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Different by design.
Look no further than the Crank Brothers Cobalt 2 29in Boost Wheelset if you're seeking an eye-catching upgrade to your XC whip or trail bike. This version of the Cobalt 2 accommodates the latest Boost standards of modern XC and trail machines. Boost eliminates the excess flex that 29-inch wheels are known for, especially when you're riding across rugged trails littered with rocks.
Strikingly situated with its unique twinspoke design, this wheelset increases overall stiffness and strength by supporting rider forces with its triangular spoke structure. To those unfamiliar with engineering, triangles are employed on bridges and overhanging structures, namely for their load-bearing ability. Translated into the Cobalt 2's riding experience, you'll appreciate a noticeable increase in stiffness over flimsier stock wheels. Another benefit to twinpair spokes is that overall mass sits closer to the wheel's center for quick acceleration when you're spinning up climbs and bursting from corners.
It tips the scales at a respectable 1790 grams, which is satisfactory considering its alloy composition and enthusiast-level price. Compared to the racier Cobalt 3 Wheelset, the Cobalt 2 weighs only 55 grams more, which isn't a bad tradeoff, considering you'll save precious loot for future upgrades to your bike. Something to note, the 24 spoke count is less than others in the XC/trail category, yet its stiffer twinpair design makes up for the fewer number of spokes.
Considering the 6061-T6 alloy rim sits at a relatively narrow 23 millimeters, we'd recommend running tires somewhere in the 2.2-inch range, although you could squeeze on a slightly larger tire for greater plushness at the risk of exposing more sidewall. The undrilled rim profile makes tubeless set-up a cinch without the need for rim tape. Another thing to note, Crank Brothers redesigned the hubs a couple of seasons back for greater reliability. Both hubs run on sealed cartridge bearings, with the rear hub having a three-pawl freehub with 21 points of engagement.
- Enthusiast-level XC wheels with striking spoke design
- Boost spacing and twinpair spokes increase stiffness
- Spokes place mass closer to center for acceleration
- 6061-T6 alloy rim for optimal strength-to-weight
- 23mm rim width optimally supports tires of 2.2in
- Undrilled rim profile for easier tubeless set-up
- Three-pawl freehub with 21 points of engagement
- Separately available SRAM XD freehub body