Direct Mount for Cannondale Hollowgram – CX and road offset
CDL40X
Pairs well with
Cannondale makes one of the finest CX and Road cranksets in the bike world. With this beautifully machined chainring, we aimed to make a direct mount ring that could measure up to the sweetness of these cranksets. These chainrings have a reverse dish for the perfect chainline on your CX/gravel/road bike.
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Direct mount for Cannondale Hollowgram
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Drop-Stop technology. On Wolf Tooth’s patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction.
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Alternating wide/narrow tooth pattern prevents chain derailment
Compatibility
- This direct mount chainring will replace your existing spider/chainring on Road and CX Cannondale Hollowgram SI & SISL cranks.
- These are NOT compatible with Cannondale mountain bike cranksets because the chainline will be too far off from optimal.
- For 1x9, 1x10, 1x11 and 1x12 drivetrains (including SRAM Eagle)
- 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).
- Chainline 44mm
Recommendations
- Recommend the use of a clutch style rear derailleur for the best chain security
- 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
Related Products
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Tanpan - allows Shimano mountain bike rear derailleurs to be used with Shimano road shifters
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RoadLink - allows for wide range cassettes to be used with Shimano road rear derailleurs
Tech Specs
Weight: 38t • 100g | 40t • 110g | 42t • 117g
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+, 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.