Dirtmaster JUMP 1999 VS Hoffman SD-4 1999 specs comparison
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➜ Dirtmaster Jump price
➜ Hoffman SD-4 price
Dirtmaster Jump
General Infos| Model | Jump |
| Manufacturer | Dirtmaster |
| Year of production | 1999 |
| Current price | 🛒 View Price → |
| Color choice | - Green-Chrome-Plated |
| Sizes | - Pro |
| Sizes | - Pro |
Wheels And Breaking System
| Bike front tire | 20 X 2.25 (inches) Cheng Shin M-110 |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro RBP-341A Rear LeversTektro 910A Rear Brakes |
| Hubs for disc brakes | Formula OV 31 |
| Rims manufacturer | 48-holeAlex X-303 |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight GaugeDa-Sen Steel |
Frame and Body Specs
| Frame materials | 4130 chromoly c |
| Frame type | TIG-welded |
| Handlebar construction | SE Racing Rollbar |
| Handlebar extender | Not Available |
| Handlebar stem details | Kalloy MX-817 |
| Headset size | 1 1/8 (inches) Threadless Tioga TG |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches)KMC 410 |
| 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 Jump Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown4130 Chromoly |
| Fork type | Dirtmaster Dirt Fork |
Other Specs of Dirtmaster Jump
| Component group sets | Not Available |
| Pedals details | Wellgo LU-313 |
| Rear shock absorber | Not Available |
| Saddle seat | Team Products Embroidered |
| Seat post extension | 25.4 (millimeters) DiameterSteel Micro-adjust |
Hoffman SD-4
General Infos| Model | SD-4 |
| Manufacturer | Hoffman |
| Year of production | 1999 |
| Current price | 🛒 View Price → |
| Color choice | - Red-Chrome-Plated |
| Sizes | - Not available |
Wheels And Breaking System
| Bike front tire | 20 X 1.95 (inches) Hoffman Bikes Skidmark |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Dia-Tech MX-1 LeversDia-Compe 990 Brakes |
| Hubs for disc brakes | Alloy |
| Rims manufacturer | 48-holeHB Highroller CP |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight GaugeSteel |
Frame and Body Specs
| Frame materials | 4130 chromoly c |
| Frame type | TIG-welded |
| Handlebar construction | Hoffman Bikes Jumping Bars |
| Handlebar extender | Not Available |
| Handlebar stem details | Hoffman Bikes Super Stem |
| Headset size | 1 1/8 (inches) Threadless Steel With SST Oryg Detangler |
Gearing Specifications
| Bicycle chain | 1/2 X 3/32 (inches)KMC 410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 44 Teeth1-piece Chromoly |
| Gear shift levers | Not Available |
| Rear gear set | Not Available |
Hoffman SD-4 Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown4130 Chromoly |
| Fork type | Hoffman Bikes SD-4 |
Other Specs of Hoffman SD-4
| Component group sets | Not Available |
| Pedals details | Wellgo LU-313 |
| Rear shock absorber | Not Available |
| Saddle seat | HB VL-311 |
| Seat post extension | 25.4 (millimeters) DiameterHB 4130 |
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Useful links and guides ....
- To know more about this exacte bike, Dirtmaster provided us with the latest version of its Jump bike manual
- Find All parts, tires and accessories of Dirtmaster Jump Freestyle here
- Get your Hoffman SD-4 manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Hoffman SD-4 Freestyle here