--- product_id: 635181320 title: "Steel D-Shaped Hole Drive Shaft for 1/18 TRX4M Defender Bronco" brand: "injora" price: "$56.03" currency: USD in_stock: true reviews_count: 5 category: "Injora" url: https://www.desertcart.us/products/635181320-steel-d-shaped-hole-drive-shaft-for-1-18-trx4m store_origin: US region: United States of America --- # Includes screws for seamless installation D-shaped & rounded rectangle holes for ultra-tight fit Hardened stainless steel for max durability Steel D-Shaped Hole Drive Shaft for 1/18 TRX4M Defender Bronco **Brand:** injora **Price:** $56.03 **Availability:** ✅ In Stock ## Summary > ⚙️ Upgrade your TRX4M drive shaft game—because your rig deserves the best! ## Quick Answers - **What is this?** Steel D-Shaped Hole Drive Shaft for 1/18 TRX4M Defender Bronco by injora - **How much does it cost?** $56.03 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/635181320-steel-d-shaped-hole-drive-shaft-for-1-18-trx4m) ## Best For - injora enthusiasts ## Why This Product - Trusted injora brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Fit Design:** D-shaped and rounded rectangle holes ensure zero slippage and perfect power transfer. - • **Complete Installation Kit:** Comes with all screws needed—easy assembly, no extra trips to the hardware store. - • **Trusted Brand Reliability:** INJORA’s proven quality means you’re upgrading with confidence and style. - • **Unbreakable Metal Upgrade:** Transform your TRX4M with rugged steel shafts that outlast plastic every time. - • **Low Center of Gravity Boost:** Heavier shafts stabilize your ride, enhancing control and performance. ## Overview The INJORA Steel D-Shaped Hole Drive Shaft is a precision-engineered, hardened stainless steel upgrade designed exclusively for the 1/18 TRX4M Defender Bronco. Featuring a unique D-shaped and rounded rectangle hole design, it offers a tighter connection to transmission and axles, significantly improving durability and reducing torque twist. Weighing 22g and including all necessary screws, this kit enhances both performance and realism, making it a must-have for serious RC enthusiasts seeking a reliable metal alternative to stock plastic shafts. ## Description Specifications:Material: Hardened SteelWeight: 22g (0.78oz)Color: SilverPackage List:2 * Drive Shafts4 * Screws Review: Solid upgrade from Injora - This is a great upgrade for the stock TRX4M - plastic to metal conversion. It's a no brainer. They're metal so they're a ton stronger than the stock plastic ones. They look way cooler than the stock ones as well. And they're heavier so it helps keep the CoG low. They're also from Injora - one of the most reputable brands in the business. Easy enough to assemble and came with all necessary hardware - a couple of set screws. Make sure when you install them, you install them "in-phase". Google that and you'll see what I mean. Installing this way will help reduce torque twist. Review: Top but with a quirck - Can't argue with the build quality! Definitely a must, especially if upgrading for a brusheless motor, as the stock transmission axles will break. However, be aware that these will introduce some wheel slack. ## Features - Stainless steel materials construction, not easy to rust - Enhanced structure design for long-life durability - Scale Joint and spline diameter size for realistic appearance - D-Shaped and rounded rectangle holes desgin offer tighter connection to transmission and axles - Note: Designed for 1/18 TRX4M Defender Bronco. Not Compatible with TRX4M High Trail K10 F150 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C7GQ6MFL | | Age Range Description | Kid | | Battery Types | No batteries required | | Brand | INJORA | | Character | Bronco | | Colour | Black | | Customer Reviews | 4.7 out of 5 stars 500 Reviews | | Educational Objective | Develop manual skills and understanding of mechanical components | | Indoor Outdoor Usage | Outdoor | | Is Assembly Required | Yes | | Item Dimensions | 25 x 25 x 51 Millimeters | | Item Weight | 0.02 Kilograms | | Manufacturer | INJORA | | Manufacturer Part Number | 4M-50BK | | Material | Steel | | Maximum Recommended age | 144 | | Minimum Recommended age | 14.00 | | Model Number | 4M-50BK | | Number of Players | 1 | | Operation Mode | Manual | | Power Source | Unpowered | | Size | Petit | | Theme | Vehicle | | Unit Count | 6.0 Count | ## Images ![Steel D-Shaped Hole Drive Shaft for 1/18 TRX4M Defender Bronco - Image 1](https://m.media-amazon.com/images/I/51kDc2TWtBL.jpg) ## Questions & Answers **Q: Are these version 2? Same as chrome ones.** A: Yes they the same, I have both sets so, I can confirm that they're the same **Q: Whould these fit fms fcx or furitek caymen? Thanks** A: They are for 1:18 scale crawlers, but they're only a few bucks, so try em out. You could probably cross reference sizes though to find out for sure. I know the hole to attach the shaft is a d-shaped hole. **Q: Any idea if these will work with the K10 High Trail?** A: I use them on my K10 Monster Truck build with 59mm INJORA shocks. It's at their limit, but functional. I think INJORA just came out with a stainless steel version, specifically for the K10, on their website. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Solid upgrade from Injora *by J***Y on 6 March 2026* This is a great upgrade for the stock TRX4M - plastic to metal conversion. It's a no brainer. They're metal so they're a ton stronger than the stock plastic ones. They look way cooler than the stock ones as well. And they're heavier so it helps keep the CoG low. They're also from Injora - one of the most reputable brands in the business. Easy enough to assemble and came with all necessary hardware - a couple of set screws. Make sure when you install them, you install them "in-phase". Google that and you'll see what I mean. Installing this way will help reduce torque twist. ### ⭐⭐⭐⭐ Top but with a quirck *by D***O on 19 September 2025* Can't argue with the build quality! Definitely a must, especially if upgrading for a brusheless motor, as the stock transmission axles will break. However, be aware that these will introduce some wheel slack. ### ⭐⭐⭐⭐⭐ Injora *by L***L on 9 December 2024* Excellent parfait 👍 ## Frequently Bought Together - INJORA Drive Shaft Steel Black Front Rear Center Shaft with D Shaped Hole for TRX4M Defender Bronco 1/18 RC Crawler Upgrade, 22g/Set - INJORA High Clearance Chassis Links Set Brass Black Coating Link for 1/18 TRX4M Defender Bronco Upgrade Parts RC Crawler, 48g - INJORA Brass & Aluminium 59mm Shocks- Long Threaded Shock Absorber Oil Damper for TRX4M TRX4MT 1/18 RC Crawler Upgrade --- ## 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.us/products/635181320-steel-d-shaped-hole-drive-shaft-for-1-18-trx4m](https://www.desertcart.us/products/635181320-steel-d-shaped-hole-drive-shaft-for-1-18-trx4m) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-20*