Rock 'n' Roll Gold Lube is the middle child of their three chain lubes. It's not as thick as the Extreme and not as thin as the Absolute Dry. It's good for both mountain biking as well as high-performance road riding. The folks at Rock 'n' Roll say this one gives the best chain performance in terms of making your shifting faster. Gold lube makes a geared bike feel like a fixed-gear; the movement is that smooth. Like the Extreme, the Gold has a gel membrane suspended in the fluid. The membrane seeps deep into the rollers and stays there, keeping the metal parts flexing, moving smoothly, shifting crisply, and doing everything quietly.