borealis Keystone – Electric Bike⚡ 2024
2024 E-bike
Estimate price |
6,199$
Weight | 25.4 kg E-bike
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Travel Front 120mm -
Fork Manitou Mastodon Pro
-
Groupset GX Eagle Transmission -
Suspension Hardtail -
Motor Shimano 500W 85Nm mid-drive -
Battery Shimano BT-E8036 (630Wh) -
Drivetrain 1 × 12 Electronic -
Brakes SRAM G2 RS Hydraulic Disc
Sizing
Recommended size guide.
SM
157cm - 167cm
MD
165cm - 177cm
LG
175cm - 188cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Borealis Keystone Aluminum 15", 17", 19", 21"
Suspension Fork
Manitou Mastodon PRO EXT 120mm, 51mm offset
Drivetrain
Rear Derailleur
SRAM GX Eagle Transmission Derailleur
Shift Levers
SRAM AXS Pod Contoller Right Bridge w/ MMX Clamp for GX Eagle Transmission
Cassette
SRAM GX Eagle Transmission Cassette 10-52T
Crank
SRAM Eagle Transmission E-Bike MTB Chainring 104 BCD 36T Steel
Chain
SRAM GX Eagle Transmission Flattop Chain
Wheels
Front Hub
Borealis Gen 4 15x150 / 12x197
Rear Hub
Borealis Gen 4 15x150 / 12x197
Rims
Your choice of SunRingle Mulefüt SL - 26x80, 27.5x80, or 27.5x65
Spokes
Straight Gauge 2.0 Black
Tires
Your choice. All tire options are listed online.
Brakes
Brakes
SRAM G2 RS
Cockpit
Stem
Borealis 50mm or 70mm (Based on Supply)
Handlebar
Borealis Carbon
Grips
Ergon GP1
Headset
FSA w/ Star Nut
Seat
Saddle
WTB Volt Medium Steel
Seatpost
KS Lev Integra 125mm (SM, MD) / 150mm (LG, XL)
Motor & Battery
Motor
Shimano DU-EP800
Battery
Shimano BT-E8036 (630Wh)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.638 mm | 1.582 mm | 1.578 mm | 1.605 mm |
| Bottom Bracket Height | 295 mm | 295 mm | 295 mm | 295 mm |
| Front Center | 713 mm | 733 mm | 749 mm | 755 mm |
| Rake | 51 mm | 51 mm | 51 mm | 51 mm |
| Trail | 87 mm | 82 mm | 81 mm | 82 mm |
| Stack | 688 mm | 688 mm | 702 mm | 716 mm |
| Reach | 420 mm | 435 mm | 445 mm | 446 mm |
| Top Tube Length | 630 mm | 645 mm | 660 mm | 665 mm |
| Seat Tube Angle | 73 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 381 mm | 432 mm | 482 mm | 533 mm |
| Head Tube Angle | 69 ° | 69 ° | 69 ° | 69 ° |
| Head Tube Length | 160 mm | 160 mm | 175 mm | 190 mm |
| Chainstay Length | 480 mm | 480 mm | 480 mm | 480 mm |
| Wheelbase | 1187 mm | 1207 mm | 1223 mm | 1229 mm |
| Bottom Bracket Drop | 60 mm | 60 mm | 60 mm | 60 mm |
| Wheels | 27" | 27" | 27" | 27" |
| Rider Min Height | 157 cm | 165 cm | 175 cm | 185 cm |
| Rider Max Height | 167 cm | 177 cm | 188 cm | 195 cm |