Bicycle Archive · Specification reportBicycle Archive · Specification report2002 Diamondback RM20 · 2010 Diamondback RM20
| Specification | 2002 Diamondback RM20 | 2010 Diamondback RM20 |
|---|---|---|
| Overview | ||
| Model year | 2002 | 2010 |
| Brand | Diamondback | Diamondback |
| Model | RM20 | RM20 |
| Bicycle type | BMX | Juvenile |
| Archive ID | 91753 | 21654 |
| Original MSRP | $500.00 | — |
| Colors | Red/White | Gloss Blue |
| Sizes | Pro | One size |
| Frameset | ||
| Frame construction | TIG-welded | TIG-welded |
| Frame material | 7005 aluminum | Hi-Ten Remington Steel |
| Fork material | Chromoly, unicrown crown | Hi-Ten Remington steel, unicrown crown |
| Rear shock | N/A | N/A |
| Drivetrain | ||
| Component group | N/A | Juvenile Mix |
| Shifters | N/A | N/A |
| Front derailleur | N/A | N/A |
| Rear derailleur | N/A | N/A |
| Crankset | AC Race 16 3pc, 44 teeth | 1-piece steel 140mm, 36 teeth |
| Bottom bracket | AC Euro Sealed Bearing | Loose ball |
| BB shell width | 68mm English | — |
| Cassette | — | Cog |
| Rear cogs | 1-speed, 16 teeth | 1-speed, 18 teeth |
| Chain | KMC HP20NP, 1/2 X 3/32" | — |
| Pedals | Aluminum | Resin platform |
| Brakes | ||
| Brakes | Tektro BX-20 linear-pull rear brakes, Tektro Sabre rear levers | Alloy Linear Pull/Coaster Brake rear brakes, Alloy linear rear levers |
| Cockpit & contact points | ||
| Headset | 1 1/8" threadless aluminum | 1" Threaded |
| Handlebar | Chromoly BMX | Hi-Ten 2-piece 24" wide x 6" rise |
| Handlebar extensions | N/A | Not included |
| Stem | Aluminum | Steel quill |
| Saddle | Diamondback BMX | DB BMX padded |
| Seatpost | Aluminum, 27.0mm diameter | Steel pillar, 25.4mm diameter |
| Wheels & tires | ||
| Hubs | Aluminum | Front: Nutted, Rear: Nutted Coaster |
| Rims | Alex Supra B Pro, 36-hole | Alex R-1000, 36-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge | 14ga. (2.0mm) |
| Spoke nipples | Brass nipples | — |
| Front tire | 20 x 2.125" Tioga Comp III | 20 x 2.125" Comp III style |
| Rear tire | 20 x 1.75" Tioga Comp III | — |
| Wheel size | 20" wheels | 20" wheels |
One selected size or frame position per bicycle, matching the comparison dropdown choices used when Print / PDF was opened.
| Measurement | 2002 Diamondback RM20 | 2010 Diamondback RM20 |
|---|---|---|
| Selected size / position | Legacy reference | — |
| Head-tube angle | 73.5° | — |
| Seat-tube angle | 71° | — |
| Chainstay / rear center | 393.7 mm | — |
| Wheelbase | 985.5 mm | — |
| Fork offset / rake | 30.5 mm | — |
Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on November 12, 2026.