Velopedia Bicycle Archive

2008 Specialized Gromrock

Original specifications: Mountain Mix drivetrain · 26" wheels.

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At a glance

Model year
2008
Category
Mountain
Original MSRP
$480.00
Sizes
12.5"
Colors
Charcoal/black
In this record
26 specifications · archived image · original MSRP
Archive ID
24038
Original buildA1 premium aluminum · Mountain Mix · 26" wheels

Historical catalog variants

Archived sizes and colors

1 item record

Item-level catalog entries recovered from Velopedia’s original bicycle archive. They document how this model was listed historically; they do not identify the frame size associated with legacy reference geometry or indicate current availability.

Published sizes

12.5"

Published colors

Charcoal/Black
View 1 archived size/color combination
SizeColor
12.5"Charcoal/Black

Historical catalog evidence. Exact specifications and naming may vary by market, production run or manufacturer revision.

Frameset

Frame ConstructionTIG-welded
Frame MaterialA1 premium aluminum
ForkSR Suntour SF7-XCM, 80mm travel
Fork MaterialAluminum/steel, single crown crown

Drivetrain

Component GroupMountain Mix
ShiftersSRAM 3.0 Comp Grip Shift
Front DerailleurShimano Altus FD-M310-6, top swing
Rear DerailleurSRAM 3.0
CranksetSR Suntour XCM-T312, 22/32/44 teeth
Bottom BracketShimano BB-ES25, 118mm spindle
BB Shell Width68mm
Rear Cogs8-speed, 11 - 32 teeth
ChainKMX X8, 1/2 x 3/32"
PedalsSteel cage/composite body

Brakes

BrakesTektro IOX w/6" rotor brakes, Tektro Jr. levers

Cockpit & Contact Points

Headset1 1/8" threadless
HandlebarAlloy riser
Handlebar ExtensionsNot included
StemSpecialized 3D forged alloy 25.4mm
SaddleSpecialized Kids ATB w/kevlar sides
SeatpostSpecialized alloy two bolt, 30.9mm diameter

Wheels & Tires

HubsSpecialized Hi-Lo Disc
RimsSpecialized/Alex HRD 24, 32-hole
SpokesStainless steel, 15ga. (1.8mm) straight gauge
Front Tire26 x 2.1" Specialized Resolution wire
Wheel Size26" wheels

Gearing

Chainring ÷ rear sprocket

Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.

RPM
Theoretical speed from published tire dimensions; see the evidence note below.
Published build44/32/22T · 11–32T · 8-speed
Lowest0.69:1 Highest4.00:1 Total range582%
Estimated speed Lowest gear4.8 mph Highest gear28.1 mph

Estimate uses the published front tire 26×2.1 as a proxy, corroborated by the wheel size. Rear tire size is not published or verified. Approximate circumference; actual rollout varies with tire and pressure. Theoretical, not a maximum achievable speed.

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Parts & serviceability

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Original specifications
Bottom bracket · Original
Shimano BB-ES25, 118mm spindle
Front derailleur · Original
Shimano Altus FD-M310-6, top swing Search: Shimano FD-M310-6 front derailleur

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
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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.

Archived: 2008 Specialized Gromrock · Mountain bike, front suspension · Published sizes: 12.5"

Archived: Frame: TIG-welded · Fork: SR Suntour SF7-XCM, 80mm travel · Aluminum/steel, single crown crown

Archived: Fork: SR Suntour SF7-XCM, 80mm travel

Archived: Group: Mountain Mix · Shifters: SRAM 3.0 Comp Grip Shift · Front derailleur: Shimano Altus FD-M310-6, top swing · Rear derailleur: SRAM 3.0 · Crankset: SR Suntour XCM-T312, 22/32/44 teeth · Bottom bracket: Shimano BB-ES25, 118mm spindle · Rear cogs: 8-speed, 11 - 32 teeth · Chain: KMX X8, 1/2 x 3/32"

Archived: Brakes: Tektro IOX w/6" rotor brakes, Tektro Jr. levers

Archived: Wheel size: 26" wheels · Rims: Specialized/Alex HRD 24, 32-hole · Hubs: Specialized Hi-Lo Disc · Front tire: 26 x 2.1" Specialized Resolution wire

Controls and contact points

Archived: Headset: 1 1/8" threadless · Handlebar: Alloy riser · Stem: Specialized 3D forged alloy 25.4mm · Seatpost: Specialized alloy two bolt, 30.9mm diameter · Saddle: Specialized Kids ATB w/kevlar sides · Pedals: Steel cage/composite body

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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