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2021 Polygon

ZETA 2

A 20″ aluminum frame commuter bike with mid-range components and tektro hydraulic disc brakes.
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Manufacturer Price

$609
Weight28.2 lbs  
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels20″ Aluminum
Drivetrain1 × 10
GroupsetTiagra
BrakesTektro Hydraulic Disc
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Insights
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)

26 mph

ZETA 2

31 mph

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Highest gear

(descending)

Sizing
All Size

3'11" +

🐐 Estimated

Rider Fit Notes

None yet.

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Geometry
Specs
Build
Frame

AL6 MINIVELO FRAME 20"

BB StandardBSA, Threaded

Fork

ALLOY RIGID FORK

Shock

-

Bottom Bracket

BSA THREADED FOR 2-PIECE CRANKSET

Stem

ENTITY SPORT ALLOY, EXT: 45MM, BAR BORE: 31,8MM, RISE/DROP: 3DEGREE

Handlebar

ENTITY SPORT ALLOY, WIDTH 640MM, BAR BORE: 31.8MM, BEND: 6 DEGREE

Saddle

ENTITY SADDLE

Seatpost

ENTITY SPORT ALLOY

TypeRigid

Pedals

-

Groupset
Rear Derailleur

SHIMANO TIAGRA RD-4700 DIRECT ATTACH

Crank

ALLOY 48T 170MM

Shifters

SHIMANO TIAGRA SL-4700, 1x10-SPEED RAPIDFIRE

Cassette

SHIMANO CS-HG500 11-34T

Chain

KMC CHAIN

Brakes

TEKTRO HD-M275 HYDRAULIC DISC BRAKE

TypeTektro Hydraulic Disc

Wheels
Rims

ALLOY DOUBLE WALL 406-21 32H FOR TYRE 406-20/35

Tires

VEE SPEEDSTER 20"x2.0"

Rider Notes
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First added May 12

Last updated April 5

Not listed for 1,518 days