VelopediaBicycle Archive · Specification report

2004 Haro Backtrail Z12

Velopedia Archive ID 30797

Overview

Model year2004
BrandHaro
ModelBacktrail Z12
Bicycle typeJuvenile
Archive ID30797
ColorsAbsolut Red, Candy Blue
SizesJunior

Frameset

Frame constructionTIG-welded
Frame materialHi-tensile steel
ForkHaro
Fork materialHi-tensile steel, unicrown crown
Rear shockN/A

Drivetrain

Component groupN/A
ShiftersN/A
Front derailleurN/A
Rear derailleurN/A
CranksetHaro, 28 teeth
Bottom bracketFusion sealed
BB shell width68mm American
Rear cogs1-speed, 16 teeth
ChainKMC Z410, 1/2 x 1/8"
PedalsResin

Brakes

BrakesN/A

Cockpit & contact points

Headset1" threaded steel
HandlebarHaro 16" Mini
Handlebar extensionsN/A
StemFusion
SaddleHaro
SeatpostHaro straight, 22.2mm diameter

Wheels & tires

HubsFront: steel, nutted, Rear: steel, coaster brake
RimsAluminum, 16-hole
Spokes14ga. (2.0mm) straight gauge
Spoke nipplesBrass nipples
Front tire12 x 2.125" Kenda K-50
Wheel size12" wheels

Geometry · Legacy reference

Top tube303.5 mm
Head-tube angle70°
Seat-tube angle68.5°

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 1, 2026.