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We designed the GR7 Adjustable Length Crankset around one simple idea. One crankset that optimizes fit and pedaling efficiency for every rider, from XS to XL. It is built to fit both gravel and road frames, and designed for long days in the saddle where comfort, cadence, and efficiency matter more with every kilometer.

Most bikes come spec’d with cranks that are far too long for the average rider. Even a 5 mm difference in length can lead to wasted energy, reduced cadence efficiency, and unnecessary joint strain over time. The GR7 allows you to fine-tune your crank length to your specific body and riding style. It is a difference you will feel within the first few pedal strokes, whether you are rolling out from home, settling into steady tempo on pavement, or finding rhythm on endless back roads.

The GR7 uses an adjustable dovetail system paired with Grade 12.9 fasteners, giving you a range from 140 mm to 175 mm in 5 mm increments. For long-term durability, we chose a 7075 aluminum construction finished in a Type 3 hard anodized coating. At 884 g, the GR7 prioritizes strength, reliability, and precision adjustment over chasing the lowest possible weight. The biomechanical advantage of a perfect crank length delivers smoother cadence, improved comfort, and more usable power than a fixed-length lightweight crankset ever could.

We believe optimizing crank length is as essential as setting saddle height. Once you find your sweet spot with the GR7, there is no going back. You will hold speed more easily, climb with steadier power, and finish long rides feeling stronger than expected. Fine-tune your ride with the GR7 Adjustable Length Crankset, and you will wonder why you rode cranks that were too long for so long.

Chainring sold separately.

Tech Specs:

Intended Use: Gravel and Road Bikes
Bottom Bracket Compatibility: 24mm, Hollowtech
Chainring Interface: 3-bolt direct mount
Chainring Quantity: x1 by default, x2 compatible with SRAM Spider
Recommended Chainring Offset: 6 mm offset for x1 set ups
Crank Length: 140, 145, 150, 155, 160, 165, 170, and 175mm length in a single crankset
Q-Factor: 170mm
Material: 7075 Aluminum construction with 24mm chromoly steel axle
Preload System: Aluminum Pre-Load Collar
Frame Compatibility: Axle length designed for standard boost frames
Hardware: Grade 12.9 Fasteners
Weight: 884g without chainring

Frequently Asked Questions

What crank lengths are available on the GR7 Adjustable Crankset?

The GR7 allows riders to adjust crank length from 140mm to 175mm in 5mm increments, helping riders find their ideal fit.

Who is the GR7 designed for?

The GR7 is designed for gravel riders, road cyclists, endurance riders, bikepackers, and cyclists seeking improved comfort and efficiency.

Can crank length affect cycling comfort?

Yes. Proper crank length can improve pedaling mechanics, reduce strain on the hips and knees, and enhance long-distance comfort.

Why choose an adjustable crankset for gravel riding?

An adjustable crankset allows riders to experiment with different crank lengths without purchasing multiple cranksets, making bike fit optimization easier.

Is the GR7 suitable for endurance rides?

Absolutely. The GR7 is engineered for long-distance riding where comfort, cadence efficiency, and rider fit play a major role in overall performance.

What material is used in the GR7 crankset?

The GR7 is precision machined from high-strength 7075 aluminum and built for durability, reliability, and long-term performance.