Bicycle Archive · Specification report

2005 Specialized Hotrock 20" Coaster 1-Speed

Velopedia Archive ID 10667

Overview

Model year	2005
Brand	Specialized
Model	Hotrock 20" Coaster 1-Speed
Bicycle type	Juvenile
Archive ID	10667
Original MSRP	$160.00
Colors	Blue, Silver, Yellow, Lilac

Frameset

Frame construction	TIG-welded
Frame material	Steel
Fork	Specialized
Fork material	Steel, unicrown crown
Rear shock	N/A

Drivetrain

Component group	Juvenile Mix
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	One-piece steel, 36 teeth
Rear cogs	1-speed, 18 teeth
Chain	KMC Z410, 1/2 x 1/8"
Pedals	Composite BMX

Brakes

Brakes	Tektro linear-pull/coaster brake rear brakes, Tektro junior rear levers

Cockpit & contact points

Headset	1 1/8" threadless
Handlebar	Hi-tensile 2-piece
Handlebar extensions	N/A
Stem	Aluminum
Saddle	Specialized Jumping
Seatpost	Steel

Wheels & tires

Hubs	Front: loose ball, Rear: coaster brake
Rims	Aluminum, 36-hole
Spokes	UCP, 14ga. (2.0mm) straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 2.125" Specialized Roller
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on August 23, 2026.