If you’ve been following Atherton Bikes, you already know they don’t do anything halfway. The Welsh brand built its reputation on 3D-printed titanium frame lugs, bespoke geometry, and a build process that is clearly obsessive. Now they’ve taken that same additive manufacturing philosophy and methodical sizing strategy and applied it to a crankset. The result? The Atherton A.GR.TI.
The A.GR.TI cranks are one of the most over-engineered, unapologetically expensive cranksets in mountain biking right now, but there’s a reason for the hype, and we’ll get into that. Despite the staggering price, they still can’t hold a candle to the THM Clavicula XC at €1,499,00 (~$1,735.21 USD).
Atherton Bikes
View the 2 images of this gallery on the
original article
What Are the Atherton A.GR.TI Cranks?
The A.GR.TI cranks are a three-piece system – two separate titanium crank arms bonded to an aluminum spindle – built using the same 3D printers Atherton uses for their frame lugs. The inside of each arm features a ribbed, hollow lattice structure engineered to maximize stiffness while shedding grams. The outer faces are closed to shed mud, and the pedal thread area is left solid for durability where it counts. This isn’t a pretty piece of CNC’d titanium dressed up in the trappings of luxury. It’s a genuinely different approach to how a crankarm can be made.
Atherton A.GR.TI Crank Specs at a Glance
Price: Starting at £845 (~$1,128 USD)
Atherton Bikes
Atherton Bikes
- Material: Aerospace-grade 3D-printed titanium (Ti-23)
- System: 3-piece (two crank arms + aluminum spindle)
- Lengths: 150–175mm in 2.5mm increments
- Spindle diameter: 28.99mm (SRAM DUB) or 30mm
- Chainring mount: SRAM 8-bolt
- Chainline options: 52mm or 55mm
- Finishes: Raw, Burnished (+£30), Tumbled (+£50)
- Weight: 506g (165mm x 52mm configuration)
- Safety rating: EFBE and ISO tested to Category 5 downhill racing classification
- Available now at athertonbikes.com
Who Are These For?
The modularity here is one of the most practical features Atherton quietly snuck in: the three-piece design lets you swap crank arms between your trail and downhill bikes without investing in two complete cranksets. For a certain type of rider, that could start to make financial sense.
The crank length ranges from 150 to 175mm in 2.5mm steps, which is also pretty impressive and on-brand with how they approach frame sizing. Most brands offer three or four lengths. Atherton gives you eleven. If you’ve ever felt like your cranks are 2.5mm too long, this is literally the product made for you.
Atherton Bikes
The Price Question
Let’s not dance around it. At $1,128, the Atherton A.GR.TI is one of the most expensive cranksets ever offered to mountain bikers. That’s a number that will end conversations quickly. But Atherton has always built for a specific type of customer, one who’s already bought into the sport and wants something that will do the job, and continue to do the job in perpetuity. Someone who already appreciates what 3D-printed titanium can do, and wants every component to match the ethos of the frame it’s bolted to.
Will these cranks make you faster? Probably not. Will they outlast every carbon crankset you’ve ever owned? Almost certainly. Are they super interesting? Without question.
Atherton Bikes
Bottom Line
The Atherton A.GR.TI cranks are a niche product by design, and they wear that identity proudly. If you’re searching for the best premium titanium MTB cranks of 2025, these belong in the conversation. They’re not for everyone. But for the rider who wants a crankset built with the same uncompromising standard as their frame, the A.GR.TI delivers exactly what it promises.