RockShox Recon Gold TK - Solo Air 100 mm, (9mm QR, (1-1/8, 29 - Inch),TurnKey Crown Adjust, Black) 1-1/8" aluminum steerer tube for lighter weight TurnKey crown mounted lockout features a patented blowoff design to take the edge off unexpected hits even when the lockout is engaged Using a single Schrader air valve to simultaneously fill both positive and negative air chambers, Solo Air simplifies suspension setup, while retaining the lightweight and plush ride of Dual Air 100mm of air sprung travel