I recently set up my Wahoo Kickr trainer to use with a bike equipped with a SRAM Red drivetrain, specifically for structured threshold workouts in Erg mode. Previously, I had a Shimano cassette installed on the trainer for use with bikes running Shimano GRX drivetrains. Rather than swapping to a SRAM Red cassette'which is costly and incompatible with my Shimano-equipped bikes'I opted to try the Zwift Cog for greater flexibility.
The Zwift Cog proved to be a smart choice. It was easy to install, significantly more affordable than a new cassette, and offers micro-adjustability by rotating the cog to fine-tune chain alignment. For basic workouts, it performs reliably and meets expectations.
That said, there are a few caveats. The cog's tooth profile isn't optimized for SRAM flat-top chains, which could potentially accelerate chain wear. However, I maintain my chains regularly and am comfortable replacing them as needed. Noise levels are acceptable'not silent, but not disruptive either. One limitation is that I can't use the Zwift Click with my trainer, so I may end up selling it.
Overall, the Zwift Cog is a great solution for anyone looking to use multiple bikes on a single indoor trainer with minimal hassle. While it's not a perfect long-term solution'especially for SRAM flat-top chains'it's a versatile and cost-effective option for most training setups.
Hey, this provides a little something you might not have had on your own *if you have put in the work*. That is the takeaway. I use it occasionally for specific training workouts that I know will simulate race efforts. I definitely use it on race day. What matters most is the work you have put into your base training so that when the time for a marginal gain oriented product like this comes, you have both variables working in your favor. Slathering this on as some sort of substitute or supplement for training is probably going to leave you disappointed and slimy feeling.
I've ridden for 25+ years and never used chamois butter or creams, always thinking that I just needed to "toughen up" my skin around the more sensitive contact points. This worked for many years with only a slight bit of discomfort on longer (50+ miles) rides with 2000+ft or more of climbing. A few years ago, my schedule became more hectic and limited my daylight saddle time. With post-work riding hours reduced, but not wanting to reduce my fitness, I bought a smart trainer and a Zwift subscription to ride indoors at night. I quickly found that any rides over 30 miles on the trainer started to "rub me the wrong way"! I knew that I had to try a butter or cream, but didn't like the thought of "slathering up" before I rode. I then found this product. It does everything I needed and nothing I didn't. This product goes on dry and provides more than enough "slip" to make Zwift rides over 50 miles and 3000+ft of elevation gain more manageable and little to no soreness to date. I'm a believer now and will continue to buy this product for use both inside and out!
