Description The ZOOM Suspension Seatpost reduces vibrations on rough terrain. It's made of lightweight, durable 3D forged aluminum and has an adjustable damper for your riding comfort. Features Smooth Ride : Our seatpost has a special spring for a smoother ride Durable & Clean :It's waterproof and dustproof, so it stays clean inside and doesn't leak oil. Customizable Comfort :You can adjust the saddle angle easily for a more comfortable ride. Hardness Adjustment : Fine-tune shock absorber hardness with a hexagonal wrench for optimal comfort and control. Specs Color: Black Length: 350mm(13.78") Calibre: 31.6mm / 30.4mm Material:Aluminum Compatibility: Ø31.6mm: Ranger Fat Tire Electric Bike Prado S Commuter Electric Bike Ghost Electric Mountain Bike Rover Step-Thru Electric Bike Ø30.4mm: Pony Compact Step-Thru Electric Bike Grace Step-Thru Electric Bike Grace 2.0 Step-Thru Electric Bike Breeze T Torque Sensor Electric Bike Ranger 2.0 Fat Tire All-Terrain Electric Bike Ranger Step-Thru 2.0 Torque Sensor Electric Bike Ranger 3.0 Fat Tire All-Terrain Electric Bike Ranger Step-Thru 3.0 Torque Sensor Electric Bike Note: Please read before placing an order.There will be a 10-15 days lead time. They will be shipped from our China Warehouse. Velowave is authorized distributor.