Oval 96 mm BCD Chainrings for Shimano XT M8000 and SLX M7000
OVAL-M8K-32
Pairs well with
Machined in Minnesota
All Wolf Tooth chainrings come from the CNC machines here at Wolf Tooth HQ in Minnesota, USA. Machining chainrings in-house means we can control the entire production life cycle, from design, to prototypes, to machining, to fulfillment, all while maintaining meticulous quality control every step along the way.
Patented Wide/Narrow Tooth Profiles
Maximum chainring performance begins with chain alignment. Our patented Drop-Stop wide/narrow tooth profile ensures that the chain is centered on the chainring. This means best-in-class chain retention, extended life of the chainring, increased mud-shedding, and improved drivetrain efficiency.
Optimized For Your Chain
One Size Fits All means a compromise for all. Universal chainrings just don’t work when there are two fundamentally different chain designs. This is why we have two Drop-Stop chainring tooth profiles that are optimized for specific chain applications. Wolf Tooth chainrings provide maximum performance without compromise.
PowerTrac Elliptical
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, we call this the Power Zone. If you were to look at a clock, the Power Zone sits between 1-5 and 7-11. Conversely, the Recovery Zone sits 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, and a 32T chainring when you’re climbing.
This all adds up to a smoother, more efficient pedal stroke with even torque for better traction at 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.
Compatibility
- These rings fit on the Shimano XT M8000, SLX M7000, Deore M6000, or FC MT5100 1x or 2x cranksets.
- Use only the stock Shimano XT M8000 or SLX M7000 chainring bolts
- These CAN be mounted to the XTR 9000 series cranks, but you will have to use the bolt caps that come with that crankset and you will need to file roughly 1mm off the threaded boss on each bolt cap (they are a little too long and don't allow the ring to be tightened down)
- Wolf Tooth’s patented Drop-Stop® wide/narrow tooth profile for the ultimate chain retention and mud shedding ability
- If using a 9-speed drivetrain use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention).
- Provide a great chainline on most boost bikes. See this explanation for details.
- Drop-Stop A models will reduce the chainline (inward towards the frame) from the Shimano specified chainline for the crankset: 32T = -2mm
- Must use the stock chainring bolts. The Wolf Tooth chainring bolts are a different size.
- Ovality of 10% and timing of 112° after TDC (top dead center)
- Maximum diameter is that of a chainring 2t bigger than the size you order so be sure there is adequate chainstay clearance.
Recommendations
- If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur. Without these precautions, you may experience chaindrops and/or chainsuck.
- Recommend the use of a clutch style rear derailleur for the best chain security.
Tech Specs
Weight: 32t • 50g | 34t • 59g
Material: 7075-T6 aluminum
Made in the USA
Wolf Tooth is committed to provide the most precision components possible and has three different tooth profiles for optimal performance based on your chain type.
| Tooth Profile | |||
|---|---|---|---|
Tooth Profile |
Drop-Stop® B |
Drop-Stop® A |
Drop-Stop® ST |
| Chain Compatibility | |||
Chain Compatibility |
All 9s, 10s, and 11s Chains 12s Chains:
Not compatible with 12s Shimano HG+, 12s KMC, or 13s Campagnolo chains |
All 9s, 10s, and 11s Chains 12s Chains:
You can use Drop-Stop B when Drop-Stop A is not available* Not compatible with 12s SRAM Transmission (T-Type) and Road Flattop, 12s Shimano HG+, 12s KMC, 12s Campagnolo, or 13s Campagnolo chains |
12s Chains:
Not compatible with all other chains |
| Details | |||
Details |
 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 B Chainrings |
 The original Drop-Stop tooth profile. The wide teeth are wider than Drop-Stop B. Outside faces of narrow and wide teeth guide chain alignment. Drop-Stop A Chainrings |
 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. Drop-Stop ST Chainrings |
*We are in the process of migrating most Drop-Stop A to Drop-Stop B to make them compatible with SRAM Road and Transmission (T-type) Flattop chains.
WARNING Handling this product will expose you to chemicals, including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For further information go to www.P65Warnings.ca.gov.