Cycling is full of opportunities to upgrade your bike. From wheels and handlebars to saddles and tyres, there are plenty of ways to fine-tune a bike to suit your riding. But sometimes, it’s the smaller components that can make a build really stand out.
That’s where Gemini Composites comes in.
Based in Barcelona, Gemini Composites specialises in high-performance carbon components designed with one clear goal: combining low weight and stiffness with innovative design. Now available from Merlin Cycles, Gemini brings something a little different to the drivetrain upgrade market, with its range of carbon chainrings and jockey wheels.
Carbon where it counts
Carbon fibre has long been associated with high-end cycling, thanks to its excellent strength-to-weight characteristics. While it’s perhaps most familiar in frames and wheels, carbon can also offer advantages when used in smaller drivetrain components.
Gemini takes this approach to components that are often overlooked when building or upgrading a bike.
The result is a range designed for riders who enjoy paying attention to the details — whether that means building an ultra-lightweight race bike, improving a gravel setup or simply adding a premium finishing touch to an existing build.
Rigel Carbon Chainrings
At the heart of the Gemini range are the Rigel carbon chainrings.
Designed for performance-focused road and gravel bikes, Rigel combines carbon construction with a precision-machined drivetrain interface. The focus is on creating a chainring that is lightweight while retaining the stiffness required for efficient power transfer.
For riders chasing every possible gram, a chainring might seem like an unlikely place to look for weight savings. However, drivetrain components are an area where reducing rotating and moving mass can contribute to an overall lightweight build.
Rigel chainrings are available for a range of popular Shimano and SRAM drivetrain configurations, making them suitable for everything from lightweight road builds to fast gravel machines.
And, of course, there’s another reason to consider a carbon chainring: it looks fantastic. The distinctive carbon finish adds a high-end feel to a bike and can complement other carbon components throughout the build.
Ögle Aero Carbon Jockey Wheels
Gemini’s approach to lightweight drivetrain components continues at the rear derailleur with its Ögle Aero carbon jockey wheels.
These jockey wheels feature a forged-carbon construction and are designed around a distinctive enclosed, spokeless profile. Behind the eye-catching appearance is a focus on reducing weight and optimising the pulley system within the existing derailleur cage.
Gemini also uses hybrid bearings featuring ceramic balls, designed to provide smooth rotation and low friction.
One particularly interesting aspect of the Ögle design is that the larger pulley wheels are intended to maximise tooth size within the available derailleur cage space. This means riders can upgrade the pulley system without necessarily needing to replace the entire cage.
Available for selected Shimano and SRAM applications, Ögle offers an opportunity to add a genuinely distinctive component to a high-end drivetrain.
Small upgrades, big attention to detail
One of the most appealing things about premium cycling components is that upgrading isn’t always about replacing something that is worn out or broken.
Sometimes it’s about refinement.
A carbon chainring or set of jockey wheels might be a relatively small part of the overall bike, but components like these can be the finishing touches that turn a great build into something truly individual.
For weight-conscious riders, Gemini’s carbon construction is naturally appealing. For performance-focused riders, the emphasis on stiffness, bearing quality and drivetrain design adds another reason to take a closer look. And for anyone who simply appreciates beautifully engineered bike components, the distinctive appearance is hard to miss.
Discover Gemini Composites at Merlin Cycles
Gemini Composites offers a fresh take on drivetrain upgrades, combining modern carbon construction with distinctive designs and a clear focus on performance.
Whether you’re building a lightweight road bike, upgrading a gravel machine or looking for those final premium touches for your dream build, Gemini’s Rigel carbon chainrings and Ögle Aero carbon jockey wheels are well worth a closer look.
Explore the Gemini Composites range at Merlin Cycles and discover what a little carbon can add to your drivetrain.
