--- product_id: 70482144 title: "RMT 27.5\" Mens 21-Speed All-Terrain Mountain Bike, 18\" Aluminum Frame, Twist Shift, Matte Black" brand: "royce union" price: "¥300456" currency: JPY in_stock: true category: "Royce Union" url: https://www.desertcart.jp/products/70482144-rmt-27-5-mens-21-speed-all-terrain-mountain-bike store_origin: JP region: Japan --- # 21-speed Shimano drivetrain Includes full assembly tools 27.5-inch all-terrain wheels RMT 27.5" Mens 21-Speed All-Terrain Mountain Bike, 18" Aluminum Frame, Twist Shift, Matte Black **Brand:** royce union **Price:** ¥300456 **Availability:** ✅ In Stock ## Summary > 🚵‍♂️ Own the trail and the street — ride Royce Union with confidence! ## Quick Answers - **What is this?** RMT 27.5" Mens 21-Speed All-Terrain Mountain Bike, 18" Aluminum Frame, Twist Shift, Matte Black by royce union - **How much does it cost?** ¥300456 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/70482144-rmt-27-5-mens-21-speed-all-terrain-mountain-bike) ## Best For - royce union enthusiasts ## Why This Product - Trusted royce union brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Quick-Adjust Padded Saddle:** Custom comfort with easy height adjustment for your perfect fit. - • **Lightweight 18" Aluminum Frame:** Durable, rust-proof, and engineered for agile handling and acceleration. - • **Reliable Alloy Linear Pull Brakes:** Consistent stopping power when you need it most, backed by a 10-year frame warranty. - • **Versatile 27.5" All-Terrain Wheels:** Optimized tread for smooth rides on gravel paths and city streets alike. - • **Seamless 21-Speed Shimano Drivetrain:** Effortlessly conquer any terrain with precision twist shifting. ## Overview The ROYCE UNION RMT 27.5" Men's Mountain Bike combines a lightweight, rust-resistant 18-inch aluminum frame with a smooth 21-speed Shimano drivetrain and versatile 27.5-inch all-terrain wheels. Designed for both gravel and paved paths, it features a Zoom suspension fork, quick-adjust padded saddle, and reliable alloy linear pull brakes. Delivered with all necessary tools for fast assembly and backed by a limited 10-year frame warranty, this bike is built for durability, performance, and rider comfort. ## Description Quality construction makes the Royce Union RMA a mountain trail bike that performs equally well for gravel paths and for street riding. Backed by our limited 10-year frame warranty (see owner's manual for details), the lightweight hardtail frame is molded from tough 6061 heat-treated aircraft-grade aluminum and will never rust. Durable aluminum, lighter than steel, makes this bike easier to accelerate and easier to handle. We deliver this bike with the tools you need to quickly finish assembly so you can get riding. An alloy quick release binder enables easy height adjustment of the padded saddle for a proper fit. Quality matters and Royce Union makes sure that the quality of the RMA will meet your high expectations. Passionate about the outdoors; Welcome to Royce Union mountain bikes. Since 1904. ## Features - Assembly video under images; RMT is one great bike to ride; the hardtail frame is molded from durable, no-rust aluminum, lighter than steel; that makes this bike easier to accelerate and handle - All tools are included for fast assembly; 18-inch frame is suggested for a minimum inseam of 31.25 inches; 20 and 22 inch frames also available; Zoom suspension fork delivers solid performance - Just twist to shift; the complete Shimano 21-speed drivetrain delivers seamless shifting between gears as you adjust to your path; padded saddle can be easily adjusted for the right fit - 27.5 inch wheels maintain rolling momentum; all-terrain tread pattern provides less rolling resistance than typical mountain bike tires; this mountain bike performs equally well for gravel paths and for paved streets - Machined alloy wheel rims enable superior brake pad contact to enable the alloy linear pull brakes to consistently stop on demand; Kraton