Defy Advanced SL 0 Eyewear Lens Colors-Smoke Lens Surly track cogs are threaded

Surly track cogs are threaded the same as a BMX freewheel (1

Minimal overlap in tread features means a more supple compliant ride feel

Material Alloy Narrow-Wide Design X-Sync 2 Position Single Chainring Comp

Cassette: Shimano CS-HG500

Defy Advanced SL 0 Eyewear Lens Colors-Smoke Lens Surly track cogs are threadedGo long. Go fast. Superlight and silky smooth, the flagship series of the new Defy range is back to reclaim its title as the pinnacle of endurance road. It's the perfect choice for the sportive or gran fondo that's circled on your calendar. Key Performance Factors: Functional simplicity: Free of cumbersome gimmickry, the frameset is one of the lightest in its category. With a perfect balance of high performance reactivity and all day comfort, it