PNW Rainier IR Internal Route Dropper Post, 170mm Travel, 31.6mm- Gen 3


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  • It’s 2020 and PNW likes to customize everything from our kicks to our vitamins. We wanted to take that customization lifestyle into the world of droppers with the updated Rainier IR. The past version of this post is known for its consistency and reliability. While maintaining those qualities, this new iteration focuses on fitting more bikes and providing refined adjustability for the rider.

    So how did they do it? First, they leveraged their new tool-less travel adjust system, which allows for a total of 30mm travel reduction in 5mm increments. If you were riding that line between a 170mm and 200mm dropper you can now fine-tune the perfect fit. Like finding the perfect chamois that holds you close but doesn’t create an excess of muffin top.

    Secondly, the redesigned Rainier is significantly shorter than our other posts.

    They scrubbed the overall length of the post by minimizing the size of the bottom actuator and shortening the lower tube.

    Overall length reductions vary by travel but we were able to knock out 27.5mm of the overall length from our 125mm size.

    Combining all of these changes means this version of the Rainier can fit into more bikes while also maximizing the amount of travel available.

    That is some pretty nifty design if we do say so ourselves.

    What does this do for your riding experience? In the past, riders often had to choose a shorter travel post than they would prefer in order to get the correct fit. Now, with the 5mm incremental change riders can get the exact amount of travel they desire. The beauty of this system is the simplicity. You can literally pull off to the side of the trail and adjust the travel with nothing but your fingernail. Seriously, it’s that easy!

    How to Use the Tool-less Travel Adjust System:

    1. Begin by lowering dropper at or below the desired travel length (just make sure it’s not fully extended).
    2. Unthread the midcap with your hand and slide it up to reveal the white DU Bushing.
    3. You’ll see negative numbers with corresponding notches machined into the post (each number represents decreasing travel).
    4. Slide the DU bushing up and rotate it to align the black arrow with the amount of travel you would like to reduce, then seat the arrow into the machined groove.
    5. After pushing the DU bushing back down lower the midcap and hand tighten (no need to go overboard!) and ride off into the sunset with the perfect travel for you.
    PNW Rainier Dropper Seatpost Dropper Seatpost UPC: 850005672814
  • United States Shipping:

    Everything in the entire store ships for free to the USA, it's that simple, no catch. The free service will likely be USPS or FedEx depending on the size of the package. Please see our USA Shipping Options page for more info. Everything ships pretty darn fast since we have a shop/shipment center on the West and East Coast.

    International Shipping:

    International shipping is available on 99% of our products. Shipping cost can be calculated on the cart page or during checkout. We are experts at international shipping so please buy with confidence. We have great prices on Usps Priority & Express services, all services will include a tracking number. Please see our International Shipping Options page for more info.


    We offer a 45 day return period on all new items. We want our customers to be happy and returns to be easy. Please see our Return Policy FAQ's page for more info.

Sku: RDP316170V3

Mpn: RDP316170V3

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