
ENVE Twin Bolt Seatpost - 25mm Offset UD Carbon, 27.2mm
27.2mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: Commuter Mix drivetrain · 26" wheels.
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At a glance
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Specialized A1 Premium Aluminum |
| Fork | Globe |
| Fork Material | A1 Premium aluminum, unicrown crown |
| Component Group | Commuter Mix |
|---|---|
| Shifters | Shimano Alfine SL-S500 |
| Crankset | Sugino, 42 teeth |
| Bottom Bracket | Shimano BB-UN26 |
| Cassette | Shimano |
| Rear Cogs | 8-speed internal, 16 teeth |
| Chain | Shimano, 1/2 x 1/8" |
| Pedals | Globe Body Geometry,anti-slip composite |
| Brakes | Tektro Auriga Comp Hydraulic Disc brakes, Tektro Auriga Comp levers |
|---|
| Headset | 1 1/8" integrated |
|---|---|
| Handlebar | Globe alloy |
| Handlebar Extensions | Not included |
| Stem | Globe 3D forged 8deg. |
| Saddle | Specialized BG Indie XC |
| Seatpost | Specialized alloy two bolt, 27.2mm diameter |
| Hubs | Front: Specialized Hi Lo disc, Rear: Shimano Alfine SG-S500 |
|---|---|
| Rims | Specialized HRD DW, 28-hole/32-hole |
| Spokes | Stainless steel, 15ga. (1.8mm) |
| Front Tire | 26 x 1.50" Specialized Nimbus Sport |
| Wheel Size | 26" wheels |
Parts & serviceability

27.2mm
Replacement option · verify fit
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. Velopedia may also earn from qualifying retailer purchases.
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: 2009 Specialized San Francisco 3 · City/commuter · Published sizes: 16", 17.5", 19", 21"
Archived: Frame: TIG-welded · Fork: Globe · A1 Premium aluminum, unicrown crown
Archived: Group: Commuter Mix · Shifters: Shimano Alfine SL-S500 · Crankset: Sugino, 42 teeth · Bottom bracket: Shimano BB-UN26 · Cassette: Shimano · Rear cogs: 8-speed internal, 16 teeth · Chain: Shimano, 1/2 x 1/8"
Archived: Brakes: Tektro Auriga Comp Hydraulic Disc brakes, Tektro Auriga Comp levers
Archived: Wheel size: 26" wheels · Rims: Specialized HRD DW, 28-hole/32-hole · Hubs: Front: Specialized Hi Lo disc, Rear: Shimano Alfine SG-S500 · Front tire: 26 x 1.50" Specialized Nimbus Sport
Archived: Headset: 1 1/8" integrated · Handlebar: Globe alloy · Stem: Globe 3D forged 8deg. · Seatpost: Specialized alloy two bolt, 27.2mm diameter · Saddle: Specialized BG Indie XC · Pedals: Globe Body Geometry,anti-slip composite
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.