Absolute Black ASM Gravel Oval ChainringThe world’s finest
oval ringOval chainrings work because a rider doesn’t produce power evenly through a pedal stroke, they maximize the part of the stroke where power is produced and minimize resistance where it isn’t. ...
Absolute Black SRAM 5x110 Oval Chainring Oval chainrings
will help you ride more like the pros by enhancing your pedal stroke, deliver power more smoothly to the rear wheel, and generate and maintain constant cadence. You will find yourself climbing ...
SRAM Red Yaw 10 Speed Chainring Whether you're
keen on keeping your drivetrain running clean and smooth by changing out worn rings, or prepping a new gear arrangement for the weekend's ride, the SRAM Red Yaw Chainrings are strategically machined ...
Together, chainrings and spiders are at the core of your bike’s drivetrain, helping transform the force you put into your pedals into energy that propels your bike down the road or trail. Chainrings, like the cogs that make up your cassette, are machined wheels of metal that have evenly-spaced teeth around the outer edge to engage your chain. Spiders, which typically have multiple arms, are what hold the chainring in place on your bike.
Most road bikes have two (and occasionally three) chainrings, with the smaller rings located inboard of the larger chainrings. Most modern mountain bikes are spec’d with just one chainring (known as a 1x set-up), though you will still encounter some riders using 2x and occasionally 3x systems, though the latter is increasingly rare.
Chainrings vary in size and shape. Most are round, but oval chainrings are also an option, purporting to offer more overall efficiency by helping minimize the deadspot in you pedal stroke. Teeth shape also varies, with 1x specific chainrings usually utilizes either a wave or thick-thin tooth profile to enhance chain retention, and lessen the chance of dropping your chain.
Size (indicated by the chainring’s number of teeth) typically run from 26t to 53t, though you find chainrings as small as 20t and as large as 60t in rare instances. The more teeth, and thus larger, your chainring is the harder it is to pedal, but the faster it propel your bike, while chainrings with fewer teeth are easier to pedal, but will not produce as much speed.
So for instance a Tour de France-level sprinter will almost always opt for a 53/39 chainring set-up, while your average weekend warrior road biker may be better suited to a 50/34 due to the ease of climbing it avails. (A 53/34 is typically not an option because the larger disparity in chainring size will produce less-than-optimal shifting performance.)
Another important consideration is chainring attachment, which can be direct mount or bolt on. If seeking the latter, you will need to know the specific number of bolt holes (usually 4 or 5) and also the bolt circle diameter (or BCD).
As you’ve surely guessed by now choosing the right chainrings and spiders can be a confusing process. But if you have any question, please call one of our JensonUSA Gear Advisors at 888-880-3811, who can help walk you through the decision making process and assure you get a compatible component that meets your specific cycling needs.