HTZ i40 is a purpose-built 27.5" eMTB wheel for riders who run a mullet setup with a wide 2.8" tire on the rear. HTZ wheels allow you to smash through rock gardens with confidence and not worry about if your wheels will make it through the ride. What makes HTZ wheels e-bike specific? An asymmetric rim design with 20% thicker walls, a heat-treated steel freehub body with six pawls of simultaneous engagement, oversized 17mm axle sleeves, double-stacked Enduro sealed bearings at the inboard end of the driver body and rotor mount heat sinks all create a bombproof wheelset specifically tailored to meet the demands of full-power eMTBs. Every component of our new HTZ wheels was meticulously designed to create the most dependable e-specific wheels on the market.
TCS (Tubeless Compatible System) is our industry-leading tubeless rim/tire system designed to international ETRTO and ISO standards.
6069 is the perfect aluminum alloy for bicycle rims due to its high tensile and fatigue strength, minimal weight, and excellent anti-corrosion properties.
Purpose-built e-bike components are specifically designed to prioritize durability, strength and longevity above all else.
Asymmetrically offset spoke holes create a stronger wheel by placing the holes more in line with the center of the hub and more evenly distributing spoke tension.
Spoke holes are drilled at an angle to match the natural spoke path between a rim and hub. Eliminates binding and lateral loading of the nipples to increase wheel durability.
Vertical support within the inner rim cavity that drastically increases the strength and rigidity of our toughest rims.
Installed between the rim and tubeless tape to prevent tape from sagging at each spoke hole and make tire inflation easier while also preventing puncture from a broken spoke.
Dissipates heat away from the hub shell and rotor up to 10% better on long descents. Cooler rotors increase braking power and increase rider confidence.
Introducing the freehub body to extreme heat hardens the steel to increase durability, eliminate gouging and prevent pawl socket failure under load.
6-pawl ratchet system that all engage simultaneously to evenly distribute torsional forces that are multiplied by a high-torque motor.
SPECIFICATIONS: (Max spoke tension range: 110-120KgF)
|Spoke Holes / Offset||
Inner Rim Width
|Rim ERD*||Weight**||Max Rider Weight||Part Number|
HTZ i40 x 27.5" wheel, 148 x 12mm, 32h, 6-Bolt, Shimano HG 11sp
|32-hole / 6mm||
Shimano HG 11spd
*Frequency hub dimensions can be found on our Resources and User Manuals page.
**Wheel weights include the Solid Strip, tubeless tape and valve installed on each wheel.
- Mark Weir, godfather of American enduro and daily e-bike thrasher
Wider rims will cause a tire to also have a wider width, with more air volume within the tire and a flatter tire tread profile than designed for. As a general rule of thumb, a 2mm increase or decrease of inner rim width will result in a tire section width increase or decrease of 1mm. For example, our Vigilante 2.5 tire has a tire section width of 60mm on a 30mm inner rim width, however it will have a tire section width of ~62.5mm on a 35mm inner rim width.
All aftermarket WTB wheels ship with our unique Solid Strip, tubeless tape and valves preinstalled on the wheel. This means that all WTB wheels are ready for tubeless-ready tires the moment they arrive in your garage!
All WTB wheels are sold with TCS Tubeless Tape preinstalled. If you need to replace it at any time, WTB recommends using tape that is 5mm wider than your inner rim width. For example, an i30 rim would require 35mm TCS Tubeless Tape.
All WTB alloy rims and wheels are best paired with a 34mm valve stem, which is preinstalled on every HTZ wheel.
Asymmetrical rims feature a "short" and "long" side. It is helpful to always mount both sides of the tire onto the rim on the "short side" of the rim. The short side of the rim provides the shortest distance between the rim leg/bead and the valley of the rim. Once the first tire bead is completely on the rim, it can be pulled over the rubber portion of the valve and positioned at the deepest part of the rim valley. The other side of the tire can then be installed onto the rim with the least amount of resistance.