Coast Suspension Dropper IR Seatpost

"The 40mm of suspension in the Coast Dropper Post is more than just a nice-to-have—it’s a must for gravel and hardtail riders looking for smoother rides. The hydraulic cartridge design makes seat adjustments intuitive and reliable, and the external routing option made installation super straightforward for my older hardtail.”

Gravel rides, urban commutes, or loaded bikepacking adventures—no matter the mission, the PNW Components Coast Suspension Dropper Post delivers unmatched comfort and versatility. The integrated 40mm of air suspension takes the edge off washboard roads and unexpected potholes, while the dropper functionality keeps us agile as we shift from climbs to descents.

At the core of this post lies a dual-chamber hydraulic cartridge that balances supple shock absorption with efficient pedaling performance. The tunable air spring allows riders to fine-tune the suspension based on weight and terrain, ensuring optimal comfort across diverse conditions.

The Coast is available with internal or external cable routing, making it compatible with a wide array of gravel, commuter, and XC bikes. With seat tube diameters of 27.2mm, 30.9mm, and 31.6mm, plus travel options of 100mm or 120mm, this dropper post is ready to transform any bike into a more comfortable and capable ride.