Bicycle Archive · Specification report

2001 DirtMaster Haz-Mat

Velopedia Archive ID 35129

Overview

Model year	2001
Brand	DirtMaster
Model	Haz-Mat
Bicycle type	Freestyle/jumping
Archive ID	35129
Original MSRP	$269.00
Colors	Dark Grey, Red
Sizes	Pro
Weight	28.5 lb

Frameset

Frame construction	TIG-welded
Frame material	Chromoly main triangle/hi-tensile steel rear stays
Fork	DirtMaster
Fork material	Chromoly, unicrown crown
Rear shock	N/A

Drivetrain

Component group	N/A
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	1-piece chromoly 175mm, 43 teeth
Bottom bracket	Yst
BB shell width	American
Rear cogs	1-speed, 16 teeth
Chain	KMC Z410, 1/2 x 1/8"
Pedals	Radix

Brakes

Brakes	Chang Star U-brake brakes, Chang Star Freestyle levers

Cockpit & contact points

Headset	1 1/8" threadless Tioga TG
Handlebar	DirtMaster Foo-Bar
Handlebar extensions	N/A
Stem	Radix
Saddle	Velo
Seatpost	Hsin Lung pillar, 25.4mm diameter

Wheels & tires

Hubs	Radix
Rims	Alex aluminum, 48-hole
Spokes	Chung Nan UCP, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 1.95" Freestyle type
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	495.3 mm
Head-tube angle	72°
Seat-tube angle	68°
Chainstay / rear center	355.6 mm
Wheelbase	882.6 mm
Fork offset / rake	31.8 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 30, 2026.