
Challenge Strada Bianca Pro Tubeless Tire Tan, 700x30
700x30
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: Shimano 600 Ultegra drivetrain · 700c wheels · legacy reference geometry.
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At a glance
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | 3Al/2.5V titanium, butted |
| Fork | Steelman |
| Fork Material | Chromoly, unicrown crown |
| Component Group | Shimano 600 Ultegra |
|---|---|
| Shifters | Shimano 600 Ultegra STI Dual Control |
| Front Derailleur | Shimano 600 Ultegra, braze-on |
| Rear Derailleur | Shimano 600 Ultegra GS |
| Crankset | Ritchey Tandem |
| Bottom Bracket | Ritchey SuperLogic Comp |
| BB Shell Width | 68mm English |
| Rear Cogs | 9-speed, Buyer's choice of gearing |
| Chain | Shimano CN-6500, 1/2 x 3/32" |
| Pedals | Not included |
| Brakes | Shimano Deore XT V-Brake brakes, Shimano 600 Ultegra levers |
|---|
| Headset | 1" Shimano 600 Ultegra |
|---|---|
| Handlebar | TTT Forma 2 |
| Stem | TTT Synthesis/Salsa stoker |
| Saddle | Selle Italia Flite, titanium rails |
| Seatpost | American Classic |
| Hubs | World Class |
|---|---|
| Rims | Mavic T 217 SUP, 40-hole |
| Spokes | Wheelsmith stainless steel, 2.0mm straight gauge |
| Spoke Nipples | Alloy nipples |
| Front Tire | 700 x 30c IRC Tandem |
| Wheel Size | 700c 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 Use these as a historical reference, not for size-specific fit.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 | 568 mm |
| Head-tube angle | 73.5° |
| Seat-tube angle | 73.5° |
| Chainstay / rear center | 410 mm |
The preserved source contains one model-level geometry set without an identified frame size.
Parts & serviceability

700x30
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: 1998 Seven Cycles Axiom Tandem · Tandem (road)
Archived: Frame: TIG-welded · Fork: Steelman · Chromoly, unicrown crown
Archived: Group: Shimano 600 Ultegra · Shifters: Shimano 600 Ultegra STI Dual Control · Front derailleur: Shimano 600 Ultegra, braze-on · Rear derailleur: Shimano 600 Ultegra GS · Crankset: Ritchey Tandem · Bottom bracket: Ritchey SuperLogic Comp · Rear cogs: 9-speed, Buyer's choice of gearing · Chain: Shimano CN-6500, 1/2 x 3/32"
Archived: Brakes: Shimano Deore XT V-Brake brakes, Shimano 600 Ultegra levers
Archived: Wheel size: 700c wheels · Rims: Mavic T 217 SUP, 40-hole · Hubs: World Class · Front tire: 700 x 30c IRC Tandem
Archived: Headset: 1" Shimano 600 Ultegra · Handlebar: TTT Forma 2 · Stem: TTT Synthesis/Salsa stoker · Seatpost: American Classic · Saddle: Selle Italia Flite, titanium rails · Pedals: Not included
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.