--- product_id: 335507187 title: "Seat Post Quarter Turn Mount Compatible with Garmin Varia RTL510 RTL515 RVR315, RearVue 820 Rearview - Fit 27.2mm 30.9mm 31.6mm Bars Seatpost" brand: "tusita" price: "98.54 DT" currency: TND in_stock: true reviews_count: 13 category: "Tusita" url: https://www.desertcart.tn/products/335507187-seat-post-quarter-turn-mount-compatible-with-garmin-varia-rtl510 store_origin: TN region: Tunisia --- # Rotatable quarter-turn mount Tool-free install <60s Fits 3 seatpost sizes Seat Post Quarter Turn Mount Compatible with Garmin Varia RTL510 RTL515 RVR315, RearVue 820 Rearview - Fit 27.2mm 30.9mm 31.6mm Bars Seatpost **Brand:** tusita **Price:** 98.54 DT **Availability:** ✅ In Stock ## Summary > 🚴‍♀️ Lock, Rotate, Ride: Elevate your bike radar game in seconds! ## Quick Answers - **What is this?** Seat Post Quarter Turn Mount Compatible with Garmin Varia RTL510 RTL515 RVR315, RearVue 820 Rearview - Fit 27.2mm 30.9mm 31.6mm Bars Seatpost by tusita - **How much does it cost?** 98.54 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/335507187-seat-post-quarter-turn-mount-compatible-with-garmin-varia-rtl510) ## Best For - tusita enthusiasts ## Why This Product - Trusted tusita brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Build:** Advanced injection-molded co-polymer ensures rock-solid security on any terrain - • **Secure & Stable:** Lock your Varia radar or tail light with confidence for safer, smarter rides - • **Versatile & Rotatable:** Adjust your device angle easily with the quarter-turn mount for optimal visibility - • **Effortless Installation:** Tool-free, under 60 seconds setup means more ride time, less hassle - • **Universal Compatibility:** Seamlessly fits Garmin Varia RTL510, RTL515, RVR315 & RearVue 820 on 27.2/30.9/31.6mm seatposts ## Overview The TUSITA Seat Post Quarter Turn Mount is a robust, injection-molded polymer accessory designed for quick, tool-free installation on 27.2mm, 30.9mm, and 31.6mm bike seatposts. Compatible with Garmin Varia RTL510, RTL515, RVR315, and RearVue 820 devices, it offers a secure, rotatable mounting solution that enhances safety and convenience for road cyclists seeking reliable radar or tail light positioning. ## Description desertcart.com: TUSITA Seat Post Quarter Turn Mount Compatible with Garmin Varia RTL510 RTL515 RVR315, RearVue 820 Rearview - Fit 27.2mm 30.9mm 31.6mm Bars Seatpost : Electronics Review: Does its job simply and superbly. - Works superbly with my Garmin radar on my seat post. Comes with useful shims and locks in securely while allowing for adjustment with a few turns of the screw. Review: Do Not Hesitate to Buy This - Solid, strong Mount. Fits securely on my 27.5 post. Great product ! ## Features - 【Wide Compatibility】This seat post quarter turn mount compatible with Garmin Varia Rearview Bike Radar, Varia RTL510, Varia RTL515, Varia RVR315, Varia RearVue 820. It is widely used in road bikes with 27.2mm, 30.9mm and 31.6mm bars, help to keep your Varia radar or tail light on your bicycle no matter the terrain - 【More Versatile】Compatible with Variant Rearview Radar, Variant Smart Bike Lights - 【Durable Construction】Created from advanced injection moulded co-polymer. It is strong enough to keep your Varia radar or tail light on your bicycle no matter the terrain - 【Safe & Secure】We are confident that upgrading to a TUSITA Varia seat post Mount will give you piece of mind knowing you’ve chosen the best way to securely lock and perfectly position your Varia radar or tail light on your bike so you can focus on your goals, whether that be having fun or going fast, or both - 【Quick & Easy to Install】Mount on your bicycles handlebars in under 60 seconds.Convenient tool-free installation makes it very easy to install and disassemble from any bicycle seatpost bars,only need to locate and lock nut ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B097XS7SFF | | Additional Features | Rotatable | | Best Sellers Rank | #42 in GPS Vehicle Mounts | | Brand | TUSITA | | Built-In Media | 1 x TUSITA Seat Post Quarter Turn Mount | | Color | Black | | Compatible Devices | Diameter 27.2mm 30.9mm 31.6mm Seatpost, Garmin Varia Rearview Bike Radar RTL510 RTL515 RVR315, Varia RearVue 820 Compatible Devices Diameter 27.2mm 30.9mm 31.6mm Seatpost, Garmin Varia Rearview Bike Radar RTL510 RTL515 RVR315, Varia RearVue 820 See more | | Compatible Phone Models | Varia RTL510 RTL515 RVR315, Varia RearVue 820, Varia Rearview Radar | | Compatible with Vehicle Type | Bike | | Customer Reviews | 4.6 out of 5 stars 1,115 Reviews | | Enclosure Material | polymer | | Item Weight | 2.08 ounces | | Manufacturer | TUSITA | | Model Name | TUSITA Seat Post Quarter Turn Mount | | Model Number | Seat Post Quarter Turn Mount | | Mounting Type | Seat Post | | Special Feature | Rotatable | | Warranty Description | 18 months | ## Product Details - **Brand:** TUSITA - **Color:** Black - **Compatible Phone Models:** Varia RTL510 RTL515 RVR315, Varia RearVue 820, Varia Rearview Radar - **Mounting Type:** Seat Post ## Images ![Seat Post Quarter Turn Mount Compatible with Garmin Varia RTL510 RTL515 RVR315, RearVue 820 Rearview - Fit 27.2mm 30.9mm 31.6mm Bars Seatpost - Image 1](https://m.media-amazon.com/images/I/61TatcoZmHS.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does its job simply and superbly. *by M***O on March 3, 2026* Works superbly with my Garmin radar on my seat post. Comes with useful shims and locks in securely while allowing for adjustment with a few turns of the screw. ### ⭐⭐⭐⭐⭐ Do Not Hesitate to Buy This *by J***Z on June 4, 2026* Solid, strong Mount. Fits securely on my 27.5 post. Great product ! ### ⭐⭐⭐⭐⭐ Great for my bike radar *by R***E on May 28, 2026* Great addition to my bike to more permanently attach my bike radar. I have 100 miles so far without any issues. Stem is standard 28.6 mm sized. ## Frequently Bought Together - TUSITA Seat Post Quarter Turn Mount Compatible with Garmin Varia RTL510 RTL515 RVR315 Rearview - Fit 27.2mm 30.9mm 31.6mm Bars Seatpost - Garmin 010-02376-00 Varia RTL515, Cycling Rearview Radar with Tail Light, Visual and Audible Alerts for Vehicles Up to 153 Yards Away - TUSITA Out Front Mount Compatible with Garmin Edge GPS Bike Computer, XOSS G/G+, iGPSPORT - Cycling Handlebar 25.4mm 31.8m --- ## 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.tn/products/335507187-seat-post-quarter-turn-mount-compatible-with-garmin-varia-rtl510](https://www.desertcart.tn/products/335507187-seat-post-quarter-turn-mount-compatible-with-garmin-varia-rtl510) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-02*