
ENVE Twin Bolt Seatpost - 25mm Offset UD Carbon, 25.4mm
25.4mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: N/A drivetrain · 20" wheels · legacy reference geometry.
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At a glance
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | 4130 chromoly main triangle/hi-tensile steel rear stays |
| Fork | Redline Monster Fork |
| Fork Material | 4130 chromoly, unicrown crown |
| Crankset | Redline Big Block, 44 teeth |
|---|---|
| Bottom Bracket | Redline Big Block |
| BB Shell Width | American |
| Rear Cogs | 1-speed, 16 teeth |
| Chain | 1/2 x 3/32" |
| Pedals | Redline aluminum platform |
| Brakes | Tektro 915A rear brakes, Tektro 341A rear levers |
|---|
| Headset | 1 1/8" threadless Tioga TG |
|---|---|
| Handlebar | Redline Pro |
| Stem | Redline Flight Group |
| Saddle | Redline Team Kevlar |
| Seatpost | Redline, 25.4mm diameter |
| Hubs | Redline Flight Group |
|---|---|
| Rims | Sun Rims, 36-hole |
| Spokes | Redline stainless steel, 2.0mm straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | Front: 20 x 2.125" Tioga Comp III, Rear: 20 x 1.75" Tioga Comp III |
| Wheel Size | 20" 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 Use these as a historical reference, not for size-specific fit.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 | 514.4 mm |
| Head-tube angle | 73.5° |
| Seat-tube angle | 71° |
| Chainstay / rear center | 388.6 mm |
| Wheelbase | 950 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 Redline RL 440 · BMX · Published sizes: Pro
Archived: Frame: TIG-welded · Fork: Redline Monster Fork · 4130 chromoly, unicrown crown
Archived: Crankset: Redline Big Block, 44 teeth · Bottom bracket: Redline Big Block · Rear cogs: 1-speed, 16 teeth · Chain: 1/2 x 3/32"
Archived: Brakes: Tektro 915A rear brakes, Tektro 341A rear levers
Archived: Wheel size: 20" wheels · Rims: Sun Rims, 36-hole · Hubs: Redline Flight Group · Front tire: Front: 20 x 2.125" Tioga Comp III, Rear: 20 x 1.75" Tioga Comp III
Archived: Headset: 1 1/8" threadless Tioga TG · Handlebar: Redline Pro · Stem: Redline Flight Group · Seatpost: Redline, 25.4mm diameter · Saddle: Redline Team Kevlar · Pedals: Redline aluminum platform
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.