Velopedia Bicycle Archive
2006 Specialized Hotrock A1 FSR
Original specifications: Shimano Altus · 7-speed · mechanical rear derailleur · 24" wheels.
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At a glance
- Model year
- 2006
- Category
- Mountain
- Original MSRP
- $350.00
- Sizes
- 11.5"
- In this record
- 28 specifications · archived image · original MSRP
- Archive ID
- 11851
Model history 4 other years
Original buildA1 Premium Aluminum · Juvenile Mix · 24" wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | A1 Premium Aluminum |
| Fork | RST Capa T5, 51mm |
| Fork Material | Steel/aluminum, single crown |
| Rear Shock | ToughShock Coil over, 150x31mm, 3" travel |
Drivetrain
| Component Group | Juvenile Mix |
|---|---|
| Shifters | Shimano RS-41 "Revo" twist shifters, 3/7speed |
| Front Derailleur | Shimano Acera, 31.8 clamp, bottom pull |
| Rear Derailleur | Shimano Altus |
| Crankset | Truvativ “ISO Flow”, alloy 160mm with replaceable chainrings and capless bo, Truvativ 42t 7075alloy, heat treated Cr-Mo 32t and 22t teeth |
| Bottom Bracket | TruVativ LE, 113mm spindle |
| BB Shell Width | 68mm English |
| Rear Cogs | 7-speed, 14 - 28 teeth |
| Chain | Shimano |
| Pedals | Steel cage, resin body(toe clip compatible) with reflectors |
Brakes
| Brakes | Tektro, alloy linear pull, stainless steel pipe, 60mm all weather pads brakes, Tektro junior “V”, alloy, linear pull compatible levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless, sealed loose ball |
|---|---|
| Handlebar | Alloy, flat, 6 degree sweep, 540mm width |
| Handlebar Extensions | Not included |
| Stem | A-Head alloy, 15 degree rise, 75mm length |
| Saddle | Specialized Mini Mountain |
| Seatpost | Alloy, micro adjust, 27.2mm diameter |
Wheels & Tires
| Hubs | Front: Alloy, double sealed with alloy QR, Rear: Alloy, double sealed with alloy QR, freewheel type |
|---|---|
| Rims | Alex, 32-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 24 x 1.80" Specialized Roll X |
| Wheel Size | 24" wheels |
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Speed estimates require verified rear tire dimensions. Gear ratios are shown without assuming a tire size.
Bike-specific inspection checklist 22 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: 2006 Specialized Hotrock A1 FSR · Mountain bike, front & rear suspension · Published sizes: 11.5"
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: RST Capa T5, 51mm · Steel/aluminum, single crown
Suspension
Evaluate the suspension →Archived: Fork: RST Capa T5, 51mm · Rear shock: ToughShock Coil over, 150x31mm, 3" travel
Drivetrain
Check drivetrain wear →Archived: Group: Juvenile Mix · Shifters: Shimano RS-41 "Revo" twist shifters, 3/7speed · Front derailleur: Shimano Acera, 31.8 clamp, bottom pull · Rear derailleur: Shimano Altus · Crankset: Truvativ “ISO Flow”, alloy 160mm with replaceable chainrings and capless bo, Truvativ 42t 7075alloy, heat treated Cr-Mo 32t and 22t teeth · Bottom bracket: TruVativ LE, 113mm spindle · Rear cogs: 7-speed, 14 - 28 teeth · Chain: Shimano
Brakes
Inspect the brakes →Archived: Brakes: Tektro, alloy linear pull, stainless steel pipe, 60mm all weather pads brakes, Tektro junior “V”, alloy, linear pull compatible levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 24" wheels · Rims: Alex, 32-hole · Hubs: Front: Alloy, double sealed with alloy QR, Rear: Alloy, double sealed with alloy QR, freewheel type · Front tire: 24 x 1.80" Specialized Roll X
Controls and contact points
Archived: Headset: 1 1/8" threadless, sealed loose ball · Handlebar: Alloy, flat, 6 degree sweep, 540mm width · Stem: A-Head alloy, 15 degree rise, 75mm length · Seatpost: Alloy, micro adjust, 27.2mm diameter · Saddle: Specialized Mini Mountain · Pedals: Steel cage, resin body(toe clip compatible) with 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.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





