
ENVE Twin Bolt Seatpost - 25mm Offset UD Carbon, 25.4mm
25.4mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: BMX drivetrain · 20" wheels.
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At a glance
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | High-Tensile steel |
| Fork | Cromo |
| Fork Material | Cromo, single crown |
| Component Group | BMX |
|---|---|
| Crankset | 1-piece steel, 36T teeth |
| Bottom Bracket | Retainer Ball |
| Rear Cogs | 1-speed, 14 teeth |
| Chain | KMC Z410 |
| Pedals | Giant Plastic, looseball |
| Brakes | Tektro Direct pull brakes, Tektro alloy levers |
|---|
| Handlebar | Steel |
|---|---|
| Handlebar Extensions | Not included |
| Stem | Giant Top Load Alloy |
| Saddle | Ultralight, 8mm rails |
| Seatpost | Steel Micro Adjust, 25.4mm diameter |
| Hubs | Alloy |
|---|---|
| Rims | Alloy, 36-hole |
| Spokes | BED Stainless stainless |
| Front Tire | Front: 20 x 2.125" Kenda K-Rad, Rear: 20 x 1.95 Kenda K-Rad |
| Wheel Size | 20" wheels |
Parts & serviceability

25.4mm
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: 2011 Giant GFR F/W · BMX · Published sizes: 20" Wheel
Archived: Frame: TIG-welded · Fork: Cromo · Cromo, single crown
Archived: Group: BMX · Crankset: 1-piece steel, 36T teeth · Bottom bracket: Retainer Ball · Rear cogs: 1-speed, 14 teeth · Chain: KMC Z410
Archived: Brakes: Tektro Direct pull brakes, Tektro alloy levers
Archived: Wheel size: 20" wheels · Rims: Alloy, 36-hole · Hubs: Alloy · Front tire: Front: 20 x 2.125" Kenda K-Rad, Rear: 20 x 1.95 Kenda K-Rad
Archived: Handlebar: Steel · Stem: Giant Top Load Alloy · Seatpost: Steel Micro Adjust, 25.4mm diameter · Saddle: Ultralight, 8mm rails · Pedals: Giant Plastic, looseball
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.