A new wheelset that makes your road bike faster out of corners. A wider bar that gives you more control on the trail. Fresh brake pads that bring back full stopping power after long descents - bike parts define how your bike feels and what it can do. The right upgrade gets more out of every ride, whether you're chasing speed, dialing in comfort, or replacing worn components. At BIKE24, you'll find a huge range of parts for MTB, road, gravel, e-bike, and city riding.
Build the bike you want, one component at a time - whether you're refining your current setup or starting a full build from scratch.
Not every upgrade does the same thing. Some make you faster, others make long rides easier on your body - and some simply bring your bike back to peak condition. Weight savings, aerodynamic gains, and new tech like electronic shifting all add up over time. It comes down to what you want from your ride.
Want to turn more of your effort into speed on the road or trail? Your drivetrain, shifting, and tires all determine how efficiently power reaches the ground. A stiffer crank transfers every pedal stroke with minimal loss, a precise derailleur shifts exactly when you need it - and the right tire balances grip and rolling resistance for your terrain.
Lighter components make a huge difference. Start with the wheels - they affect how quickly your bike accelerates and reacts to every pedal stroke. Lighter bars, seatposts, cranks, and cassettes make your bike feel quicker and more agile.
After a few hours in the saddle, every millimeter at the contact points counts. Saddles, seatposts, bars, grips, pedals, and forks all affect how much vibration and pressure reaches you. Get your saddle right, dial in your bar position, and choose materials that damp road buzz - and you'll stay stronger on longer rides.
New tech changes what your bike can do. Electronic groupsets like Shimano Di2 or SRAM AXS, switching from 2x to 1x, or going tubeless - systematic upgrades improve precision, efficiency, or puncture resistance. Over time, those gains add up. Just make sure your shifting, brakes, wheels, and tires work together - your bike performs best as a system.
Your riding evolves - your bike should too. Moving from all-road to gravel, commuting to bikepacking, or trail riding to enduro all demand different setups. The right tires, wheels, suspension, and cockpit let you build your bike around how and where you actually ride.
The right choice depends on your bike, your riding style, and what components you already have. On a road bike, weight and shifting precision matter most. On an MTB, durability and suspension tuning take priority. On an e-bike, components need to handle higher loads.
Use the "cycling discipline" filter on category pages, or choose one of our bike type subcategories. This narrows the selection down to MTB parts, road bike parts, gravel components, e-bike parts, and more - so you can quickly find what you're looking for.
Use our filter menu to sort parts by groupset - for example Shimano Dura-Ace, SRAM GX Eagle, or Magura MT. This makes it easy to see which components work with your current setup. Filters by mounting standards and model names in the product title help you pinpoint the exact part.
You can see the weight in the product data sheet on each product page. It's listed as either "manufacturer's stated weight" or “weighed by us”.
Bar tape, brake pads, and chain are the classic wear parts on a road bike and need regular replacement. Wheels are the most popular choice for upgrades, along with switching to tubeless or running wider tires - and a full groupset swap, for example from Shimano 105 to Ultegra. All three improve weight, efficiency, and ride feel.
Brake pads, chains, cassettes, and tires are the classic wear parts on an MTB and should be replaced regularly. Grips and saddle are often swapped for more comfort. For upgrades, suspension components are the biggest game changers: a more capable fork, tuned damping, stronger wheels, or more powerful brakes improve control, traction, and confidence on the trail - and can be dialed in to match your riding style and terrain.
Many components on an e-bike can be replaced just like on a non-motorized bike - tires, brake pads, chain, grips, and saddle. For e-bike-specific parts like wheels and drivetrain components, make sure they're rated for higher loads and torque. Batteries can be swapped on most systems, but always make sure to use models approved by the manufacturer. We'd recommend visiting a workshop for motor or sensor systems as software calibration is often required.
The final turn of the torque wrench. The pop of a tire seating tubeless. The first pedal stroke on a freshly built bike - few things feel better than finishing a bike build. To help you get there faster, you'll find over 90,000 bike parts ready to ship at BIKE24. From Shimano and SRAM to Continental and Fox Factory - top brands for drivetrain, tires, suspension, and every other component your build needs. Our DIY guides walk you through installation step by step, and our team of experienced cyclists is here to help with any compatibility questions. Fast shipping means less waiting and more riding.
You'll also find tools and bike maintenance products to go with your new parts - so your bike stays in top shape long after the upgrade.
