FLUME EAGLE CUSTOM BUILD

Name: FLUME EAGLE CUSTOM BUILD
Brand: Borealis Fat Bikes
Price: 1499.0 USD
Availability: InStock

0% APR up to 24 months with Affirm! Financing Options Available at Checkout.

$1,499.00 USD

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Quantity

Size Chart

Shipping and Returns

Shipped via FedEx Ground.
PO boxes not accepted. Shipping discounts or exclusions only apply within the lower 48 states of the US.

Contact us if damage occurs during shipping. We will replace or discount products that are damaged depending on the nature of the damage.

LIMITED LIFETIME WARRANTY

LIMITED LIFETIME WARRANTY ON BICYCLE FRAMES & FORKS

FOR PURCHASES MADE ON OR AFTER JANUARY 1, 2023:

Original Owner
BOREALIS offers a LIMITED LIFETIME warranty to the original owner of each new BOREALIS bicycle, fork or frameset that the bicycle frame, fork or frameset when new is free of defective materials and workmanship.

Normal Conditions
The limited warranty is conditioned upon the bicycle being operated under normal conditions and use, and properly maintained.

Limitations
This limited warranty does not apply to paint/finish or components attached to the bicycle/fork/frameset such as rims, drive train, brakes, seat post, handlebar and stem, or any suspension related parts or components.

Paint/finish, components attached to the bicycle/frameset such as rims, drive train, brakes, seat post, handlebar and stem, or any suspension-related parts or components are covered under the limited one (1) year warranty.

Load Weight
The total cargo load for BOREALIS frames and forks is 300 pounds. The total cargo load includes the rider and any associated gear warn by the rider or attached to the frame or fork.

PURCHASES MADE BEFORE JANUARY 1, 2023 HAVE A 5-YEAR WARRANTY WITH THE SAME LIMITATIONS.

LIMITED ONE (1) YEAR WARRANTY ON COMPLETE BICYCLE
Subject to the following limitations, terms and conditions, BOREALIS warrants to the original owner of each new BOREALIS bicycle that this bicycle, when new, is free of defective materials and workmanship. This warranty shall expire one (1) year from the date of the original purchase from an authorized BOREALIS dealer and is conditioned upon the bicycle being operated under normal conditions and use, and properly maintained. This warranty is void if the bicycle was not purchased new or not properly assembled by an authorized BOREALIS dealer.
Click for Full Details Here

HIGHLIGHTS

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.

WHEELS & TIRES

All bikes come standard with tubes.
If you order rim tape with your Mulefut rims, we will tape the rims and install the tires with tubes.
HED Alloy and HED Carbon rims do not require rim tape for tubeless set up.
Tubes must be removed and tubeless valves installed for tubeless set up. We recommended to have this completed by a professional bicycle mechanic.

BUILD SPECS

	Eagle NX	Eagle GX	Eagle X01	Eagle XX1
Crankset	SRAM Eagle NX	SRAM Eagle GX	SRAM Eagle X01	SRAM Eagle XX1
Crank Arms	175mm Alloy	175 Alloy	175mm Carbon	175mm 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 XX1
Cassette	PG 1230 11-50	XG 1275 10-52	XG 1295 10-52	XG 1299 10-50 Gold
Shifters	SRAM Eagle NX	SRAM Eagle GX	SRAM Eagle X01	SRAM Eagle XX1
Brakes	SRAM - Select	SRAM - Select	SRAM - Select	SRAM - Select
Chain Ring	SRAM 30T X-Sync
Frame	Borealis Flume Alloy
Fork	Borealis Carbon Rigid Fork
Headset	FSA
Hubs	Borealis: Front 15×150 Rear 12×197
Rims	26" or 27.5" Sun Ringle Mulefut V2
Spokes	Borealis Straight Gauge
Nipples	Borealis Silver Brass
Tires	Your Choice
Bar	RaceFace Next SL Carbon 740x10mm OR Borealis Carbon (based on supply)
Stem	Borealis 50mm or 70mm
Post	RaceFace Next SL Carbon 31.6
Saddle	Borealis
Grips	Borealis
Bottom Bracket	SRAM DUB 100mm
DT/CS Protector	Lizard Skins
Weight	See weight calculator for estimated weight.

GEOMETRY CHART

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.

	S	M	L	XL
EFFECTIVE TOP TUBE	585 mm	610 mm	630 mm	650 mm
SEAT TUBE CENTER TO TOP	381 mm	432 mm	484 mm	534 mm
HEAD TUBE	105 mm	120 mm	135 mm	150 mm
SEAT TUBE ANGLE	73 deg	73 deg	73 deg	73 deg
HEAD TUBE ANGLE	70 deg	70 deg	70 deg	70 deg
STANDOVER HEIGHT	Varies based on wheel and tire size
CHAINSTAY	455 mm	455 mm	455 mm	455 mm
BB DROP	60 mm	60 mm	60 mm	60 mm
REACH	407 mm	423 mm	438 mm	451 mm
STACK	597 mm	611 mm	625 mm	639 mm

ASSEMBLY

If you choose "No Assembly" your bike will require complete assembly with an exception of the wheels.

If you choose "Assembled by Borealis", there is some assembly required upon receipt. Your bike will be completely assembled and tuned by Borealis, then partially disassembled for shipment. The remaining assembly will require installation of the rear derailleur, chain, fork, seat post, wheels, and handlebars. A multi-tool will be included with your order that has all tools necessary to assemble the bike, with the exception of a torque wrench. If you are not familiar with this level of assembly, we recommend having your local bike shop complete the assembly. Below is a video showing the remaining assembly once you receive the bike.

Assembly Video

OWNER'S MANUAL

Download Owner's Manual

COMPATIBILITY

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”

Flume

I purchased a Flume bicycle in 2021 during Covid when there was very few bicycles available. I never had a Borealis bicycle, but I’ve heard a lot of positive things about them, so I figured it was a safe bet to pull the trigger on. Man, I’m really pleased that I did. This is quite the ride. The gearing on this bicycle is absolutely phenomenal. You can pretty much climb any hill out there with this bad boy.
Aside from being very stylish, it’s also a very comfortable ride as well. I love the 5 inch tires. I for the life of me cannot figure out why anybody has suspension on one of these bicycles lol, it certainly doesn’t need it (I’m a recreational rider, with hard core MTB, front suspension is a good idea) If you’re thinking about purchasing one, I suggest you go for it. You definitely won’t be sorry.

What a great bike

I go way back to the early days of mountain biking, no suspension forks etc. This Flume reminds me of those old bikes. I bought it to ride on very sandy trails along a river and its great. It handles really well in tight spots and is a ton of fun. If I had one complaint it would be that the rim tapping Job by Borealis was less than good with neither tire holding air. I have had to redo both wheels myself.