--- product_id: 2424637 title: "Origin8 Shifter Mount OR8 DOWNTUBE ADPTR 31.8/28.6 BK" brand: "origin8" price: "8.76 DT" currency: TND in_stock: false reviews_count: 9 url: https://www.desertcart.tn/products/2424637-origin8-shifter-mount-or8-downtube-adptr-31-8-28-6 store_origin: TN region: Tunisia --- # Fits 28.6-31.8mm Sleek Black Finish Machined Alloy Origin8 Shifter Mount OR8 DOWNTUBE ADPTR 31.8/28.6 BK **Brand:** origin8 **Price:** 8.76 DT **Availability:** ❌ Out of Stock ## Summary > πŸš΄β€β™‚οΈ Shift into Style with Origin8! ## Quick Answers - **What is this?** Origin8 Shifter Mount OR8 DOWNTUBE ADPTR 31.8/28.6 BK by origin8 - **How much does it cost?** 8.76 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/2424637-origin8-shifter-mount-or8-downtube-adptr-31-8-28-6) ## Best For - origin8 enthusiasts ## Why This Product - Trusted origin8 brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Universal Fit:** Easily adapts to frame tubes from 28.6mm to 31.8mm with included shim. - β€’ **Elevate Your Ride:** Transform your bike with a sleek downtube shifter mount. - β€’ **Stylish Aesthetic:** The black anodized finish adds a touch of elegance to your bike. - β€’ **Precision Engineering:** Crafted from high-quality machined aluminum for durability. - β€’ **Effortless Installation:** Comes with all necessary mounting hardware for a quick setup. ## Overview The Origin8 Shifter Mount OR8 DOWNTUBE ADPTR is a high-quality, machined aluminum accessory designed for cyclists looking to mount downtube shifters on bikes without braze-ons. It fits frame tubes ranging from 28.6mm to 31.8mm and includes all necessary mounting hardware and shims for easy installation. The sleek black anodized finish not only enhances durability but also adds a stylish touch to your bike. ## Description SHIFTER MOUNT OR8 DOWNTUBE ADPTR 31.8/28.6 BK Review: Quality parts. Worked to convert a Japanese Road bike to a Flat-Bar - Worked perfectly to convert my old Japanese road bike to a flat bar. Review: Good Product - If you want to upgrade from friction shifters to indexed shifters, this is a good alternative in the absence of braze-on lugs. I like the way the mount/clamp is hinged...instead of the traditional/original metal shifter clamp that usually has to be bent to get around the downtube. It's sturdy and constructed well. The adapters that are included for various size frame tubing ensure a good fit. The only drawback is that the thickness of the mount/clamp causes both shifters to stand off the downtube about a quarter inch (~6.3mm) more on each side than they do with the traditional/original clamp style. I used this mount with Shimano index downtube shifters. The shifters work as they should, it's just that they stand off the downtube a bit farther than usual. If you're OK with that then this is a very good product for the price. ## Features - Perfect for mounting downtube shifters on bikes with no braze-ons - Machined alloy construction - Fits frame tubes 28.6 (1-1/8") to 31.8 (1-1/4") (w/ shim) - Black anodized finish ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007Q4NKN2 | | Additional Features | Portable | | Best Sellers Rank | #793,740 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #394 in Bike Shifters | | Brand Name | Origin8 | | Color | Multicolor | | Customer Reviews | 3.8 out of 5 stars 20 Reviews | | Finish Types | Natural | | Global Trade Identification Number | 00072774539000 | | Included Components | Mountain Shifter Part | | Indoor Outdoor Usage | Outdoor | | Item Weight | 2.08 ounces | | Manufacturer | Origin8 | | Manufacturer Part Number | 53900 | | Manufacturer Warranty Description | Limited Warranty | | Material | Multiple | | Material Type | Multiple | | Model Number | DownTube Shifter Adapter | | Mounting Type | Frame Mount | | Number of Shelves | 1 | | Recommended Uses For Product | Bicycles | | Required Assembly | No | | Room Type | Bathroom | | Shelf Type | Cantilever Rack | | Special Feature | Portable | | Style Name | Mountain Shifter Part | | UPC | 072774539000 | | Unit Count | 1.0 Count | ## Images ![Origin8 Shifter Mount OR8 DOWNTUBE ADPTR 31.8/28.6 BK - Image 1](https://m.media-amazon.com/images/I/41xx8ZfpO0L.jpg) ![Origin8 Shifter Mount OR8 DOWNTUBE ADPTR 31.8/28.6 BK - Image 2](https://m.media-amazon.com/images/I/41N0TJJQz1L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality parts. Worked to convert a Japanese Road bike to a Flat-Bar *by R***I on August 4, 2018* Worked perfectly to convert my old Japanese road bike to a flat bar. ### ⭐⭐⭐⭐ Good Product *by M***E on July 28, 2017* If you want to upgrade from friction shifters to indexed shifters, this is a good alternative in the absence of braze-on lugs. I like the way the mount/clamp is hinged...instead of the traditional/original metal shifter clamp that usually has to be bent to get around the downtube. It's sturdy and constructed well. The adapters that are included for various size frame tubing ensure a good fit. The only drawback is that the thickness of the mount/clamp causes both shifters to stand off the downtube about a quarter inch (~6.3mm) more on each side than they do with the traditional/original clamp style. I used this mount with Shimano index downtube shifters. The shifters work as they should, it's just that they stand off the downtube a bit farther than usual. If you're OK with that then this is a very good product for the price. ### ⭐ Doesn’t fit vintage Shimano Dura Ace 7400 indexing downtube shifters *by S***Y on June 27, 2020* The overall quality is fine although they are a little on the large side. The problem is the fit. Trying to install with ~1985 Shimano Dura Ace 7400 indexing downtube shifters. This product did not work. First problem was the boss was too large. I trued to sand it down and it began to fit but was a pain most people would not have the tools to sand it flat. Second problem was the boss was too short with The installation of the boss cover. So I tried to sand that down and it just did not work out. --- ## 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.tn/products/2424637-origin8-shifter-mount-or8-downtube-adptr-31-8-28-6](https://www.desertcart.tn/products/2424637-origin8-shifter-mount-or8-downtube-adptr-31-8-28-6) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-09*