Bicycle Archive · Specification report

2021 Polygon ZENITH TOWN-i3

Velopedia Archive ID 900001899

Overview

Model year	2021
Brand	Polygon
Model	ZENITH TOWN-i3
Bicycle type	Hybrid
Archive ID	900001899
Original MSRP	$679.00
Colors	Black
Sizes	S; M

Frameset

Frame construction	AL6 Commuter Nexus
Fork	HI-TEN Steel Rigid Fork
Fork material	Steel

Drivetrain

Shifters	Shimano Nexus SL-3S41E
Crankset	Alloy Crank 44T, 170mm
Bottom bracket	Cartridge Bearing
Cassette	Shimano Nexus 18T
Chain	KMC Z-610RB
Pedals	VP Component, VP-191, Alloy

Brakes

Brakes	Caliper Brake (F) Shimano Roller Brake BR-IM31R (R)

Cockpit & contact points

Headset	Internal Thread ID:44mm
Handlebar	Alloy, 695mm
Stem	Alloy, 80mm
Saddle	Selle Royal Ondina, Steel Rail
Seatpost	Alloy, 27.2X300mm

Wheels & tires

Wheels	Araya TX-633 Rims with Shimano Nexus-3 HUB
Front tire	26”X2.35”
Rear tire	26”X2.35”

Geometry · S

Seat tube	406 mm
Effective top tube	570 mm
Head tube	230 mm
Head-tube angle	66°
Seat-tube angle	66.5°
Actual seat-tube angle	66.5°
Chainstay / rear center	490 mm
Bottom-bracket drop	33 mm
Bottom-bracket height	307 mm
Reach	301 mm
Stack	590 mm
Standover height	719.28 mm

Geometry · M

Seat tube	456 mm
Effective top tube	585 mm
Head tube	250 mm
Head-tube angle	66°
Seat-tube angle	66.5°
Actual seat-tube angle	66.5°
Chainstay / rear center	490 mm
Wheelbase	1102 mm
Bottom-bracket drop	33 mm
Bottom-bracket height	307 mm
Reach	308 mm
Stack	608 mm
Standover height	763 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 14, 2026.