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Depending upon the type of bike, a classic drivetrain system may consist of at least a crankset, chain, rear cassette and a road groupsets. Simpler one-by drivetrains feature a single chainring and a rear cassette with a mechanism for changing gears. Internally geared hubs don't even need a bicycle derailleur since the shifting mechanism is built into the hub. If you're here, you're looking for a wholesale road groupsets that can accommodate your chain and the number of chainrings (for a front derailleur), and that can be mounted on your particular frame.



Most derailleurs are made of a polymer and alloy composite but for those who want to reduce their bike's overall weight, carbon fiber models are available. Once you've determined your derailleur specifications, you can start searching Alibaba.com for the one that fits your needs and budget. When a derailleur is properly adjusted and maintained, you can expect clean, crisp shifting – even in rugged conditions, which leads to a long life for your derailleur. Familiarizing yourself with basic concepts, as well as the differences between manufacturers and standards are fundamental when shopping for a road groupsets upgrade or replacement.



Maybe you're looking to turn your single-speed into a geared bike so that you suffer a little less on your rides. In that case, you'll need more than just a road groupsets. Not to worry though, Alibaba.com has the parts for that too, including a bicycle freewheel and hub. Or maybe you just want to eliminate the chain chafing caused by a worn-out bicycle derailleur. It's an easy fix when you know where to look for wholesale bike components.



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