SRAM Dub Spacer Guide
As this is information from SRAM, be sure to check with them for any questions and the latest information.
Get Your Spacers Straight: The Ultimate SRAM DUB BSA Spacer Chart!
Trying to figure out exactly how many millimeters of plastic stand between your crankset and total drivetrain perfection? Bottom bracket spacing can feel a bit like a game of bike Tetris, but don't sweat it—we've got your back. 🚴♂️
Whether you're building up a fresh frame or tuning up your current rig, here is the ultimate, no-nonsense cheat sheet for setting up your SRAM DUB BSA bottom bracket spacers perfectly every single time.
The SRAM DUB BSA Spacer Breakdown
| Frame Shell Interface & Width (mm) | Crankset Type | Outer Left Spacer (mm) | Inner Left Spacer (mm) | Inner Right Spacer (mm) | Outer Right Spacer (mm) |
| BSA (68) | MTB | — | 2.5 | 2.5 | 4.5 |
| BSA (68) | MTB WIDE | 3 | 2.5 | 2.5 | 7.5 |
| BSA (73) | MTB | — | — | — | 4.5 |
| BSA (73) | MTB WIDE | 3 | — | — | 7.5 |
| BSA (73) | Super Boost + | 4.5 | — | — | 9 |
| BSA (73) | Road - Wide | — | — | — | 3 |
| BSA (73 Ai) | MTB Ai | 2.5 | 2.5 | — | 10.5 |
| BSA (73 with Chain Guide) | MTB | — | — | Chain Guide | 2 |
| BSA (73 with Chain Guide) | MTB Wide | 3 | — | Chain Guide | 5 |
| BSA (73 with Chain Guide) | Super Boost + | 4.5 | — | Chain Guide | 6.5 |
| BSA (83) | DH | — | 2.5 | 2.5 | 4.5 |
| BSA (83 Ai) | MTB Ai | — | — | — | 5.5 |
| BSA (100) | Fat | 2 | 2.5 | 2.5 | 6 |
| BSA (68) | Road | — | — | — | 3 |
| BSA (68) | Road - Wide | 2.5 | — | — | 5.5 |
Pro-Tips for a Smooth, Creak-Free Setup:
- Know Your Sides: "Left" refers to your Non-Drive Side (the side with just the crank arm). "Right" refers to your Drive Side (where the chain and chainrings hang out).
- Mind the Chain Guide: If you are running a chain guide on a 73mm frame shell, keep an eye on those specific rows above. Your inner right spacer gets swapped out completely for the chain guide itself! 🛠️
- Measure Twice, Shred Once: If you are ever unsure about your exact frame shell width or crankset type, don't guess! Guessing leads to wonky chainlines and weird noises. Head over to www.santacruzbicycles.com for detailed product support documentation, or drop into your local authorized bike shop to get things spinning smoothly.
Happy trails! 🏔️