--- product_id: 258684787 title: "HOIST Fitness Leg Extension & Leg Curl Optional Attachment (HF-OPT-4000-01-MB)" brand: "hoist fitness" price: "Β₯36080" currency: JPY in_stock: false reviews_count: 7 url: https://www.desertcart.jp/products/258684787-hoist-fitness-leg-extension-and-leg-curl-optional-attachment-hf store_origin: JP region: Japan --- # 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:** Β₯36080 **Availability:** ❌ Out of Stock ## Summary > πŸ‹οΈβ€β™‚οΈ 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?** Β₯36080 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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 - β€’ **Space-Smart Design:** Compact dimensions keep your home gym sleek without sacrificing performance. - β€’ **Upgrade Your Routine:** Pairs perfectly with HOIST Preacher Curl and Accessory Stand for a full-spectrum leg day. - β€’ **Premium Build Quality:** Crafted from durable alloy steel and aluminum for long-lasting, stable workouts. - β€’ **Seamless Compatibility:** Designed exclusively for HOIST HF-5165 & HF-5170 benchesβ€”no guesswork, just perfect fit. - β€’ **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. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/258684787-hoist-fitness-leg-extension-and-leg-curl-optional-attachment-hf](https://www.desertcart.jp/products/258684787-hoist-fitness-leg-extension-and-leg-curl-optional-attachment-hf) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-01*