As tested by XC Silver World Champion Marek Konwa, the Absolute Black Hollowgram DM Ring answers the call of those with Cannondale Hollowgram cranks, looking to lighten up things up and tidy things up with a 1X setup. As Hollowgram spiderless chainrings offer the most seamless 1x9/10/11 drivetrain arrangement, the Absolute Black DM Ring can augment things even further with its lightweight, stiff construct, and clean good-looks. The chainring's specific offset permits a straighter chainline compared to "flat" ring offerings, while the narrow-wide tooth profile retains the chain snugly, allowing you to end things with your chainkeeper.
Absolute Black Hollowgram DM Ring Features:
Replaces the existing chainring and spider on Cannondale Hollowgram cranks
Narrow wide tooth profile keeps the chain snug, allowing you to leave the chainguide behind
This purchase was to rid myself of the front dual chainring and keep a 10 speed rear cassette. I rode my normal 10 mile loop with steep climbs and rough downhills and had no issues with the single chainring. I bought a 32 tooth which made some of my climbs a bit challenging, but I didn't loose any speed on the flats. A 32 would be perfect if you are running an 11 speed rear cassette. I like that Absolute Black included mounting instructions to make sure you do the job correctly. However, you will need a Cannondale specialty tool ($40) to remove the stock spider and install this chainring.
I had used a few other brands (Hope, Wolftooth, RaceFace) prior to splurging on this one. I had been happy with every narrow-wide option that I'd used, but went this way because I had determined I no longer required a bash ring and had finally settled on the # of teeth I wanted. You do require a special tool to remove the spider from hollowgram cranks so bank on either buying that tool or paying a shop to do it. I've been a Cannondale owner for many years so tend to just buy the tools at the same time I get the bike as I figure I'll eventually need them.
This piece of kit is absolutely beautiful to hold and look at... it's light, it works, it improves chainline vs other options (which is how I easily rationalized the extra expense) and does look pretty slick installed.
PROS: Easy To Install, Lightweight, Durable, Attractive Design
CONS: Somewhat Expensive, Can't Use A Bashguard, Special Tool Required
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