While this makes for stronger, stiffer wheels, it also pushed the chain line out substantially, meaning you'll need a different offset chainring.Ĭhainline is one of the most overlooked aspects of the drivetrain because up to the late 2000s, mountain bike cranksets were pretty standardized. Is your rear drop out non-boost or boost? Maybe even super-boost? Boost rear hub spacing adds an additional six millimeters to the axle width of your rear dropouts and super boost adds 15mm. While there are pros and cons to each, what you need will be determined by your cranks, so double check before you buy. If too much builds up at the bottom of teeth, the chain may not seat properly and slip so look for provisions to clear gunk from the teeth.īecause the tooth profiles are designed to correspond to the alternating width of the links on your chain, 1x chainrings are only available in even numbers of teeth.Ĭhainrings either come in direct mount-varieties or four-bolt versions. With the tooth profiles interfacing so tightly with each link of the chain, grime and mud build-up can cause trouble. A narrow-wide chainring reduces the amount your chain can swing side to side as it comes onto the chainring preventing it from jumping ship. When you're riding over rough terrain, your chain will be bouncing to some degree even with a clutched derailleur. Have a gander at your chain, and you will see that the space between each link also alternates from wide to narrow, and these tooth profiles grip the chain, preventing it from bouncing off without introducing drag. As you can probably guess from the name, the tooth profiles alternate between narrow and wide to interact with the differing gaps in your chain, using teeth that alternate from what you'd expect on a standard chainring to squared-off broad profiles. The secret sauce of a chainring designed for 1x drivetrains is the tooth profiles. What to look for when buying 1x chainrings Plus once you have the right spider, there is no need to worry about crank compatibility or spacing, just pick the number of teeth you're after and pedal away. OneUp offers the Switch chainring in both round and oval options.

One of these solutions is the brand's Switch chainrings, aimed to reduce the costs of replacing worn parts, increase compatibility and simplify changing the ring itself.īreaking a direct-mount chainring into two components, the spider and the chainring itself, swapping the rings is a simple as turning the green bolt twice with a single 4mm Allen key and rotating the ring it takes less than one-minute - Wolf Tooth has a similar CAMO system. OneUp Components came about when two RaceFace engineers decided to jump ship and focus on creating ingenious solutions for mountain bikers. True customizability held back by derailleur and chain length

Chain guide for fathom 2