The TRANZX SI13J Internal Cable Dropper Seat Post features adjustable travel from 140mm to 170mm, allowing for precise ride height tuning in 5mm increments. With a 31.6mm diameter, it ensures a secure fit. Made from durable alloy #7075-T651, it is designed for rigorous use. The sandblasted black finish and hard anodized shaft offer a sleek look and long-lasting performance. An included up/down dropper lever allows for easy adjustments, making it ideal for riders seeking versatile seat post options. SKU: JD-SI13J-316-140-170.