HIGH PERFORMANCE: The ergonomic T-shaped commence manage offers a degree of software of force for easy and comfy starting. This bicycle engine package only has slight noise (about 75dB) and vibration when applied. You should use it in many outside environments without stressing about sound disturbance. Aspect look at mirror: https://troygbukz.wizzardsblog.com/35007590/bike-engines-copyright-for-dummies