Bicycle Archive · Specification reportBicycle Archive · Specification report2010 Diamondback RM20 · 2003 Diamondback RM20
| Specification | 2010 Diamondback RM20 | 2003 Diamondback RM20 |
|---|---|---|
| Overview | ||
| Model year | 2010 | 2003 |
| Brand | Diamondback | Diamondback |
| Model | RM20 | RM20 |
| Bicycle type | Juvenile | BMX |
| Archive ID | 21654 | 39410 |
| Original MSRP | — | $499.99 |
| Colors | Gloss Blue | Fast Black/Silver/Black |
| Sizes | One size | Pro |
| Frameset | ||
| Frame construction | TIG-welded | TIG-welded |
| Frame material | Hi-Ten Remington Steel | 7005 aluminum |
| Fork material | Hi-Ten Remington steel, unicrown crown | Carbon fiber composite w/chromoly steerer, unicrown crown |
| Rear shock | N/A | N/A |
| Drivetrain | ||
| Component group | Juvenile Mix | N/A |
| Shifters | N/A | N/A |
| Front derailleur | N/A | N/A |
| Rear derailleur | N/A | N/A |
| Crankset | 1-piece steel 140mm, 36 teeth | AC Race 16 3pc, 44 teeth |
| Bottom bracket | Loose ball | AC Euro Sealed Bearing |
| BB shell width | — | 68mm English |
| Cassette | Cog | — |
| Rear cogs | 1-speed, 18 teeth | 1-speed, 16 teeth |
| Chain | — | KMC HP20NP, 1/2 X 3/32" |
| Pedals | Resin platform | Aluminum |
| Brakes | ||
| Brakes | Alloy Linear Pull/Coaster Brake rear brakes, Alloy linear rear levers | Tektro BX-20 linear-pull rear brakes, Tektro Sabre rear levers |
| Cockpit & contact points | ||
| Headset | 1" Threaded | 1 1/8" threadless aluminum |
| Handlebar | Hi-Ten 2-piece 24" wide x 6" rise | Chromoly BMX |
| Handlebar extensions | Not included | N/A |
| Stem | Steel quill | Aluminum |
| Saddle | DB BMX padded | Diamondback BMX |
| Seatpost | Steel pillar, 25.4mm diameter | Aluminum, 27.0mm diameter |
| Wheels & tires | ||
| Hubs | Front: Nutted, Rear: Nutted Coaster | Aluminum |
| Rims | Alex R-1000, 36-hole | Alex DM-24, 36-hole |
| Spokes | 14ga. (2.0mm) | Stainless steel, straight gauge |
| Spoke nipples | — | Brass nipples |
| Front tire | 20 x 2.125" Comp III style | 20 x 2.125" Tioga Comp III |
| 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 | 2010 Diamondback RM20 | 2003 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 10, 2026.