The latest cassette enhancement comes to us through ARI Bike, but this one is a little different. Instead of yet another cog for the cassettes already served by the OneUp, Wolf Tooth, and more, ARI’s cog is meant for a different cassette – SRAM’s pricey XX model. If you’re stuck with an XX cassette but are hoping for a little more range, ARI’s upgrade cogs are worth a look.
Details after the jump.
Our Italian is a little rusty, but installation appears to be fairly straight forward. Once you remove the last cog alloy cog from the remaining steel cogs, simply install the ARI cog and the rest of cassette as usual.
Why offer a 36t cog which is the same as the standard cassette? We’ve heard reports of the largest cog wearing out (though not many), but it does offer a chance to keep an old cassette running if you’re in that situation. More likely are the 38 and 39t cogs which will appeal to anyone with an XX cassette that was disappointed that cogs like the OneUp are not compatible. Those looking for wider range gearing for a 1x setup that currently own an XX cassette might be looking at the answer.
Offered in a number of hard anodized colors, the cogs are machined from ERGAL 7075 T6 aluminum. Weights are a claimed 56g (32t), 70g (38t), and 77g (39t) and retail for € 70.00 or about $95.