You will not be allowed to compare more than 4 products at a time
View compare
Key Features
One Crankset. Every Rider. Every Trail.
Adjustable Crank Length
Easily switch between 145mm and 175mm crank lengths in 5mm increments to optimize your ride.
Lightweight & Durable
Precision-machined from 7075 aluminum, ensuring the perfect balance of strength and weight for any trail.
Universal Compatibility
Fits all modern Boost frames and works with standard 3-bolt direct mount chainrings for seamless integration.
Built to Get you to the Trail
A precision-engineered license plate quick-release designed for vehicles running rear-mounted bike racks. Clean in appearance, secure at speed, and effortless to use. Now you can focus on the road ahead, and leave the tickets in the rearview mirror.
R Theory Cycleworks
JX7 Adjustable Length Crankset
JX7 Adjustable Length Crankset
Regular price
$301.00 CAD
Sale price
Starting at
Unit price
per
$301.00 CAD
Regular price
Shipping calculated at checkout.
Introducing the JX7 Adjustable Length MTB Crankset by R Theory Cycleworks, the world’s first crankset that lets you fine-tune your crank length for the perfect fit. Designed to maximize power output, reduce joint strain, and enhance rider comfort, the JX7 unlocks new levels of performance whether you're grinding up climbs or hammering down descents. Built for riders who demand precision and adaptability, this revolutionary crankset lets you ride harder, longer, and smarter. Discover the JX7 and secure your set today.
Share
Explore the Standout Features of the JX7 Crankset
The JX7 Adjustable Length MTB Crankset is engineered for riders who demand versatility, strength, and precision. Whether you're fine-tuning your ride, maximizing efficiency, or sharing your bike with different riders, the JX7 adapts to your needs.
R&D Process
