Specs
- Available in black anodized and raw (unpolished) silver
- 28 teeth to 52 teeth in 2 tooth increments
- Boost and non-Boost versions
- Standard/non-boost rings have a 3mm offset (inward)
- Boost rings are flat (so 3mm outward of our standard/non-boost rings)
- Standard/non-Boost rings can be flipped so the offset shifts outward to give you 3mm more outward offset than our Boost rings
- This set up is is used on M30 cranks for a 55mm chainline needed for SRAM Transmission, Rohloff hubs, and Super Boost 157mm spaced hubs
- Chainlines:
|
Mountain
M30
|
Adventure
A30 |
Road
R30 |
Gravel
G30
|
Crank arm
|
M30
Mountain arms |
R30
Road arms |
R30
Road arms |
M30
Mountain arms
|
Spindle
|
M30
Mountain spindle |
M30
Mountain spindle |
R30
Road spindle |
R30
Road spindle
|
1x chainline (3mm offset ring, facing inward)
|
49mm |
49mm |
46.5mm |
46.5mm
|
1x Boost chainline
(flat ring)
|
52mm |
52mm |
49.5mm |
49.5mm
|
1x chainline
(3mm offset flipped outward)
|
*55mm |
*55mm |
52.5mm |
52.5mm
|
2x chainline (between rings)
|
47.5mm |
47.5mm |
45mm |
45mm
|
*55mm chainline for SRAM Transmission, Rohloff hubs, Super Boost 157mm spaced hubs