolling resistance and minimal squirm on hardpacked linked to progressively more aggressive transition and shoulder blocks for a confident hold through the corners.

The central knobs are also hollowed out to provide more biting edges - a critical feature on hard terrain - and the shoulder blocks are notably well supported for what's expected to be a solid bite when the bike is leaned far over.

Craig says the new design feels nearly as fast on hardpack as the Race'r but is more predictable and less prone to sliding when the ground is also covered with loose gravel.

Michelin has yet to announce details on the new tyre but we expect to see a full range of sizes (2.00-2.30") as casing types later this year.

Craig's front tyre was also mounted on an as-yet-unannounced Shimano XTR front wheel that uses the same scandium-enhanced tubeless-compatible rim and unique brazed-on spoke eyelets but built around a dedicated 15mm thru-axle hub.

Shimano US press officer Devin Walton wouldn't confirm that the new axle fitment is on the way, saying, "We have a 15mm E-thru front hub, but not a wheel set... yet," but it's quite clear that it's coming soon. Stay tuned.

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