We’ve featured Absolute Black before when they launched their lightweight two-piece disc brake rotors for Centerlock and 6-bolt, as well as some prototype flat pedals.
Now, he’s got some mean looking 1x single chainrings on deck for SRAM, Shimano and FSA cranksets. Above is the direct replacement SRAM rings for modern 2×10 cranksets, including X0/X9/X7 and replaces the entire spider and chainrings with a single piece…which should drop quite a bit of weight.
According to founder Marcin, these are “almost final prototypes – non finished, without polish and anodization. The 32T weights 51g which makes it the lightest one out there! Material I use is best in class 7075 Txxx – it’s a special treatment which makes that alloy incredibly strong.”
Retail should be around $60, and they’ll likely start out through a Kickstarter campaign. We’ll let you know when it goes live.
He’s also working on 1x single chainrings for FSA and news for XX1 below…
From Marcin: “I have also made a chainring for 2009-2010 era FSA K-Force Light carbon cranks. It’s a weird BCD – 94mm x4 holes- but a lot of people still have them. FSA does only three chainrings in 39, 41 and 42T so there was no option for 1×10/11 or singlespeed. So I have made 33T for that crank. It weighs 33g. I have personally used it for a year on my singlespeed and it’s still like new! This one is £45 as it’s a micro batch. I have few left from the production run.”
Perhaps more exciting is the forthcoming XX1-style chainring for 104BCD cranks, which will fit current FSA and many Shimano cranksets. Marcin says a 34T is just 44g, about 12g lighter than an original XX1 ring and should cost about a third less. It’s a good way to minimize the financial impact of upgrading to a 1×11 system…now you’ll just need the rear shifter, derailleur and cassette. Well, and wheels with the Driver Body or, at minimum, a new freehub.