The Wolf Tooth 107 Elliptical BCD Chainring for SRAM was designed to fit 107 BCD Spiders for SRAM cranks. It has a special tooth shape with a deeper valley between the teeth, perfect for accommodating the larger rollers of Flattop chains, while being elliptical ensures it delivers greater power and traction, maximising your pedalling efficiency.
Optimised for drop bar bikes, the Drop-Stop B profile of the teeth is narrower that the classic A profile and will work with all 9, 10 and 11 speed chains, as well as 12 speed SRAM Eagle, Campagnolo®, KMC and SRAM Flattop AXS Chains.
Meanwhile, this chainring's use of PowerTrac EllipticalTM technology ensures the larger diameter section engages the chain at the most powerful point of your downstroke, while the smaller diameter section does the same at the weakest point of the pedal stoke, maximising its efficiency. For that reason, a PowerTrac EllipticalTM ring matches the power of the next biggest circular ring in both parts of the stroke.
Even better, thanks to the fact that Wolf Tooth's PTE rings are 10% less ovalised than equivalent chainrings from other brands, with less aggressive timing, your pedal stroke will feel as smooth as with a round chain ring. This ensures even power transfer, leading to improved traction on technical climbs.