If you're in the market for some fat bike parts, then consider the Problem Solvers Direct Solvers Adapter 100mm Bbs 2X Drivetrains 34.9/31.8/28.6mm. They're great for commuter, fat tire, cyclecross, mountain, cross country, and dirt Jump. It's made of aluminum, and is the kind of durable, well-made gear that anyone can be confident and happy to add to their bike.
- Works for Shimano and SRAM High Direct Mount front derailleurs
- 34.9mm clamp with shims for 31.8 & 28.6
- 43.5mm offset for mountain double cranksets
- Front Derailleur Clamp: 28.6 (1-1/8") , 31.8 (1-1/4") , 34.9 (1-3/8") , High Direct Mount