- In stock, ready to ship
- Free shipping on all orders $59+
104 BCD is the most common bolt pattern on double and triple cranksets and happens to be the first product ever made by Wolf Tooth Components. The Drop-Stop® tooth design is the best-performing and longest-lasting wide/narrow chainring on the market.
Available in multiple tooth profiles for optimal performance based on your chain type. Use Drop-Stop ST for use with Shimano 12-speed Hyperglide+ and 12spd KMC chains. Use Drop-Stop A for all 9, 10, and 11spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains. Drop-Stop B is optimized for SRAM 12-speed Transmission (T-type) and Road Flattop chains but is compatible with all chains that work with Drop-Stop A.
- Fits any 104 BCD crankset.
- Drop-Stop technology. On Wolf Tooth’s patented wide/narrow chainring, the broad 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.
- Alternating wide/narrow tooth patterns prevents chain derailment.
Compatibility:
- Fits any 104 BCD crankset.
- Designed to meet the requirements for E-bike use.
- Chainring Bolts: All tooth sizes require 1x bolts that are 6mm long with the exception to 30T rings which are threaded and require bolts that are 7-10mm long.
- 104 x 30T - use 10mm bolts.
- 104 x 32T, 34T, 36T, 38T use 6mm bolts, unless using a Bash ring.
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- Chainring bolt requirements for bashring
- 104 x 30T - 10mm bolts are required for use with the bashring.
- Other 104 BCD sizes - you will need 8mm bolts (stock size that comes on 3x cranksets holding the middle and big rings on).
- Chainring bolt requirements for bashring
- 32T 104 BCD chainrings work on many older 2x Shimano crankset (XT, SLX, or Deore).
- All sizes of 104 BCD chainrings are compatible with QUARQ power meters.
- The Wolf Tooth 30T is the only 104 BCD chainring made in the market, and it is compatible with Quarq.
- Drivetrains: 1x9, 1x10, 1x11 and 1x12 drivetrains
- If using a 9-speed drivetrain, use a 10-speed chain. It fits tighter for better chain retention.
Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right items the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!
Shipping
We currently offer both economy and expedited shipping options though FedEX and USPS.
Orders totaling over $59 are eligible to ship for free via an economy ground option of our choice.
Most bikes ship free within the continental US. Bike shipping to AK, HI, or PR is $250.
If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location.
RETURNS
Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.
Component & Gear Returns
Returns may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind.
Bike Returns
Returns or exchange requests for bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.
Return Shipping
Customers may choose to use our provided flat-rate return shipping label at $9, or choose a carrier of their choice to handle their product return.
The $9 flat rate label will be deducted from the refund issued for the return. You can either print this label after requesting a return from the Order History in your Account profile, or you can request that we email you the label.
For all other return shipping methods, please email us at sedona@thundermountainbikes.com after submitting your return request so that we can confirm the shipping information you should use to return your item(s).
REFUNDS
We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.
EXCEPTIONS
If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.
RETURN PROCESS
To request a return, please log in to your customer account by clicking the 
Profile icon in the top right of any page or visit account.thundermountainbikes.com.
1. In the Email field, enter your email address and click Continue.
2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.
3. Go back to the online store and enter a six-digit verification code to log in.
4. Find and click on the order that you want to submit a return for.
5. If your order has more than one item, select only the items you want to return.
6. Select a return reason and add a note for the store if needed.
7. Click Request Return.
Once your return request is approved, you will receive an email with shipping instructions and a return shipping label.
QUESTIONS ABOUT RETURNS?
If you have any questions concerning our return policy, please contact us at:
