Bicycle Archive · Specification report

2004 Specialized Hotrock 20 Freewheel Girls

Velopedia Archive ID 31649

Overview

Model year	2004
Brand	Specialized
Model	Hotrock 20 Freewheel Girls
Bicycle type	Juvenile mountain bike, suspension
Archive ID	31649
Original MSRP	$150.00
Colors	Lilac
Sizes	Girls 9"

Frameset

Frame construction	TIG-welded
Frame material	Chromoly
Fork	RST, 51mm travel
Fork material	Hi-tensile steel, single crown

Drivetrain

Component group	Mountain Mix
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Rear cogs	1-speed
Chain	1/2 x 3/32"

Brakes

Brakes	Aluminum side-pull front/aluminum linear-pull rear brakes, aluminum levers

Cockpit & contact points

Headset	1 1/8" threadless sealed mechanism
Handlebar	Steel
Handlebar extensions	Not included
Stem	Specialized steel
Saddle	Specialized Expert
Seatpost	Aluminum, 27.2mm diameter

Wheels & tires

Hubs	Aluminum, nutted
Rims	Specialized aluminum, 36-hole
Spokes	Stainless steel, 14ga. (2.0mm) straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 2.125" Specialized Roller
Wheel size	20" wheels

Geometry · Legacy reference

Head-tube angle	71°
Seat-tube angle	74°
Chainstay / rear center	380 mm
Wheelbase	860 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 3, 2026.