104 BCD DROP-STOP A CHAINRING

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 on the market, with exceptional durability. 

• 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. This version suits all Drop-Stop A compatible chains - see below.
• 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.
• Chainring Bolt Requirements for Bashring: 104 x 30t - 10mm bolts are required for use with the bashring. Other 104 BCD sizes will need 8mm bolts - this is the stock size that comes on 3x cranksets holding the middle and big rings on. Wolf Tooth does not make these.
• 32t 104 BCD chainrings work on many older 2x Shimano cranksets (XT, SLX, or Deore).
• All sizes of 104 BCD chainrings are compatible with QUARQ power meters.
• Drivetrains: 1x9, 1x10, 1x11 and 1x12 drivetrains. Not compatible with SRAM Flattop AXS or Shimano HG12+ chains.
• If using a 9-speed drivetrain, use a 10-speed chain. It fits tighter for better chain retention.

DROP-STOP TECHNOLOGY

Wolf Tooth’s patented Drop-Stop® wide/narrow tooth profile delivers ultimate chain retention and mud shedding ability. See below for Drop-Stop A compatibility.

RECOMMENDATIONS

• We 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.