Bicycle Archive · Specification report

2004 Specialized Hotrock 24 21-Speed Boys

Velopedia Archive ID 92405

Overview

Model year	2004
Brand	Specialized
Model	Hotrock 24 21-Speed Boys
Bicycle type	Juvenile mountain bike, suspension
Archive ID	92405
Original MSRP	$280.00
Colors	Red
Sizes	Boys 10"

Frameset

Frame construction	TIG-welded
Frame material	Chromoly
Fork	RST Capa C4, 51mm travel
Fork material	Aluminum, single crown

Drivetrain

Component group	Mountain Mix
Shifters	Shimano Revo 7-speed
Front derailleur	Shimano FD-C050, bottom-pull/clamp-on 31.8mm
Rear derailleur	Shimano Tourney TY-22
Crankset	Specialized aluminum, 24/34/42 teeth
Bottom bracket	Sealed
Rear cogs	7-speed, 14 - 28 teeth
Chain	Shimano IG-31, 1/2 x 3/32"
Pedals	Resin

Brakes

Brakes	Aluminum linear-pull brakes, aluminum linear-pull 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	24 x 2.125" Specialized Roller
Wheel size	24" wheels

Geometry · Legacy reference

Top tube	507 mm
Head-tube angle	71°
Seat-tube angle	74°
Chainstay / rear center	420 mm
Wheelbase	986 mm

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