--- product_id: 335507187 title: "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" brand: "tusita" price: "$30.50" currency: USD in_stock: true reviews_count: 13 category: "Tusita" url: https://www.desertcart.us/products/335507187-tusita-seat-post-quarter-turn-mount-compatible-with-garmin-varia store_origin: US region: United States of America --- # Rotatable quarter-turn mount Tool-free install under 60s Fits 3 seatpost sizes (27.2/30.9/31.6mm) 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 **Brand:** tusita **Price:** $30.50 **Availability:** ✅ In Stock ## Summary > 🚴‍♀️ Lock, mount, and dominate your ride with TUSITA precision! ## Quick Answers - **What is this?** 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 by tusita - **How much does it cost?** $30.50 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/335507187-tusita-seat-post-quarter-turn-mount-compatible-with-garmin-varia) ## 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 - • **Ride with Confidence:** Trusted by thousands with a 4.6-star rating and backed by an 18-month warranty. - • **Precision Positioning:** Quarter-turn mount locks your device perfectly for optimal radar performance and safety. - • **Rock-Solid Durability:** Advanced injection-molded co-polymer ensures your radar stays secure on any terrain. - • **Effortless Installation:** Tool-free, under 60-second setup means more ride time, less hassle. - • **Universal Compatibility:** Seamlessly fits Garmin Varia RTL510, RTL515, RVR315 & RearVue 820 for all your cycling radar needs. ## 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 radar and RearVue models, it offers secure, rotatable mounting to enhance your cycling safety and radar performance, backed by an 18-month warranty and top user ratings. ## Description Product description TUSITA Seatpost Quarter Turn Mount - Designed to complement your devices, this mount is strong enough to keep your Varia tail light on your bicycle no matter the terrain. Lightweight, Strong, and Aerodynamic. It very easy to install and disassemble from seat-post of bicycle. Wide Compatibility Compatible with Garmin Varia RTL510 Compatible with Garmin Varia RTL515 Compatible with Garmin Varia RVR315 Compatible with Garmin Varia RearVue 820 Rearview Compatible with Garmin Varia Rearview What's in the Box 1 x TUSITA Seat Post Quarter Turn Mount 3 x Spacers for 27.2mm, 30.9mm and 31.6mm bars 1 x M2.5 Hex Key Wrench Take TUSITA Seatpost MOUNT When You Riding We are confident that upgrading to a TUSITA Varia Seatpost Mount will give you piece of mind knowing you’ve chosen the best way to securely lock and perfectly position your tail light on your bike so you can focus on your goals, whether that be having fun or going fast, or both. The TUSITA seatpost mount created from advanced injection moulded co-polymer, it is sturdy and durable enough to keep your tail light on your bicycle no matter the terrain. Easy to install, more versatile, and more stylish design to complement your radar tail light or bike tail light. 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: Easy to use and well worth it - Great quality and well-built mount. I used the mount that came with the light for a few rides and was hesitant to get a fixed mount due to the angle of my seat post. But decided to give this mount a try and what a difference it made. Easy to install and holds up ride after ride. I liked it so much that I bought another one for my other bike. Highly recommend. ## 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 | #10 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 | Bicycle | | Customer Reviews | 4.6 out of 5 stars 1,378 Reviews | | Enclosure Material | Polycarbonate | | 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 ![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 - Image 1](https://m.media-amazon.com/images/I/61TatcoZmHS.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/51SIJiptCQS.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/61QvWXADdbS.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/51V00A3EswS.jpg) ![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 - Image 5](https://m.media-amazon.com/images/I/619ZFfpahTS.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. ### ⭐⭐⭐⭐⭐ Easy to use and well worth it *by F***N on November 22, 2025* Great quality and well-built mount. I used the mount that came with the light for a few rides and was hesitant to get a fixed mount due to the angle of my seat post. But decided to give this mount a try and what a difference it made. Easy to install and holds up ride after ride. I liked it so much that I bought another one for my other bike. Highly recommend. ### ⭐⭐⭐⭐⭐ Solid product *by P***C on March 20, 2026* Works well. No problems! ## 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.us/products/335507187-tusita-seat-post-quarter-turn-mount-compatible-with-garmin-varia](https://www.desertcart.us/products/335507187-tusita-seat-post-quarter-turn-mount-compatible-with-garmin-varia) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*