01
The strongest NOBL rim, ever.
The Ethos HD registers off-the-charts strength, passing 190J of direct impact, no problem.
NOBL Ethos HD Erase Wheelset
Category Defining Strength
The Ethos HD is unapologetically burly. It's the strongest wheel NOBL has ever built. The heavy-duty layup and steel spokes shrug off impacts.
190
J+
Impact Strength
Alternative Produc
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Alpina Extralite spokes
Unique in the Ethos lineup, Ethos HD was designed with steel spokes, for durability under load. We chose tried-and-tested Alpina Extralites.
03
Erase Component Hubs
60-tooth ratchets and a titanium freehub ensure reliable engagement under the demanding torque of eMTBs and aggressive riders.
Ride Feel
Full Power Sending
Ethos HD wheels are for riders who want to go big, with confidence. 35mm internal width rims are built wide and shallow, to give a strong, supportive ride and optimized traction for heavier riders and bikes. With oversized 4mm-wide reinforced rim beads, the Ethos HD dissipates hard impacts with ease. Featuring steel spokes, they’re built with tried-and-tested Alpina Extralite double-butted spokes laced to J-bend Erase hubs.
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Rim Profile
The Engineering
Category-Defining Strength
The strongest NOBL rim ever made.
Available in 32h, its category-defining strength comes from a reinforced layup, wide rim beads and tapered sidewalls that disperse impact energy efficiently through the entire wheel system. Available in 29, 27.5” and mullet.
weight 29" | 27.5"
580 | 570
grams
inner width
35
mm
depth
23
mm
max pressure
40
psi
erd 29 | 27.5
590 | 552
mm
bead thickness upper | lower
4.0 | 3.5
mm
Build Spec · NOBL Ethos HD Erase Rear Wheel
1937 grams
Rims
Ethos HD 580g (32h, 29” & 27.5”)
Hubs
Erase, J-Bend, Titanium freehub, 60t ratchet
Hub Spacing
Boost & Super Boost
Brake Type
6-Bolt
Freehubs
XD, MS, & HG
Spokes
Alpina Extralite Spokes
Nipples
Sapim Alloy Black Secure Lock
Decals
White, Chrome Silver, Chrome Gold, & Black
Valves
NOBL Tubeless Valves Stock
nobl tech
wheel features
Optimized Torsional Flex +
Ethos rims are intentionally shallow for a more compliant ride feel. Reducing rim depth lowers overall torsional stiffness, allowing the wheel to absorb impacts while simultaneously introducing the right amount of lateral deflection, keeping you glued to your line, particularly on rough off-camber terrain. The result is a wheel that wants to go faster, providing precise tracking without feeling harsh.
Wide & Reinforced Rim Bead +
Ethos rims feature wider, flared rim beads that increase the contact surface area at the outer diameter of the rim. This broader interface helps distribute impact forces across a larger area rather than concentrating load at a single point, improving overall impact resistance and durability.
Taking it a step further, the wide, flared bead is reinforced with a flexible material specifically developed to improve resistance to off-axis, one-sided impacts. On the trail, impacts are rarely evenly distributed across both rim beads; one-sided strikes are far more common.
Concave Profile +
The Ethos lineup introduces a concave profile developed to optimize torsional stiffness. This profile allowed us to reduce rim depth to improve compliance and fine-tune support, particularly when paired with BERD spokes.
Flatline Valves +
NOBL Ethos Wheels feature a raised, flattened landing pad designed specifically for secure valve stem installation. This precise fit keeps the valve firmly in place, reducing movement and minimizing the risk of air leaks, keeping your tire pressure consistent.
Optimized Tubeless Fit +
For the best overall tubeless experience, the bead seat width and height, along with the drop channel diameter, are precisely engineered. Most riders will be able to install a tubeless-ready tire without the use of levers and inflate the tire fully without the use of a powerful air compressor.
Raw Finish +
All NOBL rims leave our high-end steel molds with a natural, raw finish without the need for post-production sanding and finishing. Producing a paintless carbon rim is more demanding, but the payoff is strength. Without post-production abrasion, the carbon fibres remain fully intact and encapsulated in resin, preserving their structural integrity. The result is a rim that’s not only cleaner in appearance, but inherently stronger.
erase components hubs
The Ethos HD wheels use Erase Components hubs, precision-manufactured in Belgium. The hubs are built using 7075-T6 aerospace-grade aluminum for the hub shells, axles, and end caps, delivering high strength while keeping weight low. They are paired with Grade 5 titanium freehub bodies to improve durability and resist sprocket wear without adding unnecessary mass. The 60-tooth ratchet drive system provides fast, reliable 6° engagement, using the full ratchet surface for strong power transfer and long-term durability—making these hubs especially well suited to the higher torque demands of e-bikes.
Alpina Extralite Spokes
The Ethos HD wheels use steel Alpina Extralite spokes that strike the ideal balance of weight, strength, and torsional flex for aggressive riding. With a double-butted 2.0/1.7/2.0 mm profile, they drop grams without compromising durability, and weigh just 5.7g at 260mm. During our tensile strength testing, Extralites outperformed comparable spokes thanks to Alpina’s use of higher-grade stainless steel.