Gears and transmission
150cc Naked Street Motorcycle Assembly
- Bounding box
- 1980.2 × 1020.0 × 1190.4 mm
- Engine
- Precision B-rep
- Parameters
- 31
- Published
- November 2, 2026
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The prompt
Create a realistic, engineering-grade 3D CAD model of a sporty 150cc naked street motorcycle, based on an aggressive orange-and-black streetfighter motorcycle design. 1. Overall dimensions (mm) - Overall length: 2050 mm - Overall width: 790 mm - Overall height: 1090 mm - Wheelbase: 1370 mm - Seat height: 800 mm - Ground clearance: 165 mm 2. Wheels and tyres - Front tyre: 110/70 R17 - Rear tyre: 140/60 R17 - Front and rear 17-inch alloy wheels - Sporty black 10-spoke alloy rims - Orange rim stripes - Realistic tyre tread pattern 3. Chassis and suspension - Steel tubular motorcycle frame - Front telescopic suspension forks - Rear monoshock suspension - Rear swingarm - Front and rear disc brakes - Realistic brake calipers and brake rotors 4. Engine and transmission - 150cc single-cylinder, 4-stroke engine - Air-cooled engine with realistic cooling fins - Engine crankcase, cylinder head and exhaust system - Chain drive and rear sprocket - Realistic engine mounting brackets 5. Bodywork - Angular orange and glossy black fuel tank - Aggressive streetfighter front headlight housing - LED headlight assembly - Angular side fairings - Black split-seat design with orange stitching - Rear tail section and LED tail light - Front and rear mudguards - Side stand - Rear-view mirrors - Handlebar, grips, levers and footrests 6. Design and appearance - Main colours: Glossy orange and matte black - Sporty naked street motorcycle styling - Sharp aerodynamic body panels - Orange accents on side panels and wheels - Realistic production motorcycle proportions 7. CAD modelling requirements - Create individual editable 3D solid components. - Use accurate mechanical geometry. - Keep all parts as separate components. - Assemble all components in their correct positions. - Ensure wheels are aligned and centred. - Ensure realistic suspension and chassis positioning. - Avoid cartoon, toy, low-poly or Minecraft appearance. - Do not create a simplified concept model. 8. Export - Preferred format: STEP (.step/.stp) - Secondary format: STL and GLB - Provide a complete assembled motorcycle and individual component models. - Units: Millimetres (mm).
Parameters
| Name | Value | Range |
|---|---|---|
| Wheelbase | 1370 mm | 1000 – 2000 |
| Front wheel overall diameter | 600 mm | 500 – 700 |
| Rear wheel overall diameter | 620 mm | 500 – 700 |
| Front tire width | 110 mm | 80 – 150 |
| Rear tire width | 140 mm | 100 – 180 |
| Rim diameter (17 in) | 431.8 mm | 400 – 500 |
| Fork length | 720 mm | 500 – 1000 |
| Fork tube diameter | 45 mm | 30 – 60 |
| Fork rake angle | 25 deg | 15 – 35 |
| Frame length | 900 mm | 700 – 1200 |
| Frame width | 420 mm | 300 – 600 |
| Frame height | 520 mm | 400 – 700 |
| Engine length | 420 mm | 300 – 600 |
| Engine width | 300 mm | 200 – 400 |
| Engine height | 380 mm | 250 – 500 |
| Fuel tank length | 520 mm | 400 – 800 |
| Fuel tank width | 360 mm | 200 – 500 |
| Fuel tank height | 260 mm | 150 – 400 |
| Seat length | 620 mm | 400 – 900 |
| Seat width | 280 mm | 200 – 500 |
| Seat height | 220 mm | 100 – 400 |
| Headlight length | 360 mm | 200 – 500 |
| Headlight width | 300 mm | 200 – 500 |
| Headlight height | 260 mm | 150 – 400 |
| Handlebar width | 790 mm | 500 – 1000 |
| Exhaust overall length | 900 mm | 500 – 1200 |
| Muffler diameter | 120 mm | 80 – 200 |
| Swingarm length | 520 mm | 300 – 800 |
| Monoshock length | 300 mm | 200 – 500 |
| Side stand length | 250 mm | 150 – 400 |
| Ground clearance | 165 mm | 100 – 300 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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