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. This chainring started it all for us. The Drop-Stop® tooth design is the best performing and longest lasting wide/narrow chainrings on the market. 

• Fits any 104 BCD crankset.
• 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.
• Alternating wide/narrow tooth pattern 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 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.
    
  • 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). Wolf Tooth does not make these.
      
• 104 BCD 32T chainrings work on many older 2x Shimano crankset (XT, SLX, or Deore).
  
• All sizes of 104 BCD chainrings are compatible with QUARQ power meters.
  
• Drop-Stop A tooth profile is compatible with all 9, 10, and 11spd chain and 12 spd SRAM Eagle, Connex, and Wipperman chain. Drop-Stop A is NOT compatible with SRAM Transmission (T-type) 12spd, SRAM Road Flattop 12spd, or Shimano Hyperglide+ 12spd chain.
  
• If using a 9-speed drivetrain, use a 10-speed chain. It fits tighter for better chain retention.