Redshift Sports ShockStop Endurance Suspension Seatpost - 27.2 x 280mm 35mm Travel Aluminum BLKUltra responsive suspension seatpost provides 35mm of bump eating comfort Minimal, subtle design blends seamlessly with the aesthetic of modern gravel, road, and E Bikes Optimized linkage geometry provides ultra responsive suspension Infinitely adjustable preload stiffness adjustments Swappable springs included for different rider weights Rear offset: 7mm Simple, two bolt saddle clamp with infinite tilt adjustment 6061 T6 aluminum post with 7075 T6