VelopediaBicycle Archive · Specification report

1999 Specialized Hotrock 20"

Velopedia Archive ID 80137

Overview

Model year1999
BrandSpecialized
ModelHotrock 20"
Bicycle typeJuvenile mountain bike, non-suspension
Archive ID80137
Original MSRP$209.99
ColorsMirror Blue, Speed Green, Team Pink
SizesBoys, girls

Frameset

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

Drivetrain

Component groupJuvenile Mix
ShiftersGrip Shift MRX-201 rear
Front derailleurN/A
Rear derailleurShimano Tourney TY-30
Crankset1-piece steel, 40 teeth
Bottom bracketYST BB 621
BB shell widthAmerican
Rear cogs7-speed, 14 - 28 teeth
ChainShimano CN-UG50, 1/2 x 3/32"
PedalsVictor VP-260N

Brakes

BrakesChang Star linear-pull brakes, Chang Star aluminum levers

Cockpit & contact points

HeadsetSealed mechanism
HandlebarSteel, rise
Handlebar extensionsN/A
StemSpecialized
SaddleSpecialized Mini Mountain
SeatpostPillar, steel, 30.4mm diameter

Wheels & tires

HubsJoy Tech steel, nutted
RimsSpecialized alloy, 36-hole
SpokesChung Nan steel, 2.0mm straight gauge
Spoke nipplesBrass nipples
Front tire20 x 1.80" Specialized Ground Control
Wheel size20" wheels

Geometry · Legacy reference

Top tube431 mm
Head-tube angle71°
Seat-tube angle74°
Chainstay / rear center378 mm
Wheelbase865 mm
Fork offset / rake23 mm

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