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2023 Borealis

FLUME EAGLE CUSTOM BUILD

A 26″ aluminum frame rigid fat bike with upper mid-range components and sram mechanical disc brakes.
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Manufacturer Price

$1,499
FrameAluminum
SuspensionRigid
ForkCarbon
Wheels26″ Aluminum
GroupsetNX
BrakesSRAM Mechanical Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
FLUME EAGLE CUSTOM BUILD
Other Fat bikes
Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Flume model range

View Comparison
Sizing
SM

5'2" – 5'6"

MD

5'5" – 5'10"

LG

5'9" – 6'3"

XL

6'0" – 6'6"

🐐 Estimated

Rider Fit Notes

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Geometry
Specs
Build
Frame

Borealis Flume Alloy

Fork

Borealis Carbon Rigid Fork

Bottom Bracket

SRAM DUB 100mm

Headset

FSA

Stem

Borealis 50mm or 70mm

Handlebar

RaceFace Next SL Carbon 740x10mm OR Borealis Carbon (based on supply)

Saddle

Borealis

Seatpost

RaceFace Next SL Carbon 31.6

TypeRigid

Grips

Borealis

Groupset
Rear Derailleur

RD ENX 1 x 12

Crank

SRAM Eagle NX

Shifters

SRAM Eagle NX

Cassette

PG 1230 11-50

Chain

KMC X12

Brakes

SRAM - Select

TypeSRAM Mechanical Disc

Wheels
Rims

26" or 27.5" Sun Ringle Mulefut V2

Spokes

Borealis Straight Gauge

Front Hub

Borealis: Front 15×150 Rear 12×197

Rear Hub

Borealis: Front 15×150 Rear 12×197

Tires

Your Choice

Rider Notes
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First added September 30

Last updated October 14

Not listed for 958 days