
ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: 29/27.5 wheels · 6.08 lbs. 27.5, 6.26 lbs. 29 published weight.
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At a glance
| Frame Construction | Tig welded |
|---|---|
| Frame Material | Chromoly |
| Fork | 522mm axle to crown 42mm offset (27.5) 531mm axle to crown 51mm offset (29) |
| Crankset | 34t (27.5)/32t (29) max chainring clearance |
|---|---|
| BB Shell Width | 73mm English |
| Brakes | 160mm IS Mount |
|---|
| Headset | 44mm/44mm Zero Stack |
|---|---|
| Seatpost | 30.9mm |
| Hubs | Syntace X12 12mm x 142mm |
|---|---|
| Front Tire | 27.5 x 2.5/29 x 2.3 max tire clearance |
| Wheel Size | 29/27.5 |
Parts & serviceability

30.9x400mm
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: 2015 Transition TransAm Frame · Mountain Hardtail · Published sizes: S, M, L, XL
Archived: Frame: Tig welded · Fork: 522mm axle to crown 42mm offset (27.5) 531mm axle to crown 51mm offset (29)
Archived: Fork: 522mm axle to crown 42mm offset (27.5) 531mm axle to crown 51mm offset (29)
Archived: Crankset: 34t (27.5)/32t (29) max chainring clearance
Archived: Brakes: 160mm IS Mount
Archived: Wheel size: 29/27.5 · Hubs: Syntace X12 12mm x 142mm · Front tire: 27.5 x 2.5/29 x 2.3 max tire clearance
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.