Borealis Flume Alloy SRAM Eagle 12 speed B.Y.O.B. Ready to Ship
- Borealis Bikes Canada
- Regular price
- Sale price
- Unit price
B.Y.O.B. Build Your Own Bike
With premium frame quality and only the best components, the Borealis Flume offers the best value on the market. This expedition-ready fatty mirrors the Crestone geometry, but does so in lightweight, 6000-series aluminum. Up mountains, down glaciers, and across deserts - the Flume is ready for action. There are all kinds of alloy fat bikes on the market, but none with the Flume’s purebred heritage and durability.
One of the lightest alloy fat bike on the market.
- Standard features include: SRAM Eagle NX 12-Speed drivetrain, SRAM Level T brakes, rigid carbon fork, carbon handlebars, carbon seat post, durable Sun Ringle Mulefüt rims and your choice of tires.
- Frame geometry provides responsive handling, offering maximum control for varying conditions in snow or sand.
- Tire clearance up to 26x5” and 27.5x4.5”.
- Compatibility for 100-120mm of suspension travel for increased comfort and control.
- Lightweight, 6000-series aluminum frame comes with 2-3 bottle cage mounts, rear rack mounts on seat stays and Lizard Skin protectors on both the down tube and drive-side chain stay.
- Rockshox Bluto Fork tire size limitations: 26x5” or 27.5x4”
- Mastodon Pro EXT Fork tire size limitations: 26x5” or 27.5x4.5”
- Borealis Rigid Carbon Fork tire size limitations: 26x5” or 27.5x4.5”
- Dually 29x45 and 27.5x45 Rims – Max tire width: 3”
- All rims 65mm to 85mm wide are compatible with tire widths of 3.8” to 5”
- HED Carbon 100mm Rims – Max tire width of 4.8”
Eagle 12 speed Flume Specs (1×12)
|Eagle NX||Eagle GX||Eagle XO||Eagle XX|
|Crankset||SRAM Eagle NX||SRAM Eagle GX||SRAM Eagle XO||SRAM Eagle XX|
|Crank Arms||175mm Alloy||175 Alloy||175mm Carbon||175 Carbon|
|Rear Derailleur||RD ENX 1 x 12||RD EGX 1 x 12||RD EXO 1 x 12||RD EXX 1 x 12|
|Chain||KMC X12||KMC X12||KMC X12||SRAM X12 Gold|
|Cassette||PG 1230 11-50||XG 1275 10-50||XG 1295 10-50||XG 1299 10-50 Gold|
|Shifters||SRAM ENX||SRAM EGX||SRAM EXO||SRAM EXX|
|Brakes||SRAM - Select||SRAM - Select||SRAM - Select||SRAM - Select|
|Chain Ring||30 Tooth|
|Fork||Borealis Rigid Fork or RL Bluto, Mastodon Pro Ext.|
|Hubs||Borealis: Front 15×150 Rear 12×197|
|Nipples||Wheelsmith Silver Brass|
|Post||Borealis Carbon Seatpost (31.6mm)|
|Bottom Bracket||SRAM DUB 100mm|
|DT/CS Protector||Lizard Skins|
|Weight||See weight calculator for exact weight.|
RIDER HEIGHT RECOMMENDATIONS
Based on our research, riders at the heights below will usually take the corresponding frame size. If you’re at a transitional height that spans two sizes, look at the geometry chart to get the Stack and Reach you like based on other bikes you are comfortable.
GEOMETRY & SIZING
Borealis offers four frame designs with unique fit and geometry to suit your every Fat Bike need. Begin by taking a rough size approximation on the chart below that is based on height, then select the corresponding bike with your fit needs by using the geometry chart further below. We recommend a similar fit to you mountain bike, so grab a measuring tape and dial it in.
|EFFECTIVE TOP TUBE||23.02 in||24.02 in||24.8 in||25.59 in||585 mm||610 mm||630 mm||650 mm|
|SEAT TUBE CENTER TO TOP||15 in||17.01 in||19.06 in||21.02 in||381 mm||432 mm||484 mm||534 mm|
|HEAD TUBE||4.13 in||4.72 in||5.31 in||5.91 in||105 mm||120 mm||135 mm||150 mm|
|SEAT TUBE ANGLE||73 deg||73 deg||73 deg||73 deg||73 deg||73 deg||73 deg||73 deg|
|HEAD TUBE ANGLE||70 deg||70 deg||70 deg||70 deg||70 deg||70 deg||70 deg||70 deg|
|STANDOVER HEIGHT||Due to various rim and tire options stand over is not identified.|
|CHAINSTAY||17.91 in||17.91 in||17.91 in||17.91 in||455 mm||455 mm||455 mm||455 mm|
|BB DROP||2.36 in||2.36 in||2.36 in||2.36 in||60 mm||60 mm||60 mm||60 mm|
|REACH||16.04 in||16.65 in||17.22 in||17.76 in||407.3 mm||423 mm||437.5 mm||451.2 mm|
|STACK||23.50 in||24.05 in||24.61 in||25.16 in||597 mm||610.9 mm||625 mm||639.1 mm|
Please take note of the following: Shipping and handling charges do NOT apply to the NWT, Yukon, Nunavut and Labrador, remote areas or areas that do not have year round road access. For these area, please contact us. Photos DO NOT reflect actual build, please refer to specifications located below for more information. Some items may be changed to same quality components depending on availability. Assembled by Borealis (85% build), some assembly required upon receipt. No assembly, requires complete build.
Bike will usually ship within 5-7 business days depending on time of the year.
All sales are final, no returns. All frames are covered by a 5 year warranty and crash replacement program.
SAFETY NOTICE: Please note our bikes are designed for off road use and do not include safety reflectors which may be required for on road riding in your location. If you require legal safety reflectors please contact your local bike dealer.
All directions of the Manufacturer or Retailer must be followed when using any product purchased through Borealis Bikes Canada. Specifically, bikes must be assembled by a qualified bike mechanic to ensure correct assembly. Borealis Bikes Canada will not be responsible for damage or injury caused by improper assembly of products purchased through our website or other website (Amazon, Craig's List, e-Bay, Google, BikeExchange, etc.) or if directions and instructions for proper use are not followed. You may not qualify for any applicable Manufacturer or Retailer warranty if you do not follow their policies for assembly and use. Please consult the Manufacturer or Retailer’s policies prior to assembly and use of your product.