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2021 Polygon

MT Bromo N8

A 29″ aluminum frame full suspension enduro e-bike with high-end components.

Manufacturer Price

$5,999
FrameAluminum
SuspensionFull, 160 / 160mm
ForkFox Performance Float 38
ShockFox Float X2 Performance
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetXT
MotorShimano 500W 85Nm mid-drive
BatteryShimano 504Wh
BrakesShimano XT Hydraulic Disc
SeatpostDropper
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
MT Bromo N8
Other Enduro bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

29 mph

MT Bromo N8

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews

Summary

The Polygon MT family, particularly in its enduro category, is praised for its aggressive geometry and suspension performance, offering a comfortable yet nimble ride. Reviews highlight its value and the innovative Independent Floating Suspension (IFS) design, though some note issues with weight and battery life. The bike is often compared to high-end models for its descending capabilities and handling.

Pros
  • Aggressive geometry for a comfortable ride

  • Innovative Independent Floating Suspension (IFS) design

  • Excellent value for the features offered

  • Strong descending capabilities and handling

  • Grippy and tough tires for loose conditions

Cons
  • Heavy weight

  • Limited battery life

  • Suspension requires significant maintenance

  • Underpowered brakes in some models

  • Battery drains quickly, especially with heavy use

Key Quotes
Every single number on Mt. Bromo could go toe to toe with any modern 29-inch enduro bike, e- or not.
Beta logoBeta
The Mt Bromo is a big and burly e-MTB with forward-thinking geometry and a totally new, if somewhat head-scratching suspension platform.
Flow Mountain Bike logoFlow Mountain Bike
The Polygon Mt Bromo is the hardest charging, fastest and confident rig we have ridden in recent memory.
Vital MTB logoVital MTB

Feedback?

View all reviews

Pinkbike
First Ride: 2022 Polygon Mt Bromo - A Relatively Affordable eMTB With Six-Bar Suspension

Apr 2021 · Seb Stott

Polygon's first full-suspension eMTB could hardly be accused of following the crowd.

Read Review

Vital MTB
2021 Polygon Mt Bromo N8 E-Bike

Apr 2021 · Sspomer

A bump gobbler with a complex suspension system.

Read Review

Flow Mountain Bike
Polygon Mt Bromo Review | Polygon's first full suspension e-MTB is not what we expected

Apr 2021

The Polygon Mt Bromo is the brand's first full suspension electric mountain bike. As expected, it features a mighty impressive package for the money. What we didn't expect though was the head-scratching suspension design. So how does it work? And what's it like to ride? Read on for our Polygon Mt Bromo review.

Highs
  • Finger-on-the-pulse geometry

  • Highly adjustable, rock-gobbling suspension performance

  • Short rear end boosts agility for such a big bike

  • Stupendously well-considered & desirable spec for the money

  • Grippy and tough tyres

  • Powerful Shimano braking and punchy shifting

Lows
  • Small battery may be a non-starter for some

  • Shock damper failed

  • Leaky fork seal

  • Rear wheel de-tensioning

  • Frame won't fit a water bottle

Read Review

Geometry
Specs
Build
Frame

ALX All-Mountain 6061 Aluminum, 160mm Rear Travel, ISCG05 Mount, Integrated Down Tube Battery, Internal Cable Routing, 148x12mm Boost Spacing

Fork

Fox 38 Float Performance Fit Grip 160mm, 44mm Offset, 110x15mm Boost Axle

Travel160mm

Spring TypeAir

Shock

Fox X2 Float, E2E: 205x65mm

Travel160mm

Stem

Entity Expert Alloy, Barbore: 35mm

Handlebar

Entity Expert Alloy, Barbore: 35mm, Rise: 25mm, Bend: 9degree

Saddle

Entity XTent Cr-Mo 7mm

Seatpost

Tranz X JD-Ysp23jl, 30.9mm

TypeDropper

Pedals

Flat Alloy W/ Replaceable Pin

Groupset
Rear Derailleur

Shimano Deore XT RD-M8100 1x12

Crank

E13 E-Spec Plus Crank, 165mm, 34t, Direct Mount

Shifters

Shimano Deore XT SL-M8100 1x12 Trigger

Cassette

Shimano CS-M6100 10-51t

Chain

Shimano CN-M6100

Brakes

Shimano Deore XT M8120 4-Piston, 203mm Rotors

TypeShimano XT Hydraulic Disc

Wheels
Rims

Entity XL2 35mm TLR Rims, Shimano Deore XT Hubs

Tires

Schwalbe Magic Mary 29x2.6 Evo Super Gravity Addix Soft TLR

Electric Components
Motor

Shimano DU-EP800 85nm

Battery

Shimano BT-E8035 504WH

Rider Notes
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First added January 31

Last updated April 11

Not listed for 1,147 days