PNW Components Coast Suspension Dropper IR Seatpost

Smooth out rough rides with the Coast Suspension Dropper Post—40mm air suspension plus on-demand drop

What Our Gearhead® Experts Are Saying:

"The Coast Suspension Dropper Post is a game-changer for mixed-terrain rides. The 40mm of tunable air suspension takes the sting out of bumpy gravel trails, and the dropper function makes transitions between climbs and descents effortless. I’ve noticed way less fatigue on long rides, especially when paired with the external routing for easy setup.”

When the path turns rough, we want our gear to work with us, not against us. The PNW Components Coast Suspension Dropper Post delivers exactly that—smoothing out the ride with 40mm of tunable air suspension while giving us the freedom of an on-the-fly seat height adjustment. Whether we´re exploring backcountry gravel, commuting through city streets, or loading up for a bikepacking weekend, this dropper keeps things comfortable and efficient.

Built with a dual-chamber hydraulic cartridge, the Coast provides reliable suspension without the wobble. It’s available in both external and internal routing options, making installation straightforward and clean. With sizes compatible across a range of bikes, this post is our go-to for extra comfort and control on every ride.

Details

• Smooth out gravel, XC, and commuter rides with 40mm of air suspension
• Dropper post functionality allows quick seat height adjustments
• Dual-chamber hydraulic cartridge for stable, wobble-free performance
• Internal and external cable routing options for versatile installation
• Compatible with various seat tube sizes for wide-ranging bike compatibility
• Ideal for hardtails, gravel grinders, and adventure-ready commuters
• Does not include remote for actuating dropper
• Item #PNW0013

Tech Specs

Material

aluminum

Diameter

27.2mm, 30.9mm, 31.6mm

Length

[27.2mm] 385mm, [30.9mm, 31.6mm] 400mm

Offset

0

Travel

[suspension] 40mm, [dropper] (27.2mm) 100mm, (30.9mm, 31.6mm) 120mm

Dropper

cable-actuated

Claimed Weight

[27.2 x 100mm] 596g, [30.9 x 120mm] 596g, [31.6 x 120mm] 610g

Manufacturer Warranty

lifetime