Redline GROM X 2004 VS Dirtmaster BIG BERTHA 1999 specs comparison
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➜ Redline Grom X price
➜ Dirtmaster Big Bertha price
Redline Grom X
General Infos| Model | Grom X |
| Manufacturer | Redline |
| Year of production | 2004 |
| Current price | 🛒 View Price → |
| Color choice | - Yellow-Red |
| Sizes | - Mini |
| Sizes | - Mini |
Wheels And Breaking System
| Bike front tire | Rear: 20 X 1.75 (inches) Maxxis HookwormFront: 20 X 2.125 (inches) Maxxis Hookworm |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro Aluminum LeversTektro U-brake Brakes |
| Hubs for disc brakes | 14 (millimeters) AxleAluminum |
| Rims manufacturer | 36-holeAlex X-303 |
| Spoke nipples type | Not Available |
| Spoke wheel | 14ga. Straight Gauge |
Frame and Body Specs
| Frame materials | Chromoly and hi-tensile Steel |
| Frame type | TIG-welded |
| Handlebar construction | Redline Trail Bars |
| Handlebar extender | Optional |
| Handlebar stem details | Redline Aluminum Proline |
| Headset size | 1 1/8 (inches) Threadless Steel Threadless |
Gearing Specifications
| Bicycle chain | 1/2 X 3/32 (inches)KMC Z410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Loose Ball |
| Crankset parts and sizes | 36 Teeth1-piece 140 (millimeters) |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth1-speed |
Redline Grom X Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown CrownChromoly |
| Fork type | Redline Mini Monster |
Other Specs of Redline Grom X
| Component group sets | Not Available |
| Pedals details | Redline Aluminum |
| Rear shock absorber | Not Available |
| Saddle seat | Redline X5.0 |
| Seat post extension | Steel Micro-adjust |
Dirtmaster Big Bertha
General Infos| Model | Big Bertha |
| Manufacturer | Dirtmaster |
| Year of production | 1999 |
| Current price | 🛒 View Price → |
| Color choice | - Chrome-Plated- Red- Yellow-Black |
| Sizes | - Pro XL |
Wheels And Breaking System
| Bike front tire | 20 X 2.25 (inches) Kenda K-841 |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Dia-Compe Tech 99 LeversDia-Compe 990 Brakes |
| Hubs for disc brakes | Joy Tech Jy A085SBT |
| Rims manufacturer | 48-holeAlex Supra |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight GaugeDa-Sen Stainless Steel |
Frame and Body Specs
| Frame materials | 4130 chromoly c |
| Frame type | TIG-welded |
| Handlebar construction | Dirtmaster Hoochie |
| Handlebar extender | Not Available |
| Handlebar stem details | Odyssey Bang |
| Headset size | 1 1/8 (inches) Threadless Aheadset SE-1 F and S With Odyssey Gyro Detangler |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches)KMC 410H |
| Bottom bracket shell width | American 24tpi |
| Bottom bracket type | YST BB 621 |
| Crankset parts and sizes | 44 Teeth1-piece Chromoly 180 (millimeters) |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth1-speed |
Dirtmaster Big Bertha Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown4130 Chromoly |
| Fork type | Dirtmaster Street Fork |
Other Specs of Dirtmaster Big Bertha
| Component group sets | Not Available |
| Pedals details | Wellgo LU-313U |
| Rear shock absorber | Not Available |
| Saddle seat | Team Products Embroidered |
| Seat post extension | 25.4 (millimeters) DiameterPrimo Rod |
Useful links and guides ....
- To know more about this exacte bike, Redline provided us with the latest version of its Grom X bike manual
- Find All parts, tires and accessories of Redline Grom X Freestyle here
- Get your Dirtmaster Big Bertha manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Dirtmaster Big Bertha Freestyle here