
ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
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 | Chromoly main triangle |
| Fork | 1-1/8" threadless |
| Fork Material | Steel, unicrown crown |
| Component Group | BMX |
|---|---|
| Crankset | Specialized Cr-Mo tubular 3pc, 175mm, powder coated, Fuse forged and CNC cut, 36t forged alloy teeth |
| Bottom Bracket | Euro 10-spline loose ball, 19mm spindle |
| Rear Cogs | 1-speed, 13 teeth |
| Chain | KMC Z510 |
| Pedals | Specialized Alloy platform, molded pins, 9/16" Cr-Mo axle |
| Brakes | Dia Tech 997 "Magic" w/ soft compond pads rear brakes, Tektro U-Brake alloy, two finger levers |
|---|
| Headset | 1 1/8" threadless, rotor compatable |
|---|---|
| Handlebar | Hi-Ten 2-piece, 195mm rise x 620mm width, 10 deg. backsweep, 5 deg. upsweep |
| Handlebar Extensions | Not included |
| Stem | Forged alloy, 45mm reach, top-load |
| Saddle | Fuse Jumping with 7mm rails |
| Seatpost | Alloy micro adjust, 30.9mm diameter |
| Hubs | Front: Fuse double sealed, loose ball, mid flange, solid 14mm axle, Rear: Fuse alloy Flip-side L&R side drive, w/ solid 14mm axle |
|---|---|
| Rims | Sun ZX-25, 36-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | Front: 20 x 2.10" Specialized Rythm Sport, wire bead, Rear: 20 x 2.00" Specialized Compound Sport, 20x2.0", wire bead |
| Wheel Size | 20" wheels |
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: 2006 Specialized Fuse II · BMX · Published sizes: 16" TT, 20.5" TT, 20.75" TT
Archived: Frame: TIG-welded · Fork: 1-1/8" threadless · Steel, unicrown crown
Archived: Group: BMX · Crankset: Specialized Cr-Mo tubular 3pc, 175mm, powder coated, Fuse forged and CNC cut, 36t forged alloy teeth · Bottom bracket: Euro 10-spline loose ball, 19mm spindle · Rear cogs: 1-speed, 13 teeth · Chain: KMC Z510
Archived: Brakes: Dia Tech 997 "Magic" w/ soft compond pads rear brakes, Tektro U-Brake alloy, two finger levers
Archived: Wheel size: 20" wheels · Rims: Sun ZX-25, 36-hole · Hubs: Front: Fuse double sealed, loose ball, mid flange, solid 14mm axle, Rear: Fuse alloy Flip-side L&R side drive, w/ solid 14mm axle · Front tire: Front: 20 x 2.10" Specialized Rythm Sport, wire bead, Rear: 20 x 2.00" Specialized Compound Sport, 20x2.0", wire bead
Archived: Headset: 1 1/8" threadless, rotor compatable · Handlebar: Hi-Ten 2-piece, 195mm rise x 620mm width, 10 deg. backsweep, 5 deg. upsweep · Stem: Forged alloy, 45mm reach, top-load · Seatpost: Alloy micro adjust, 30.9mm diameter · Saddle: Fuse Jumping with 7mm rails · Pedals: Specialized Alloy platform, molded pins, 9/16" Cr-Mo axle
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