Direct Mount Chainrings for Easton Cinch
ERC40-FT
Pairs well with
Direct Mount Chainrings for Easton Cinch
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.
hese chainrings are for Easton or Race Face Cinch cranks. Updated tooth profile works with SRAM Flattop chain. The Wolf Tooth Cinch chainrings feature our patented Drop-Stop® design for the best wear life, chain retention, and mud clearance.
Compatibility
- Easton Cinch™ cranksets including EC90SL
- Works with SRAM Flattop chain
- Wolf Tooth’s patented Drop-Stop® wide/narrow tooth profile for the ultimate chain retention and mud shedding ability
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.
Tech Specs
Weight: 38t • 80g | 40t • 91g | 42t • 96g | 44t • 113g | 46t • 129g | 48t • 139g
Material: 7075-T6 aluminum
Made in the USA Patent and trademark information
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.