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Ibis S35 27.5in Logo Carbon Boost Wheelset

$1,298.95

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  • Black, 15x110/12x148, XD
    $1,298.95

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S35 27.5in Logo Carbon Boost Wheelset

Ibis has been advocating for wide mountain bike rims for years now, well before their popularity boomed with riders. They understood that a wider rim gives better sidewall support to the tire, which means riders can get away with running lower tire pressures for better traction and control. Their wheels have seen a lot of success, but Ibis isn't one to rest on their laurels so they recently went back to the drawing board to improve upon their already awesome wheels. The S35 27.5in Logo Carbon Boost Wheelset is the fruit of their labor, designed to provide riders with enduro-worthy strength at a weight that's competitive with most lighter-duty carbon trail wheels. Not only that, but Ibis managed to improve ride quality and impact-resistance along the way—all good things for the discerning rider and racer.

When Ibis set out to improve upon their previous wheels, one of the main goals was to make them even lighter and stronger, which was no easy task. To achieve this Ibis knew they had to reduce the height of their beadwalls in order to make them less likely to bend and break. Stan's NoTubes already uses this technology in their existing rims, so Ibis collaborated with them to use their patented Bead Socket Technology (BST), which not only reduces the beadwall heights for improved vertical compliance and ride quality, but also makes it easier to mount tires and provides a more secure tubeless setup.

Additionally, the S35 rims are drilled asymmetrically, which improves the bracing angle of the spokes and allows both sides of the wheel have nearly equal spoke tension, resulting in a stronger and more durable wheelset. Ibis also changed up their carbon construction, using a material they call Toughened Hybrid Carbon. The name comes from the toughened resin formula they use in the beadwall, which allows it to flex and better shrug off impacts. Considering that many carbon rim failures happen during single-sided impacts with the beadwall, we're glad to see Ibis take note and beef up their rims in this area.

The S35 wheels are available in two different configurations. This particular version is laced up with Ibis' own Logo hubs. While their I9 wheels are built with the best components money can buy, this Logo wheelset delivers an almost identical ride feel at a similar weight for hundreds of dollars less. The Ibis hubs are built to be tough, and feature high quality Enduro sealed bearings for longevity. They're laced to the rim using Sapim's strongest and lightest double-butted J-bend spoke, which means it's easy to find a replacement at any local bike shop if you break a spoke and are in a pinch to find one. The wheels are backed by a seven year warranty for peace of mind, as well as a low cost accident replacement program if something downright awful happens to your bike.

If you're wondering how the S35's compare to the S28 wheels, it simply comes down to the internal width of the rim, with the S35's being designed for wider tires in the 2.35 - 2.8in range, and the S28's optimized for more traditional tire widths.

  • Ibis' updates their carbon wheels to be even lighter and tougher
  • Designed to provide enduro-worthy strength at trail weights
  • Stan's BST technology improves ride quality and impact resistance
  • Asymmetric rim allows equal spoke tension for greater durability
  • Toughened Hybrid Carbon makes the beadwall more resistant to impacts
  • 35mm internal width gives optimal support to 2.3 - 2.8in tires
  • Ibis Logo hubs are reliable and help keep the cost down
  • No proprietary parts means it's easy to find replacements in a pinch
  • Item #IBSB04V

Rim Material
Toughened Hybrid Carbon
Wheel Size
27.5in
Tire Type
tubeless ready
Rim Depth
18.3mm
Rim Width
[internal] 35mm, [external] 41mm
Brake Compatibility
6-bolt disc
Hubs
Ibis Logo
Front Axle
15 x 110mm Boost
Rear Axle
12 x 148mm Boost
Spokes
Sapim D-Light double butted
Spoke Count
32 / 32
Claimed Weight
1640g
Recommended Use
enduro, trail
Manufacturer Warranty
7 years

Tech Specs

What do you think about this product?

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>Rating: 2

Ibis and Aluminum Nipples

I bought a set of the 742s before these came out. Second season on them and all the aluminum nipples started failing while that bike would be literally sitting still inside my house. Ibis wont warranty spokes or nipples, so they just tell you to rebuild them. So just be aware that Ibis expects you to rebuild these wheels every other season or at least once within the first two season so you can swap out the aluminum nipples for brass ones...its unfortunate i used to like Ibis and rave about their wheels.