Wolf Tooth Shimano Direct Mount Oval Chainring

Think of an oval chainring as two chainrings in one. A major benefit of oval is how the shape of the chainring alters your gearing in two important phases of your pedal stroke by harnessing your body's natural biomechanics. Here's how it works. The area of the chainring with the larger diameter engages with the chain at the optimal point on the downstroke, which is what's known as the Power Zone. If you were to look at a clock, the Power Zone would be between 1 - 5 and 7 - 11. Conversely, the Recovery Zone – back to the clock face, between 11 - 1 and 5 - 7 – is the weakest part of the pedal stroke, when the oval maximizes your efficiency. A 34T oval chainring behaves like a 36T chainring when you want power, while behaving like a 32T chainring when you're climbing.

Wolf Tooth also engineered their oval chainrings to provide smoother, more efficient pedal rotation. This equates to better traction because of steadier torque on the rear wheel. With a Wolf Tooth oval chainring, you can harness more of your strength in the Power Zone, while having easier pedaling in the Recovery Zone.

Drop-Stop B

Tooth shape is nearly identical to Drop-Stop A, but has narrower teeth. Valley between teeth is deeper to accommodate larger rollers on Flattop chain. Outside faces of narrow and wide teeth touch chain to guide alignment.

Drop-Stop ST

Narrower teeth than Drop-Stop A. Wide teeth use Symmetric Trapezoidal (ST) profile to match extended inner edge on chain to create alignment (outside faces of wide teeth do not touch). Interaction of narrow teeth and chain are similar to Drop-Stop A and B.

Specifications:

• Weight:
  • 32T: 65 g
• Material: 7075-T6 aluminum

Compatibility:

• Shimano XTR M9100, XT M8100, and SLX M7100 series 12-speed cranksets
• Chainring offset matches the offset of Shimano chainrings to replicate the intended chainline for the crankset
• Drop-Stop B:
  • All 9, 10, and 11-speed Chains
  • 12-speed Chains:
    • Connex
    • Wipperman
    • Campagnolo
    • SRAM Eagle
    • SRAM Road and Transmission (T-type) Flattop chains
• Drop-Stop ST:
  • 12-speed Chains:
    • Shimano HG+
    • 12s KMC
    • Not compatible with all other chains