--- product_id: 509159633 title: "EXA Form 900i 30.9mm/31.6mm Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length)" brand: "jfoyh" price: "10991388₫" currency: VND in_stock: true reviews_count: 6 category: "Jfoyh" url: https://www.desertcart.vn/products/509159633-exa-form-900i-30-9mm-31-6mm-dropper-seatpost-100mm store_origin: VN region: Vietnam --- # 30.9mm or 31.6mm diameter fit Internal cable routing for sleek setup Remote lever for on-the-fly height adjust EXA Form 900i 30.9mm/31.6mm Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length) **Brand:** jfoyh **Price:** 10991388₫ **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Elevate your ride, drop in style—control at your fingertips! ## Quick Answers - **What is this?** EXA Form 900i 30.9mm/31.6mm Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length) by jfoyh - **How much does it cost?** 10991388₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/509159633-exa-form-900i-30-9mm-31-6mm-dropper-seatpost-100mm) ## Best For - jfoyh enthusiasts ## Why This Product - Trusted jfoyh brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Instant Height Control:** Remote cable lever lets you adjust seat height mid-ride—no stops, no interruptions, just smooth transitions. - • **Lightweight Durability:** Crafted from premium 7075 aluminum alloy, balancing robust strength with featherlight weight (480g–670g). - • **Streamlined Aesthetics:** Internal cable routing keeps your bike frame clean and professional-looking, perfect for the style-conscious rider. - • **Tailored Travel Options:** Select from 100mm, 125mm, or 150mm travel lengths to match your riding style and terrain demands. - • **Precision Fit, Zero Hassle:** Choose between 30.9mm or 31.6mm diameters to guarantee seamless installation and optimal performance. ## Overview The EXA Form 900i dropper seatpost offers professional-grade performance with precise diameter options (30.9mm or 31.6mm) and multiple travel lengths (100mm to 150mm). Designed for internal cable routing, it delivers a sleek, clutter-free look while enabling remote-controlled height adjustments on the fly. Constructed from durable yet lightweight 7075 aluminum alloy, this seatpost is engineered for millennial riders who demand both style and function in their cycling gear. ## Description Shop JFOYH 30.9mm/31.6mm Hydraulic Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length)-900i 31.6mm*445mm*150mm. Free delivery and returns on all eligible orders. Review: Ok but some parts are substandard - After fitting the seatpost and attaching the lever the bolt holding the clamp for the handlebars sheared off after the second use during testing. Review: No está fácil la instalación, pero entendiéndole queda muy bien y funciona perfectamente. Muy recomendable! ## Features - 📢Choosing The Correct Diameter is Crucial: It is essential to select the right diameter (30.9mm or 31.6mm) based on the inner diameter of your bicycle frame's seat tube. Choosing the wrong diameter can result in an inability to install. REMEMBER, selecting the correct diameter is crucial to ensure a proper fit. - 📢Internal Cable Routing and Easy Installation: This dropper post is designed for frames with internal cable routing, providing a clean and organized appearance. The installation process is simple, and you can refer to instructional videos for guidance. - 📢Convenient Remote-controlled Height Adjustment: With the included remote lever, you can easily adjust the seat height while riding, eliminating the need to stop and manually adjust the seat position. - 📢Durable and Lightweight Construction: The seat post is made of 7075 alloy tube, which offers durability while remaining lightweight. The weight varies depending on the length, with the shortest version weighing approximately 480g and the longest version weighing around 670g. - 📢Different length and stroke options available: The seat post comes in three length options (345mm, 395mm, and 445mm) and corresponding stroke options (100mm, 120mm, and 150mm, respectively). Choose the combination that suits your preferences and riding style. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09YH576CH | | Best Sellers Rank | 269,053 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 479 in Cycling Seat Posts | | Bike Type | Multi-Use | | Brand Name | JFOYH | | Colour | Diameter: 31.6mm | | Customer Reviews | 4.2 4.2 out of 5 stars (260) | | Item Dimensions W x H | 32W x 445H millimetres | | Item Type Name | Internal Routing | | Item Weight | 0.87 Kilograms | | Manufacturer | JFOYH BIKE | | Manufacturer Part Number | BIKE DROPPER SEATPOST | | Material Type | Aluminium | | Model Number | Diameter: 31.6mm | | UPC | 774144172137 | ## Product Details - **Brand:** JFOYH - **Colour:** Diameter: 31.6mm - **Item weight:** 0.87 Kilograms - **Material:** Aluminium - **Product dimensions:** 32W x 445H millimetres ## Images ![EXA Form 900i 30.9mm/31.6mm Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length) - Image 1](https://m.media-amazon.com/images/I/61D4iUwD08L.jpg) ![EXA Form 900i 30.9mm/31.6mm Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length) - Image 2](https://m.media-amazon.com/images/I/61BDX2UGmUL.jpg) ![EXA Form 900i 30.9mm/31.6mm Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length) - Image 3](https://m.media-amazon.com/images/I/71o8VNeN2PL.jpg) ![EXA Form 900i 30.9mm/31.6mm Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length) - Image 4](https://m.media-amazon.com/images/I/519w3738ekL.jpg) ![EXA Form 900i 30.9mm/31.6mm Dropper Seatpost 100mm/125mm/150mm Travel Remote Cable Control Dropper Post for Internal Routing Bike Frame(345mm/395mm/445mm Length) - Image 5](https://m.media-amazon.com/images/I/71t4fv8JvsL.jpg) ## Available Options This product comes in different **Size, Model** options. ## Questions & Answers **Q: What type of lever is included in the package? 1X lever? 2X lever?** A: It's coming with standard 1x lever. **Q: Is it coming with cable in housing?** A: Yes, it's coming with cable in housing, ahout 1500mm. **Q: How to install this dropper post?** A: The installation process is simple, we have also shot an installation tutorial for you, please watch our product related videos. **Q: Is 900i dropper post only for internal routing frame?** A: Yes, 900i only for internal routinbg frame. **Q: How Much Rotational Play Is Normal?** A: 1-3mm of rotation is normal. Without a bit of wiggle room between the stanchion and the mid cap bushing, the dirt and grime that makes its way into your dropper could do some serious damage. ## Customer Reviews ### ⭐⭐ Ok but some parts are substandard *by N***R on 28 July 2025* After fitting the seatpost and attaching the lever the bolt holding the clamp for the handlebars sheared off after the second use during testing. ### ⭐⭐⭐⭐⭐ Review *by A***R on 12 January 2026* No está fácil la instalación, pero entendiéndole queda muy bien y funciona perfectamente. Muy recomendable! ### ⭐⭐⭐⭐⭐ Review *by B***3 on 29 March 2025* This dropper functions as described. Six month test has gone well as I ride mainly blue trails with the occasional black 2-3 times a week. Only thing to note is I have to slightly stand and relieve tension from post in order for it to drop easier, ie: slightly stand, engage thumb trigger, sit on post to drop. Great post for the budget minded. Highly recommend. Hope this helps. Happy shopping. ## Frequently Bought Together - EXA Form 900i 30.9mm/31.6mm Dropper Post with Remote Lever and Cable Kit MTB/Ebike Internal Routing Dropper Seatpost for Mountain Bike(100mm/125mm/150mm Travel) - Andeshunk Mountain Bike Crankset Hollow Integrated Crank axle Modified Single disc Crank 32T 34 36T --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/509159633-exa-form-900i-30-9mm-31-6mm-dropper-seatpost-100mm](https://www.desertcart.vn/products/509159633-exa-form-900i-30-9mm-31-6mm-dropper-seatpost-100mm) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-22*