---
product_id: 3593971
title: "Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror"
brand: "fit system"
price: "S/.330"
currency: PEN
in_stock: true
url: https://www.desertcart.pe/products/3593971-fit-system-3891-deluxe-universal-clip-on-trailer-towing-mirror
store_origin: PE
region: Peru
---

# Fits mirrors up to 11.5" tall Ratcheting lock system for vibration-free stability Extra-large 5"x8" mirror head for max visibility Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror

**Brand:** fit system
**Price:** S/.330
**Availability:** ✅ In Stock

## Summary

> 🚛 See More, Tow Smarter: The Ultimate Clip-On Mirror Upgrade

## Quick Answers

- **What is this?** Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror by fit system
- **How much does it cost?** S/.330 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/3593971-fit-system-3891-deluxe-universal-clip-on-trailer-towing-mirror)

## Best For

- fit system enthusiasts

## Why This Product

- Trusted fit system brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Vibration-Free Vision:** Dual ratcheting straps lock tight to eliminate annoying mirror shake on the road.
- • **Maximized Field of View:** Extra-large mirror head expands your towing vision without blocking your original mirror.
- • **Tow Wide, Tow Confident:** Perfect for hauling oversized loads with enhanced side visibility—stay safe and in control.
- • **Mirror-Friendly Mounting:** Rubber-padded straps protect your existing mirrors from scratches and damage.
- • **Universal Fit, Zero Hassle:** Clip-on design fits most mirrors up to 11.5" tall—no tools needed, no stress.

## Overview

The Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror is a large, easy-to-install towing mirror designed to fit most vehicle mirrors up to 11.5 inches tall. Featuring a 5"x8" mirror head with a ratcheting lock system and rubber-padded straps, it provides enhanced side visibility while reducing vibrations and protecting your existing mirrors. Ideal for towing wide loads safely and confidently.

## Description

Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror

## Features

- Fit all mirror up to 11 1/2" tall
- Secure Mounting Hardware
- The mirror head is 5” x 8” with a viewing area of approximately 5 1/8” x 7 ¾”. The mounting bracket area is approximately 4 ½” x 11 ½”
- Adds the extra vision to tow wide loads without interfering with your existing mirror.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Auto Part Position | Front |
| Item dimensions L x W x H | 17.5 x 6.6 x 4 inches |
| Brand | Fit System |
| Color | black |
| Mounting Type | Universal Mount |
| Included Components | K-Source 3891 Towing Mirror Ratchet Mount |
| Special Feature | Extra large mirror ,Reachet lock system |
| Item Weight | 1.5 Pounds |
| Fit Type | Universal Fit |
| Size | Large |
| Shape | Rectangular |
| Global Trade Identification Number | 00759746389107 |
| Automotive Fit Type | Universal Fit |
| Manufacturer | K-SOURCE |
| UPC | 759746389107 |
| Model | 3891 |
| Item Weight | 1.5 pounds |
| Product Dimensions | 17.5 x 6.6 x 4 inches |
| Item model number | 3891 |
| Batteries | 1 Unknown batteries required. |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 3891 |
| Special Features | Extra large mirror ,Reachet lock system |
| Lift Type | Manual |

## Product Details

- **Auto Part Position:** Front
- **Item dimensions L x W x H:** 17.5 x 6.6 x 4 inches
- **Brand:** Fit System
- **Color:** black
- **Mounting Type:** Universal Mount
- **Included Components:** K-Source 3891 Towing Mirror Ratchet Mount
- **Special Feature:** Extra large mirror ,Reachet lock system
- **Item Weight:** 1.5 Pounds
- **Fit Type:** Universal Fit
- **Size:** Large

## Images

![Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror - Image 1](https://m.media-amazon.com/images/I/512QlOml8hL.jpg)

## Questions & Answers

**Q: Is this a set of mirrors for the price or priced per mirror?**
A: Price is for one mirror...

**Q: Do you notice the wind noise this has when you're on the highway (say 60-75mph)?**
A: Several years ago I had a similar set of mirrors and they vibrated on this same vehicle.  This set fits great and does not vibrate, therefore I do not believe you will get any wind noise.  It hasn't been warm enough to have the windows down here yet this year.  Can't hear anything with the windows up.  With the ratchet system they fit extremely tight and I can't imagine them providing wind noise.

**Q: can these mirrors be turned horzontal or do they have to stay vertical**
A: They can be switched horizontal or vertical.  Loosen screw on the back and the mirror will come off to be repositioned vertical or horizontal.

**Q: Will this fit a 2016 Buick Encore?**
A: Yes, they are universal to any mirror

## Frequently Bought Together

- Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror
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**Shop now:** [https://www.desertcart.pe/products/3593971-fit-system-3891-deluxe-universal-clip-on-trailer-towing-mirror](https://www.desertcart.pe/products/3593971-fit-system-3891-deluxe-universal-clip-on-trailer-towing-mirror)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-01-26*