grips and pedals feel good and comfortable; limited 10-year warranty (see owner's manual for details) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BRDMH44 | | Additional Features | 21 Speed Shimano Drivetrain, Aluminum Frame, Lightweight, Suspension Fork | | Age Range Description | Adult | | Best Sellers Rank | #1,261,558 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #587 in Mountain Bikes | | Bicycle Drivetrain Type | Derailleur | | Bicycle Gear Shifter Type | Twist Grip | | Bike Type | Mountain Bike | | Brake Style | Linear Pull | | Brand Name | ROYCE UNION | | Color | Matte Black - Men's Bike | | Customer Reviews | 4.1 4.1 out of 5 stars (479) | | Derailleur Configuration | Rear | | EU Spare Part Availability Duration | 10 years | | Frame Material Type | Aluminum | | Global Trade Identification Number | 00028914763088 | | Included Components | Bicycle, Product Manual | | Item Type Name | Mountain Bike | | Item Weight | 42.9 pounds | | Manufacturer | The Huffy Bicycle Company | | Minimum User Height | 31 inches | | Model Name | RMT | | Model Number | 76308 | | Number Of Speeds | 21 | | Size | 27.5 inch wheels - 18 inch frame | | Specific Uses For Product | Trail | | Style Name | 21 Speed | | Suspension Type | Front | | UPC | 028914763088 | | Warranty Description | Limited 10-Year Frame Warranty | | Warranty Type | Limited | | Wheel Material | Alloy | | Wheel Size | 27.5 inches | ## Product Details - **Age Range (Description):** Adult - **Bike Type:** Mountain Bike - **Brand:** ROYCE UNION - **Color:** Matte Black - Men's Bike - **Frame Material:** Aluminum - **Included Components:** Bicycle, Product Manual - **Number of Speeds:** 21 - **Special Feature:** 21 Speed Shimano Drivetrain, Aluminum Frame, Lightweight, Suspension Fork - **Suspension Type:** Front - **Wheel Size:** 27.5 inches ## Images ![RMT 27.5" Mens 21-Speed All-Terrain Mountain Bike, 18" Aluminum Frame, Twist Shift, Matte Black - Image 1](https://m.media-amazon.com/images/I/51tE7xMv-+L.jpg) ![RMT 27.5" Mens 21-Speed All-Terrain Mountain Bike, 18" Aluminum Frame, Twist Shift, Matte Black - Image 2](https://m.media-amazon.com/images/I/61H7j0kkwIL.jpg) ![RMT 27.5" Mens 21-Speed All-Terrain Mountain Bike, 18" Aluminum Frame, Twist Shift, Matte Black - Image 3](https://m.media-amazon.com/images/I/518cnwStTdL.jpg) ![RMT 27.5" Mens 21-Speed All-Terrain Mountain Bike, 18" Aluminum Frame, Twist Shift, Matte Black - Image 4](https://m.media-amazon.com/images/I/51O5YoTHwAL.jpg) ![RMT 27.5" Mens 21-Speed All-Terrain Mountain Bike, 18" Aluminum Frame, Twist Shift, Matte Black - Image 5](https://m.media-amazon.com/images/I/51bR-m9Kb1L.jpg) ## Available Options This product comes in different **Color, Size, Style** options. ## Questions & Answers **Q: What is the weight limit?** A: up to 300 pounds. **Q: How much weight can the bike handle? I weigh 330lbs roughly and am looking for a bike i can use to excercise in a fun way to lose weight.** A: Royce Union does not test or calculate the ultimate weight bearing property of its bicycles. The adult bicycles have been used extensively by riders in the weight range of 200 to 300 pounds. We do not have use information on riders over 300 pounds. Typically it is the dimensions of the individual that makes a Huffy product uncomfortable or unusable , not the weight of the individual. **Q: Does the 20 inch frame fit someone 5 foot 11 inches ?** A: suggest leg inseam would be 34-36" for the 20" frame **Q: Will the assembly easy for beginners?** A: Assembly is very easy. The only disappointing issue I have had is the front rim was bent and cannot get anyone to speak to regarding this. I have had to change the tube a few times already. --- ## 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.jp/products/70482144-rmt-27-5-mens-21-speed-all-terrain-mountain-bike](https://www.desertcart.jp/products/70482144-rmt-27-5-mens-21-speed-all-terrain-mountain-bike) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-23*