
ENVE Twin Bolt Seatpost - 25mm Offset UD Carbon, 25.4mm
25.4mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: Shimano Nexus drivetrain · 26" wheels · 36 lb published weight.
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At a glance
| Frame Construction | Welded |
|---|---|
| Frame Material | Hi-tensile steel |
| Fork | Sun Cruiser |
| Fork Material | Hi-tensile steel, oversize, unicrown crown |
| Component Group | Shimano Nexus |
|---|---|
| Shifters | SRAM ESP 7.0 |
| Crankset | 1-piece 6 1/2", 46 teeth |
| Bottom Bracket | One piece |
| BB Shell Width | American |
| Chain | KMC 410, 1/2 x 1/8" |
| Pedals | Victor VP-805 |
| Headset | 1" steel |
|---|---|
| Handlebar | Steel |
| Stem | Alloy |
| Saddle | Viscount |
| Seatpost | Steel, chrome plated, 25.4mm diameter |
| Hubs | Front: Jou Yu JY-433, Rear: Shimano Nexus Inter 4 |
|---|---|
| Rims | HJC 7X, 36-hole |
| Spokes | Sha-Dar stainless steel, 2.0mm straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 26 x 2.125" Kenda K-80 |
| Wheel Size | 26" wheels |
Model-level measurements; the frame size was not recorded. Use these as a historical reference, not for size-specific fit.
Reference frame view
Select an available measurement to locate it on the frame.
| Measurement | Legacy reference |
|---|---|
| Top tube | 584.2 mm |
| Head-tube angle | 66° |
| Seat-tube angle | 82° |
| Chainstay / rear center | 457.2 mm |
| Wheelbase | 1092.2 mm |
| Fork offset / rake | 50 mm |
The preserved source contains one model-level geometry set without an identified frame size.
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: 1999 Pyramid Retro-Nexus · Cruiser · Published sizes: 18.5", womens 15", womens 18"
Archived: Frame: Welded · Fork: Sun Cruiser · Hi-tensile steel, oversize, unicrown crown
Archived: Group: Shimano Nexus · Shifters: SRAM ESP 7.0 · Crankset: 1-piece 6 1/2", 46 teeth · Bottom bracket: One piece · Chain: KMC 410, 1/2 x 1/8"
Archived: Wheel size: 26" wheels · Rims: HJC 7X, 36-hole · Hubs: Front: Jou Yu JY-433, Rear: Shimano Nexus Inter 4 · Front tire: 26 x 2.125" Kenda K-80
Archived: Headset: 1" steel · Handlebar: Steel · Stem: Alloy · Seatpost: Steel, chrome plated, 25.4mm diameter · Saddle: Viscount · Pedals: Victor VP-805
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.