Bicycle Archive · Specification reportBicycle Archive · Specification reportVelopedia Archive ID 31527
| Model year | 2004 |
|---|---|
| Brand | Trek |
| Model | 820 |
| Bicycle type | Mountain bike, front suspension |
| Archive ID | 31527 |
| Original MSRP | $219.99 |
| Colors | Black/Red, Blue/Silver |
| Sizes | 13", 15.5", 17.5", 19.5", 21.5", womens 13", womens 17.5" |
| Frame construction | TIG-welded |
|---|---|
| Frame material | Hi-tensile steel |
| Fork | RST 191 CL, 63mm travel |
| Fork material | Aluminum, single crown |
| Rear shock | N/A |
| Component group | Mountain Mix |
|---|---|
| Shifters | Shimano Altus EF-29 |
| Front derailleur | Shimano C051 |
| Rear derailleur | Shimano Altus |
| Crankset | Suntour XCC-100, 28/38/48 teeth |
| Rear cogs | 7-speed, 13 - 30 teeth |
| Chain | 1/2 x 3/32" |
| Pedals | Nylon platform |
| Brakes | Aluminum linear-pull brakes, aluminum linear-pull levers |
|---|
| Headset | 1 1/8" threadless Aheadset |
|---|---|
| Handlebar | Aluminum, 1.25" rise |
| Handlebar extensions | Not included |
| Stem | Aluminum threadless |
| Saddle | Bontrager Sport |
| Seatpost | Aluminum micro-adjust |
| Hubs | Aluminum, Q/R |
|---|---|
| Rims | Matrix 550, 32-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke nipples | Brass nipples |
| Front tire | 26 x 2.00" Bontrager Connection |
| Wheel size | 26" wheels |
| Top tube | 556.3 mm |
|---|---|
| Head-tube angle | 70.5° |
| Seat-tube angle | 73° |
| Chainstay / rear center | 435 mm |
| Wheelbase | 1039 mm |
| Fork offset / rake | 38.1 mm |
Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 4, 2026.