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The Borealis Keystone features a lightweight 6000 series aluminum frame with responsive geometry for maximum control in snow or sand conditions.
The Borealis Keystone features a lightweight 6000 series aluminum frame with responsive geometry for maximum control in snow or sand conditions.
Borealis

Borealis Keystone

$6,199.00
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Preorder

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritized (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or dispatch to you — it often never even hits the stock room shelves!

Prelaunch

With Prelaunch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Preorders.

So, instead, you can submit your email address for the item you are interested in, and we will email you as soon as stock arrives in the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indicative purposes only and can change at any time without notice.

The dates we provide are based on information given by our suppliers. Whenever we get updated information from our suppliers we will endeavor to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for dispatch to you or collection via Click & Collect on Undetermined

Borealis Keystone

Brand:Borealis

Code:BOREALIS KEYSTONE

The Borealis Keystone is built with a lightweight, 6000 series aluminum frame that includes internally routed cables, 1-2 bottle cage mounts, and lizard skin protection.

Features:

  • Responsive handling for varying conditions in snow or sand
  • Tire clearance up to 26x12.7cm (5") and 27.5x11.43cm (4.5")
  • Lightweight 6000 series aluminum frame
  • Internally routed cables
  • 1-2 bottle cage mounts
  • Lizard skin protection
Technical Information
  • Frame
    Borealis Keystone Aluminum 15", 17", 19", 21"
  • Drive Unit
    Shimano DU-EP800
  • Battery
    Shimano BT-E8036 (630Wh)
  • Display
    Shimano SC-EM800
  • Assist Switch
    Shimano SW-EM800L
  • Speed Sensor
    Shimano EWSS300L540A
  • Fork
    Manitou Mastodon PRO EXT 120mm, 51mm offset
  • Headset
    FSA w/ Star Nut
  • Stem
    Borealis 50mm or 70mm
  • Handlebar
    Borealis Carbon
  • Grips
    Ergon GP1
  • Saddle
    WTB Volt Medium Steel
  • Seat Collar
    Borealis Bolt-On, ø34.9mm
  • Seatpost
    KS Lev Integra 125mm (SM, MD) / 150mm (LG, XL), ø31.6mm
  • Brakes
    SRAM G2 RS
  • Rotors
    SRAM HS2 200mm front / 180mm rear
  • Shifter
    SRAM AXS Pod Controller Right Bridge w/ MMX Clamp for GX Eagle Transmission
  • Derailleur
    SRAM GX Eagle Transmission Derailleur
  • Cassette
    SRAM GX Eagle Transmission Cassette 10-52T
  • Chain
    SRAM GX Eagle Transmission Flattop Chain
  • Crank Arms
    Samox 170mm
  • Chainring Mount
    Samox 104 BCD for 75mm chainline
  • Chainring
    SRAM Eagle Transmission E-Bike MTB Chainring 104 BCD 36T Steel
  • Rims
    SunRingle Mulefüt SL - 26x80, 27.5x80, or 27.5x65
  • Spokes
    Straight Gauge 2.0 Black
  • Hubs
    Borealis Gen 4 15x150 / 12x197
  • Included
    Shimano ECE80042 Battery Charger, AXS Power Pack, Kickstand, UDH Hanger, Key for battery release, Borealis Rear Thru Axle, Remote Battery Charging Adapter
  • Weight
    Size Medium w/ Mulefut 27.5x80 & Terrene Yippee Ki Yay 4.3" Tires: 56 lbs.
  • Wheel / Tire Size
    26 x 3.8–5.0" on up to a 100mm rim / 27.5 x 2.8-4.5 on up to a 82mm rim / 29 x 2.25–3.0
  • Suspension Fork Travel
    120mm
  • Fork Offset
    51mm
  • Headset-Upper
    IS41
  • Headset-Lower
    IS52
  • Dropper Compatible
    Internal - 125mm for SM & MD / 150mm for LG & XL
  • Bottom Bracket
    Shimano EP8
  • Crankset (Max Ring)
    Chainline 75mm / 1x (38t)
  • Rear Brake (Rotor)
    74mm post (160–180mm)
  • Rear Spacing
    197 x 12mm thru-axle
  • Rear Axle
    ø12 x 222L, TP= 1.0, TL = 16
  • Derailleur Hanger
    SRAM UDH
  • Bottle Mount
    Small & Medium: 1 (downtube) / Large & XL: 2 (downtube & seatube)
  • Rear Rack Recommendation
    Old Man Mountain Divide Fat
  • Rear Rack Mounts, Upper
    Yes
  • Axle to Crown
    531mm
  • Steerer Tube Size
    28.6mm
  • Steerer Style
    Tapered
  • Crown Seat Diameter
    40mm
Sizing Information

Geometry

Measurement Small 15" Medium 17" Large 19" X-Large 21"
Effective Top Tube 630 645 660 665
Seat Tube Center to Top 381 432 482 533
Head Tube Length 160 160 175 190
Head Tube Angle 69° 69° 69° 69°
Seat Tube Angle 73° 73° 73° 73°
Chainstay Length 480 480 480 480
BB Drop 60 60 60 60
Reach 420 435 445 446
Stack 688 688 702 716
Standover Height varies based on wheel and tire size varies based on wheel and tire size varies based on wheel and tire size varies based on wheel and tire size
Wheelbase 1187 1207 1223 1229
Fork Offset 51 51 51 51
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