Bicycle Archive · Specification reportBicycle Archive · Specification reportVelopedia Archive ID 85620
| Model year | 1999 |
|---|---|
| Brand | Bike Friday |
| Model | Tandem Tuesday 451 |
| Bicycle type | Tandem (folding) |
| Archive ID | 85620 |
| Original MSRP | $4,495.00 |
| Colors | Black Diamond, Candy Apple, Chrome Yellow, Cream Soda Blue, Flag Red, Grass Green, Ink Black, Midnight Blue, Polar White, Power Purple, Racing Green, Sapphire Blue, Stealth |
| Sizes | Custom |
| Weight | 38 lb |
| Frame construction | Brazed/welded |
|---|---|
| Frame material | 4130 chromoly |
| Fork | Bike Friday Aero |
| Fork material | 4130 chromoly, unicrown crown |
| Rear shock | N/A |
| Component group | Shimano Ultegra |
|---|---|
| Shifters | Shimano Ultegra STI Dual Control |
| Front derailleur | Shimano Ultegra |
| Rear derailleur | Shimano Ultegra GS |
| Crankset | Shimano Ultegra |
| Bottom bracket | Shimano BB-6500 |
| BB shell width | 68mm English |
| Rear cogs | 9-speed, 12 - 23 teeth |
| Chain | Shimano CN-HG92, 1/2 x 3/32" |
| Pedals | Not included |
| Brakes | Shimano Ultegra Dual Pivot brakes, Shimano Ultegra STI levers |
|---|
| Headset | 1 1/4" Shimano Deore XT |
|---|---|
| Handlebar | Buyer's choice |
| Handlebar extensions | Buyer's choice |
| Stem | Bike Friday |
| Saddle | Not included |
| Seatpost | Kalloy/aluminum, suspension, 28.6mm diameter |
| Hubs | Shimano Ultegra |
|---|---|
| Rims | 36-hole |
| Spokes | DT stainless steel, 2.0mm straight gauge |
| Spoke nipples | Brass nipples |
| Front tire | Buyer's choice |
| Wheel size | Buyer's choice wheels |
| Head-tube angle | 73° |
|---|---|
| Seat-tube angle | 73° |
| Chainstay / rear center | 425.4 mm |
| Fork offset / rake | 35 mm |
Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 30, 2026.