Porting a stock throttle body. How to, and is it worth doing?

The LS2 Stream Helmet proves that a comfortable, high quality helmet doesn’t have to break the bank. It all starts with a lightweight, aerodynamic shell made of LS2’s proprietary HTPP composite. The moisture wicking technical fabric comfort liner includes cheek pads cut from one solid piece of high quality foam using LS2’s 3D Laser Technology for a perfect fit and no "hot spots". It’s fully removable and washable so you can keep it fresh. LS2’s Tool-less Quick Release makes swapping shields a br

The brand new LS2 Challenger GT helmet features aggressive styling and ventilation aimed at sport-touring riding. It includes a drop-down sun shield, Pinlock-ready optically correct face shield, removable and washable comfort liner. Solid colors are $299 and graphic options $329. Learn more at LS2 Helmets. | Cycle News

How LS2 Helmets are Tested 😎 | MotoMouse