FRONT HUB
KillHill Centerlock
TUNE’s lightness and color at the center of your wheels. Why not start with the front hub and rethink the foundation of your beloved bike?
¥31,680
View front hub → View all hubs →
LIGHTWEIGHT COMPONENTS
FROM THE BLACK FOREST.
TUNE / BLACK FOREST, GERMANY
The joy of riding,
in every small part.
The contours of machined aluminum. Vibrant anodized finishes. An astonishing lightness when held in your hand. Hailing from Germany's Black Forest, TUNE is a parts brand that makes even the time spent building your bike enjoyable.
It all began in 1988. Driven by a desire to ride to the mountains on a lighter bike, Uli Pfahl's ingenuity gave rise to a unique approach to manufacturing. From the foundation of your bike to the components around the handlebars. Make your next upgrade with TUNE.
THE HEART OF TUNE
The words "lightweight" and "high precision" come to life in the factory. TUNE values both the process of creating a form and the process of verifying it.

01 / IN-HOUSE MACHINING
Alloy materials are precisely machined on lathes and milling machines in our own factory. 3D designs are converted into CNC machine movements, and by selecting the right tools and machining methods, each part is crafted to perfection.
Deciding what to keep and what to machine away. This meticulous process creates the lightness and contours that define TUNE.
02 / CHECKED ONE BY ONE
The areas inside the hub that hold the bearings require strict dimensional control. In addition to checks during machining, TUNE inspects each hub body individually after machining to ensure it falls within the specified dimensional tolerances.
We pay close attention not only to the visible finish but also to the parts that are hidden once assembled. That is our commitment to precision.

03 / TESTING & DEVELOPMENT
TUNE development includes fatigue life testing, where prototype wheels are subjected to repeated loads, as well as impact testing and torque fatigue testing related to drive and braking. The results are applied to the next design.
Advancing weight reduction through the cycle of design and verification. The craftsmanship that goes beyond the numbers is another reason to choose TUNE.
Learn more about testing →START WITH YOUR NEXT UPGRADE
FRONT HUB
TUNE’s lightness and color at the center of your wheels. Why not start with the front hub and rethink the foundation of your beloved bike?
¥31,680
View front hub → View all hubs →
Science, Technology, Engineering, and Mathematics
A machined silhouette that brings a smile every time you see it. Choose the length and color to make the area around your handle uniquely yours.
¥41,800
View stem → Choose a stem color →
SEATPOST
A clean look all the way under the saddle. Check that the diameter fits your frame, and bring the TUNE aesthetic to your seat setup as well.
¥34,100
View seatposts → View all seatposts →
QUICK RELEASE
Quick release, a cornerstone of TUNE’s history. Start with replacing small parts to achieve a lighter build and a coordinated color scheme.
¥19,580
View Quick Release → Choose a quick-release color →MAKE IT YOURS
Whether it's understated black and silver or eye-catching blue and Froggy Green. Match your hub and stem, or use small clamps as a pop of color. TUNE lets you enjoy the creative process of giving your bike a look that is uniquely yours.
Available colors, dimensions, and specifications vary by product. Please check each product page.
TUNE × GORILLA SPUN
Once you've chosen your color, what kind of wheels will you choose? Circles offers wheel-building consultations for TUNE hubs using Circles' hand-built "GORILLA SPUN" wheels.
We'll consider the roads you ride, your tires, your cargo, and your current bike, and help you choose rims and spokes to match your needs.
CHOOSE WITH CONFIDENCE
Hub axle, brake, and freehub body dimensions, as well as stem and seatpost dimensions. Please tell us your bike model and current specifications.
Commuting, touring, or sport riding. We'll help you choose the parts you need based on how you usually ride.
Colors to match your frame and colors to use as accents. First, browse the lineup in each category.
We also offer replacement parts for bearings, freehub bodies, and more. Providing the model name, year, and a photo will help us identify the correct parts more quickly.
THE TUNE COLLECTION
From the hub that supports rotation to tiny, fingertip-sized parts. Choose your favorite colors and the features you need to create a ride that’s uniquely yours.
01 / HUBS
Put your will at the center of the wheel.
Weight, color, combinations. From the front and rear hubs, the creation of your next wheel begins.
Choose a hub
02 / STEMS
At the center of your gaze, the beauty of precision machining.
The one piece that sets the impression around the steering wheel. Choose the length and color to match your car.
Choose a stem
03 / SEATPOSTS
Neat and tidy, all the way under the saddle.
A slim silhouette and vibrant colors. Please choose the diameter that best suits your frame.
Choose a seatpost
04 / SEATPOST CLAMPS
A small touch of color can transform a vehicle.
Whether you match it to the color of the frame or deliberately choose a contrasting accent color.
Choose a sheet clamp
05 / QUICK RELEASES
The origin of enjoying lightness.
Parts that carry on TUNE's history. A thoughtful detail for your pedals.
Choose quick release
06 / SERVICE PARTS
Enjoy what you love for a long time.
Bearings, free bodies, replacement parts. Parts to support your favorite TUNE.
Search for replacement parts
07 / BOTTLES & CAGES
Add a playful touch to your running gear.
A small tool that catches your eye every time you use it. Make your bottle setup uniquely yours, too.
Choose bottle accessoriesFrom hubs to cockpits and replacement parts. Click here to see our current product lineup.
From product selection and specification checks to wheel builds using TUNE hubs and inquiries about replacement parts. Please let us know your vehicle model, intended use, and any products you are interested in.