---
product_id: 258684787
title: "HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB)"
brand: "hoist fitness"
price: "917.71 DT"
currency: TND
in_stock: false
reviews_count: 7
url: https://www.desertcart.tn/products/258684787-hoist-fitness-leg-extension-and-leg-curl-optional-attachment-hf
store_origin: TN
region: Tunisia
---

# Compact 21 x 18.75 x 21.25 inches footprint Precision-engineered Alloy Steel & Aluminum Supports up to 250 lbs max load HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB)

**Brand:** hoist fitness
**Price:** 917.71 DT
**Availability:** ❌ Out of Stock

## Summary

> 🏋️‍♂️ Elevate your leg day game with precision and power!

## Quick Answers

- **What is this?** HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB) by hoist fitness
- **How much does it cost?** 917.71 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/258684787-hoist-fitness-leg-extension-and-leg-curl-optional-attachment-hf)

## Best For

- hoist fitness enthusiasts

## Why This Product

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

## Key Features

- • **Space-Smart Design:** Compact dimensions keep your home gym sleek without sacrificing performance.
- • **Upgrade Your Routine:** Pairs perfectly with HOIST Preacher Curl and Accessory Stand for a full-spectrum leg day.
- • **Premium Build Quality:** Crafted from durable alloy steel and aluminum for long-lasting, stable workouts.
- • **Seamless Compatibility:** Designed exclusively for HOIST HF-5165 & HF-5170 benches—no guesswork, just perfect fit.
- • **Dual Function Powerhouse:** Switch effortlessly between leg extensions and curls to target every muscle fiber.

## Overview

The HOIST Fitness Leg Extension & Leg Curl Attachment (HF-OPT-4000-01-MB) is a robust, precision-engineered accessory designed exclusively for the HF-5165 and HF-5170 benches. Constructed from premium alloy steel and aluminum, it supports up to 250 pounds and offers dual-function leg workouts in a compact footprint, making it an essential upgrade for serious home gym enthusiasts.

## Description

Leg Extension/Leg Curl attachment option for *HF-5165 7 Position F.I.D. Bench* and HF-5170 7 Position F.I.D. Olympic Bench. Recommended to pair with *HF-OPT-4000-02 Preacher Curl* attachment.

## Features

- Leg Extension/Leg Curl attachment option for *HF-5165 7 Position F.I.D. Bench* and HF-5170 7 Position F.I.D. Olympic Bench
- Recommended to pair with *HF-OPT-4000-02 Preacher Curl* attachment and *HF-5000-03 Accessory Stand*
- Will not work with any bench other than the HOIST HF-5165, and HF-5170.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | HOIST FITNESS |
| Item Weight | 22 Pounds |
| Material | Aluminum, Alloy Steel |
| Color | Platinum |
| Product Dimensions | 21"D x 18.75"W x 21.25"H |
| Frame Material | Alloy Steel, Aluminum |
| Weight Limit | 250 Pounds |
| Manufacturer | HOIST Fitness |
| UPC | 850020202737 |
| Package Weight | 22 Pounds |
| Item Dimensions  LxWxH | 21 x 18.75 x 21.25 inches |
| Brand Name | HOIST FITNESS |
| Part Number | HF-OPT-4000-01-MB |

## Product Details

- **Brand:** HOIST FITNESS
- **Item Weight:** 22 Pounds
- **Material:** Aluminum, Alloy Steel
- **Color:** Platinum
- **Product Dimensions:** 21"D x 18.75"W x 21.25"H
- **Frame Material:** Alloy Steel, Aluminum
- **Weight Limit:** 250 Pounds
- **Manufacturer:** HOIST Fitness
- **UPC:** 850020202737

## Images

![HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB) - Image 1](https://m.media-amazon.com/images/I/51bIpAJSYTL.jpg)
![HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB) - Image 2](https://m.media-amazon.com/images/I/51mg7suRjAL.jpg)
![HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB) - Image 3](https://m.media-amazon.com/images/I/51c5p7p9KIL.jpg)
![HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB) - Image 4](https://m.media-amazon.com/images/I/51n-f0QCuAL.jpg)
![HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB) - Image 5](https://m.media-amazon.com/images/I/51TGC9+4i3L.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Will this work with a bow flex adjustable bench?**
A: not recommended for use with  products other than HOIST brand, specifically HOIST HF-5165 and HOIST HF-5170 bench models.

**Q: What size is the insert? Will it fit a 2x2 opening?**
A: Hello, the size of the tube is 1.5" X 1.5" and the receiving opening is 1.5" x 1.5"

**Q: Will this work with 1” plates also?**
A: No, this will only work with 2" Olympic style plates.

**Q: Can they also lock down so you can use them as "lock downs" instead of curls?**
A: the swivel rollers cannot be locked into position, but you can use the fixed rollers (Top rollers closest o the bench) as lock downs for sit ups.
also, the original accessory that comes with the bench works better for lock downs.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good equipment with bonus
*by M***O on April 19, 2024*

Attachment does precisely what it's built for; sturdy and durable. Bonus opportunity- assembly requires a husband and wife tandem to test the stability of their relationship.

### ⭐⭐⭐⭐⭐ Another great add on for hoist set
*by J***2 on July 17, 2023*

Some assembly required but sturdy and smooth once put together works well with the hoist adjustable bench easy to store with other attachments on available secondary stand as well

### ⭐⭐⭐⭐⭐ Well made
*by R***E on July 31, 2023*

Very happy, this does fit my old style Hoist bench.

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**Shop now:** [https://www.desertcart.tn/products/258684787-hoist-fitness-leg-extension-and-leg-curl-optional-attachment-hf](https://www.desertcart.tn/products/258684787-hoist-fitness-leg-extension-and-leg-curl-optional-attachment-hf)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-01-23*