Bicycle Archive · Specification report

2015 Specialized Hotrock 24 21-Speed Girls

Velopedia Archive ID 1115425

Overview

Model year	2015
Brand	Specialized
Model	HOTROCK 24 21-SPEED GIRLS
Bicycle type	Mountain Hardtail
Archive ID	1115425
Original MSRP	$420.00
Colors	Blue/Blue, Purple/White
Sizes	One Size

Frameset

Frame construction	Specialized A1 Premium Aluminum, formed toptube/downtube, forged dropouts, replaceable alloy derailleur hanger
Frame material	Aluminum
Fork	SR Suntour XCT-JR-24, 1 pc. alloy lower, coil/MCU spring, Hi-Ten 25.4mm stanchions, 1-1/8" steerer, direct press type dust seal, preload adjust, disc and V-brake mount, 50mm travel
Fork material	Suspension

Drivetrain

Component group	Youth mix
Shifters	Shimano Revo-Shift, 7-speed
Front derailleur	Shimano Tourney
Rear derailleur	Shimano TX-35, 7-speed, MegaRange
Crankset	Forged alloy arms, w/ chainguard, 42/34/24, steel
Bottom bracket	68x119mm, semi-cartridge, w/ bolts
Rear cogs	Shimano, 7-speed freewheel, 14-28
Chain	KMC HV500, 1/2"x3/32"
Pedals	Composite platform, w/ reflectors, 9/16"

Brakes

Brakes	Die-cast alloy V-brake, 60mm pads

Cockpit & contact points

Headset	Ahead, 1/8" sealed cartridge bearings
Handlebar	Kid's flat, steel, 10-degree backsweep, 4-degree upsweep, 25.4mm
Stem	Ahead, forged alloy, 4-bolt, 20-degree rise
Saddle	Specialized Kids, 7mm rails, w/ bumper
Seatpost	Alloy, single bolt, 27.2mm

Wheels & tires

Hubs	Alloy, 3/8" axle, loose ball, dual lock nuts w/ 17mm contact side, nutted, 32h, Alloy, loose ball, dual lock nuts w/ 17mm contact side, steel nutted, 32h
Rims	24", alloy single wall, pin joint, 32h
Spokes	Stainless, 14g, w/ brass nipple
Front tire	Specialized Roller, 30TPI, wire bead, 24x2.125"
Wheel size	24

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