Keystone – Electric Fat Bike⚡

5,899.00

Category

FEATURES

 

Highlights

  • Frame geometry provides responsive handling, offering maximum control for varying conditions in snow or sand.
  • Tire clearance up to 26x5” and 27.5x4.5”.
  • Lightweight, 6000 series aluminum frame comes with internally routed cables, 1-2 bottle cage mounts and lizard skin protection.

 

    • Color: Gunmetal Grey with Cobalt Blue Graphics

 

    • Weight: 56 lbs. as shown.

 

  • Standard features include:
      Shimano EP8 Drive Unit
      Shimano 630Wh Battery
      SRAM G2 RS brakes
      Mastodon Pro EXT 120mm suspension fork
      Carbon handlebars
      Dropper seat post
      Durable Sun Ringle Mulefüt Rims
      Your choice of tires.

BUILD SPECS

 

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 (Based on Supply)
Handlebar Borealis Carbon
Grips Ergon GP1
Saddle WTB Volt Medium Steel
Seat Collar Borealis Bolt-On
Seatpost KS Lev Integra 125mm (SM, MD) / 150mm (LG, XL)
Brakes SRAM G2 RS
Rotors SRAM HS2 200mm front / 180mm rear
Shifter SRAM AXS Pod Contoller 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 Your choice of SunRingle Mulefüt SL - 26x80, 27.5x80, or 27.5x65
Spokes Straight Gauge 2.0 Black
Hubs Borealis Gen 4 15x150 / 12x197
Tires Your choice. All tire options are listed online.
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.

 

FRAME SPECS

 

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
Susp Fork Travel 120mm
Fork Offset 51mm
Headset-Upper IS41
Headset-Lower IS52
Seatpost ø31.6mm
Seat Collar ø34.9mm
Dropper Compatible Internal - 125mm for SM & MD / 150mm for LG & XL
Front Derailleur Type Not Compatible
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 Reccomendation 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

 

GEOMETRY CHART

 

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
Wheelbase 1187 1207 1223 1229
Fork Offset 51 51 51 51

 

Assembly

 

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.  If you are not familiar with this level of assembly, we recommend having your local bike shop complete the assembly.

 

SHIPPING AND RETURNS

 

We do not accept shipments to PO boxes, and additional charges may apply for deliveries to Alaska and Hawaii. We offer flat rate shipping on all products through the most economical FedEx option.

Bikes, frames, and wheelsets typically ship via Ground, while small parts are shipped using 2-Day Express. Please contact us if any damage occurs during shipping.

Borealis provides a 30-day money-back guarantee. If you're not satisfied with your purchase, you can exchange the product or return it for a full refund, minus any transaction fees and shipping costs. Return shipping is the customer’s responsibility, and all returned or exchanged items must be in sellable condition.