Bicycle Archive · Specification report

2021 Jamis Earth Cruiser 1

Velopedia Archive ID 900001717

Overview

Model year	2021
Brand	Jamis
Model	EARTH CRUISER 1
Bicycle type	Cruiser
Archive ID	900001717
Original MSRP	$549.95
Colors	Kinetic Grey, Mash, Radiant Blue
Sizes	MD; LG
Weight	29.25 lbs

Frameset

Frame construction	Classic Cantilever design with 6061 aluminum tubing, includes kickstand and painted steel chainguard
Frame material	Steel
Fork	Hi-tensile unicrown with radiused blades

Drivetrain

Crankset	Forged alloy crank, 170mm, with 44T chainring
Bottom bracket	Sealed cartridge, 68 x 122.5mm
Cassette	18T
Chain	KMC Z410NP, silver
Pedals	Cruiser platform with grip tape

Brakes

Brakes	Hi-Stop coaster brake

Cockpit & contact points

Headset	Internal cup, threaded, 1 1/8”
Handlebar	Jamis Cruise-control comfort bar
Stem	Alloy hi-rise, 180mm quill, 100mm extension, with removeable 2-bolt cap
Saddle	Earth Cruiser Comfort with memory foam padding, synthetic suede top, burnished sides and bumper springs
Seatpost	Alloy micro-adjust, 27.2 x 300mm, with 31.8mm alloy clamp and cromo seatpin

Wheels & tires

Wheels	Alex Zuma 36H black anodized alloy rims with alloy nutted front hub and Hi-Stop CB rear, 14 gauge stainless steel spokes
Front tire	CST Metropolitan Palm Bay, 26” x 2.35
Rear tire	CST Metropolitan Palm Bay, 26” x 2.35
Wheel size	26

Geometry · MD

Effective top tube	626 mm
Head tube	130 mm
Head-tube angle	69°
Seat-tube angle	67°
Chainstay / rear center	475 mm
Wheelbase	1107 mm
Bottom-bracket height	280 mm
Standover height	776 mm
Fork offset / rake	55 mm

Geometry · LG

Effective top tube	666 mm
Head tube	140 mm
Head-tube angle	69°
Seat-tube angle	67°
Chainstay / rear center	475 mm
Wheelbase	1147 mm
Bottom-bracket height	280 mm
Standover height	820 mm
Fork offset / rake	55 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 15, 2026.