Zero Engineering Type 5 Open Primary vs Ultra Ground Pounder ST (2021)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Zero Engineering Type 5 Open Primarystacks up against the Ultra Ground Pounder ST. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Zero Engineering Type 5 Open Primary | Ultra Ground Pounder ST |
|---|---|---|
| Model year | 2016 | 2021 |
| Price | — | $22,490 |
| Engine | 1570 cc | 1852 cc |
| Seat height | 26 mm | 24 mm |
| Fuel capacity | 2.2 L | — |
| Fuel type | petrol | petrol |
| Transmission | 5-speed | 6-speed |
| Front brakes | Single disc. Hydraulic | Single disc |
| Rear brakes | Single disc. Hydraulic | Single disc |
| Tires | 5.00-16 / 5.00-16 | 120-21 / 250-18 |
Zero Engineering Type 5 Open Primary vs Ultra Ground Pounder ST — which should you buy?
Picking between the Zero Engineering Type 5 Open Primary and the Ultra Ground Pounder ST usually comes down to the numbers you care about most. On paper, the Zero Engineering Type 5 Open Primary brings its published horsepower, while the Ultra Ground Pounder ST counters with its own power figure.
Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike:

