Easton EC90 ALX: Ultra-Light and Durable Gravel Crankset

For the gravel community in Boulder, Colorado, the arrival of the Easton EC90 ALX crankset isn’t just another product launch—it’s a direct answer to the brutal demands of the Front Range. Whether you are grinding up the steep pitches of the Flatirons or navigating the washboard sections of the foothills, the balance between weight and sheer durability is the eternal struggle. When Easton claims to have a crankset that is the market-leader in durability although matching the weight of SRAM Red, they are speaking directly to the riders who push their gear to the limit on the high-altitude terrain of Northern Colorado.

Breaking Down the EC90 ALX: Durability Meets Weight

The core appeal of the EC90 ALX lies in its ability to solve the “weight vs. Strength” paradox. Traditionally, a rider had to choose: a lightweight setup that might perceive fragile under heavy torque, or a robust “bomb-proof” system that added significant grams to the bike. Easton has disrupted this with a set that weighs just 419g (for a 170mm crank and 40t chainring), putting it on par with the high-end SRAM Red XPLR. However, the real story is the strength; Easton reports that the EC90 ALX tested 27% stronger than its closest competitor, the SRAM Red XPLR.

This level of durability is achieved through a sophisticated combination of carbon lay-up, specialized resin, and a proprietary “insert binding process.” For the local rider, this means more confidence when powering through chunky gravel or dealing with the unpredictable impacts of off-road riding. The inclusion of a lifetime warranty further reinforces the brand’s confidence in this new benchmark for off-road drivetrain durability.

Versatility and Fitment for the Modern Gravel Rig

One of the most impressive aspects of the EC90 ALX is its adaptability. Easton has ensured that this crankset can integrate into almost any setup, regardless of the bottom bracket or groupset being used. It’s available in a wide array of lengths—160, 165, 170, 172.5, and 175mm—which mirrors the offerings of Shimano Dura-Ace and SRAM Red, though it lacks the 167.25mm option found in those top-tier groupsets.

The introduction of the new Lite-Spline spindle is a key technical highlight. By utilizing shorter spines, the cranks sit closer to the bike frame, which not only creates a sleeker aesthetic but provides critical added heel clearance—a detail that becomes apparent during tight technical maneuvers on narrow trails. Easton has provided full 1x and 2x chainring configurations designed to be compatible with both Shimano 12s chain shapes and SRAM 12s flattop chains, making it a truly universal upgrade for those who mix and match components.

Expanding the Ecosystem: The EC90 ALX Wheelset

While the crankset handles the power delivery, the broader EC90 ALX line extends to the wheelset, designed specifically for the increasing speeds of gravel racing. As seen in recent high-profile events like the Unbound 200, where winners averaged nearly 20mph, aerodynamics are no longer just for road racing. The EC90 ALX wheels feature a 36mm rim depth, a precise balance intended to provide an aerodynamic advantage without the instability or weight penalties of deeper rims.

These wheels utilize a hookless tubeless ready carbon rim with a 24mm internal width and 30mm external width. While some critics, such as those from Bicycling, suggest a 24mm internal width may be narrow for the widest modern gravel tires, the set remains highly effective for all-road and light gravel applications. With Sapim CX-Ray bladed spokes and Easton Vault center-lock hubs offering 60-point engagement, the wheelset is built for the same “speed and experience” philosophy as the crankset. Much like the cranks, these wheels are backed by a lifetime warranty that explicitly includes crashes, a rarity in the high-end carbon market.

The Integration of Power and Momentum

When you combine the EC90 ALX crankset with the matching wheelset, the result is a cohesive system optimized for the “all-road” philosophy. The synergy between the 419g crankset and the 1495g wheelset (XDR version) allows a rider to maintain a competitive weight profile while gaining a massive boost in durability. This is particularly relevant for those who frequent the rugged terrain around Boulder, where the equipment must withstand constant vibration and high-torque climbs without sacrificing the efficiency needed for fast, flat descents.

Integrating these components allows for a highly customized ride. A rider can choose the specific crank length and chainring configuration to match their biomechanics and the specific grade of the trails they frequent, while the aerodynamic profile of the wheels helps maintain momentum against the headwinds often encountered on the open plains of Colorado.

Local Resource Guide for Boulder Gravel Riders

Given my background in analyzing high-performance gear and its real-world application, it’s clear that upgrading to a system like the EC90 ALX requires more than just a purchase; it requires precision installation and tuning to ensure the “benchmark” durability is actually realized. If you are integrating these components into your rig in the Boulder area, here are the three types of local professionals you should engage:

Certified Master Mechanics

Look for technicians who specialize in carbon-to-metal interfaces and have specific experience with “Lite-Spline” or similar proprietary spindle systems. Because the EC90 ALX uses a unique insert binding process and specific torque requirements for carbon components, you need a mechanic who uses calibrated digital torque wrenches to avoid over-compression, which can compromise the lifetime warranty.

Professional Bike Fitters

Since the EC90 ALX offers an expansive range of lengths (from 160mm to 175mm), don’t guess your size. Seek out fitters who leverage dynamic 3D motion capture technology. They can determine if a shorter crank length will improve your heel clearance and hip angle during steep climbs, maximizing the efficiency of the new drivetrain.

Wheel Alignment and Tubeless Specialists

For those pairing the cranks with the EC90 ALX wheelset, find a specialist experienced in hookless rim technology. Hookless rims require specific tire compatibility and precise pressure management to avoid “burping” or tire failure. Ensure your provider understands the specific pressure curves for 24mm internal widths on gravel tires.

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