Velopedia Bicycle Archive
2015 Specialized Hotrock 24 XC Disc Boys
Original specifications: Shimano Acera · 8-speed rear derailleur · 24 wheels.
Selling this bike? Create a shareable bike record
At a glance
- Model year
- 2015
- Category
- Mountain
- Original MSRP
- $660.00
- Sizes
- 11.5, 13.5"
- Colors
- Black/Green/White
- In this record
- 22 specifications · original MSRP
- Archive ID
- 1083090
Original buildAluminum · Youth mix · 24
Frameset
| Frame Construction | Specialized A1 Premium Aluminum, double-butted, formed downtube/toptube, externally relieved headtube, forged dropouts w/ replaceable hanger, disc mount |
|---|---|
| Frame Material | Aluminum |
| Fork | SR Suntour XCR-LO, 1 pc. mag lower, coil/MCU spring, Hi-Ten 28mm stanchions, 1-1/8" steerer, hydraulic lockout w/ preload adjust, MCD, 63mm travel |
| Fork Material | Suspension |
Drivetrain
| Component Group | Youth mix |
|---|---|
| Shifters | Shimano Rapidfire Plus, 8-speed, SL type w/ optical display |
| Front Derailleur | SR Suntour, 3-speed, high mount |
| Rear Derailleur | Shimano Acera, 8-speed, SGS cage |
| Crankset | SR Suntour XCT-JR, replaceable outer ring, 42/32/22, w/ chainguard |
| Bottom Bracket | Square taper, cartridge bearings, 68mm |
| Rear Cogs | Sunrace, 8-speed, 11-34 |
| Chain | KMC X8, 8-speed, w/ reusable MissingLink |
| Pedals | Nylon, loose ball bearings, 9/16", w/ reflectors |
Brakes
| Brakes | Tektro Auriga, hydraulic disc, resin/metallic pads, tooled reach adjust |
|---|
Cockpit & Contact Points
| Headset | 1-1/8" threadless |
|---|---|
| Handlebar | Specialized Kids, flat bar, alloy, 8-degree upsweep, 4-degree backsweep, 25mm rise, 25.4mm |
| Stem | Ahead, forged alloy, 4-bolt, 20-degree rise |
Wheels & Tires
| Hubs | Specialized Hi Lo disc, alloy, RCC bearing system, QR, 32h |
|---|---|
| Rims | Alex, 24", alloy double-wall, pin joint, 32h |
| Spokes | Stainless, 14g, w/ brass nipple |
| Front Tire | Specialized Fast Trak Sport, 60TPI, wire bead, 24x1.8" |
| Wheel Size | 24 |
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts
More parts (3)
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases.
Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2015 Specialized Hotrock 24 XC Disc Boys · Mountain Hardtail · Published sizes: 11.5, 13.5"
Frame and fork
Inspect the frame and fork →Archived: Frame: Specialized A1 Premium Aluminum, double-butted, formed downtube/toptube, externally relieved headtube, forged dropouts w/ replaceable hanger, disc mount · Fork: SR Suntour XCR-LO, 1 pc. mag lower, coil/MCU spring, Hi-Ten 28mm stanchions, 1-1/8" steerer, hydraulic lockout w/ preload adjust, MCD, 63mm travel · Suspension
Suspension
Evaluate the suspension →Archived: Fork: SR Suntour XCR-LO, 1 pc. mag lower, coil/MCU spring, Hi-Ten 28mm stanchions, 1-1/8" steerer, hydraulic lockout w/ preload adjust, MCD, 63mm travel
Drivetrain
Check drivetrain wear →Archived: Group: Youth mix · Shifters: Shimano Rapidfire Plus, 8-speed, SL type w/ optical display · Front derailleur: SR Suntour, 3-speed, high mount · Rear derailleur: Shimano Acera, 8-speed, SGS cage · Crankset: SR Suntour XCT-JR, replaceable outer ring, 42/32/22, w/ chainguard · Bottom bracket: Square taper, cartridge bearings, 68mm · Rear cogs: Sunrace, 8-speed, 11-34 · Chain: KMC X8, 8-speed, w/ reusable MissingLink
Brakes
Inspect the brakes →Archived: Brakes: Tektro Auriga, hydraulic disc, resin/metallic pads, tooled reach adjust
Wheels and tires
Check wheels and tires →Archived: Wheel size: 24 · Rims: Alex, 24", alloy double-wall, pin joint, 32h · Hubs: Specialized Hi Lo disc, alloy, RCC bearing system, QR, 32h · Front tire: Specialized Fast Trak Sport, 60TPI, wire bead, 24x1.8"
Controls and contact points
Archived: Headset: 1-1/8" threadless · Handlebar: Specialized Kids, flat bar, alloy, 8-degree upsweep, 4-degree backsweep, 25mm rise, 25.4mm · Stem: Ahead, forged alloy, 4-bolt, 20-degree rise · Pedals: Nylon, loose ball bearings, 9/16", w/ reflectors
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help document firsthand fit, ride and maintenance details that may no longer be available.
This archive record has limited published detail. Share what would help another rider understand how this model fit, rode and held up over time. Velopedia reviews every contribution before publication.
Already contributed? Send me a fresh private edit link
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.