“Fat is where it’s at!” The Indigo Aurora represents the epitome of titanium adventure-ready fat tire bikes, tailored for extensive excursions through snow, sand, or gravel. Built for a 26” wheelset and accommodating tires up to 4.8” in width, this powerhouse excels in a variety of terrains. Its remarkably light titanium tubing ensures exceptional agility, and it’s available with either a carbon or titanium fork, making it ideal for snowy environments where rust is a concern.
Fat // Aurora
Features:
Tire Sizes
The Indigo Aurora is designed for 26” fat tires with a maximum width of 4.8”. All our wheel set ups come tubeless and preinstalled with Stan’s No Tubes sealant.
Straight 44mm Head Tube
The Indigo Aurora features a straight 44mm head tube, enhancing front-end stiffness and durability.
197×12 Rear Spacing and Thru Axles
Utilizing 197mm rear end spacing with 12mm thru axles, the Indigo Aurora reinforces frame rigidity. Its slider rear dropouts offer a wide range of rear wheel adjustability. Paired with disc brakes and large rotors, it delivers reliable braking power even in wet conditions.
Frame Tubing
The Indigo Aurora boasts large double-butted tubing, featuring a 44mm diameter down tube and 35mm seat and top tubes for optimal stiffness. The slight bend in the seat tube and the use of a substantial yoke in the chain stays allow for a snug fit of the fat rear tire.
Frame Specs:
- Frame: Indigo Bicycle Co. 3Al/2.5V double butted titanium fat bike frame
- Fork: Indigo Bicycle Co. fat bike carbon
- Bottom Bracket: 100mm, BSA
- Head Tube: 44mm straight, fits ZS44/EC44 headset
- Brake Mounting: Post Mount, built for 160 rotors
- Seat Post: 31.6mm, 34.9 clamp, internal routing for dropper post
- Rear Spacing: 197 x 12mm Fat (5″)
- Tire Clearance: 26 x 4.8″
- Additional specs: 2 bottle cage mounts, rear slider dropouts
- Shown with optional Titanium fork upgrade
- All frames are designed for wireless components
- Mechanical frame options are available
- Frame also available as single speed version
Build Kits:
- Frame: Indigo Bicycle Co. titanium fat bike
- Fork: Indigo Bicycle Co. fat carbon
- Shifters: SRAM GX Eagle AXS Controller
- Brakes: SRAM G2 R, post mount
- Crank: SRAM GX Eagle Fat Bike 5″, DUB, 1x
- Rear Derailleur: SRAM GX Eagle AXS 52t max
- Cassette: SRAM Eagle XG-1275, 10-50t or 10-52t
- Chain: SRAM GX 12 speed, 1x
- Bottom Bracket: SRAM BSA DUB, 100mm
- Rotors: SRAM HS2, Centerlock
- Handlebar: Truvativ Atmos 7K, alloy
- Stem: Truvativ Atmos 7K, alloy
- Seat post: Race Face Turbine, alloy
- Headset: Wolf Tooth Performance
- Wheels: Sun Ringle Mulefoot 80SL V2, 26”
- Tires: 45NRTH Husker Du, 26 x 4.8
- Saddle: WTB Volt
- Grips: WTB Tech Trail
$5,800
- Frame: Indigo Bicycle Co. titanium tat bike
- Fork: Indigo Bicycle Co. fat carbon
- Shifters: SRAM Eagle AXS Controller
- Brakes: SRAM G2 RS, post mount
- Crank: SRAM GX Eagle Fat Bike 5″, DUB, 1x
- Rear Derailleur: SRAM X01 Eagle AXS, 52t max
- Cassette: SRAM Eagle XG-1295, 10-50t or 10-52t
- Chain: SRAM X01 12 speed, 1x
- Bottom Bracket: SRAM BSA DUB, 100mm
- Rotors: SRAM HS2, Centerlock
- Handlebar: Truvativ Atmos 7K, alloy
- Stem: Truvativ Atmos 7K, alloy
- Seat post: Race Face Turbine, alloy
- Headset: Wolf Tooth Performance
- Wheels: Sun Ringle Mulefoot 80SL V2, 26”
- Tires: 45NRTH Husker Du, 26 x 4.8
- Saddle: WTB Volt
- Grips: WTB Tech Trail
$6,300
- Frame: Indigo Bicycle Co. titanium fat bike
- Fork: Indigo Bicycle Co. fat carbon
- Shifters: SRAM Eagle AXS Controller
- Brakes: SRAM G2 RSC, post mount
- Crank: SRAM GX Eagle Fat Bike 5″, DUB, 1x
- Rear Derailleur: SRAM XX1 Eagle AXS, 52t max
- Cassette: SRAM Eagle XG-1299, 10-50t or 10-52t
- Chain: SRAM XX1 12 speed, 1x
- Bottom Bracket: SRAM BSA DUB, 100mm
- Rotors: SRAM HS2, Centerlock
- Handlebar: Truvativ Atmos 7K, alloy
- Stem: Truvativ Atmos 7K, alloy
- Seat post: Wolf Tooth Resolve dropper
- Dropper Lever: Wolf Tooth ReMote
- Headset: Wolf Tooth Premium
- Wheels: Sun Ringle Mulefoot 80SL V2, 26”
- Tires: 45NRTH Husker Du, 26 x 4.8
- Saddle: WTB Volt
- Grips: WTB Tech Trail
$7,000
- Frame: Indigo Bicycle Co. titanium fat bike
- Fork: Indigo Bicycle Co. fat carbon
- Includes seat clamp
$2,900
Geometry:
Aurora Frame Geometry
| Size | S | M | L | XL |
| ST Length | 380 | 420 | 470 | 520 |
| TT Length | 585 | 610 | 630 | 645 |
| ST Angle | 76.2 | 76.2 | 76.2 | 76.2 |
| HT Angle | 70 | 70 | 70 | 70 |
| HT Length | 110 | 115 | 130 | 150 |
| CS Length | 450 | 450 | 450 | 450 |
| BB Drop | 62 | 62 | 62 | 62 |
| Stack | 617 | 622 | 635 | 655 |
| Reach | 450 | 473 | 489 | 498 |
| Standover | 750 | 772 | 801 | 835 |
* Made-to-measure frame options are available
