--- product_id: 645622666 title: "Stainless Steel 40.3:1 Low Range Gear Set for TRX4M 1/18 RC Crawler Car Upgrade" brand: "injora" price: "R792" currency: ZAR in_stock: true reviews_count: 5 category: "Injora" url: https://www.desertcart.co.za/products/645622666-stainless-steel-40-3-1-low-range-gear-set-trx4m store_origin: ZA region: South Africa --- # CNC machined stainless steel 40.3:1 ultra-low gear ratio Rust & wear resistant durability Stainless Steel 40.3:1 Low Range Gear Set for TRX4M 1/18 RC Crawler Car Upgrade **Brand:** injora **Price:** R792 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your RC crawler game with unstoppable torque and precision engineering! ## Quick Answers - **What is this?** Stainless Steel 40.3:1 Low Range Gear Set for TRX4M 1/18 RC Crawler Car Upgrade by injora - **How much does it cost?** R792 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/645622666-stainless-steel-40-3-1-low-range-gear-set-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 - • **Plug & Play Upgrade:** Seamlessly fits your TRX4M 1/18 RC Crawler with included 11-tooth motor pinion—no hassle, just instant performance boost. - • **Pro-Approved Endurance:** Backed by rave reviews and years of real-world use, this gear set transforms your crawler into a torque beast that keeps going strong. - • **Precision CNC Engineering:** Crafted with high-strength stainless steel for flawless fit and long-lasting durability that outperforms plastic alternatives. - • **Rust-Resistant Reliability:** Built to endure rugged outdoor adventures with superior corrosion and wear resistance, ensuring your upgrade lasts season after season. - • **Unstoppable Torque Mastery:** Experience rock-crawling power with an extreme 40.3:1 gear reduction ratio designed for maximum climbing performance. ## Overview The INJORA Stainless Steel 40.3:1 Low Range Gear Set is a premium CNC-machined upgrade for the TRX4M 1/18 RC Crawler, featuring a highly durable stainless steel build with excellent rust resistance. Designed for extreme torque and slow-speed rock crawling, it includes all necessary gears plus an 11-tooth motor pinion for easy installation. Proven by long-term user satisfaction, this gear set delivers unmatched climbing performance and reliability. ## Description Performance description: Part Number 4M-36 Material: stainless steel. 40.3:1 Counter Motor pinion: 11 teeth. Weight: 15 g (0.53 oz). Package list: 1 x 40.3:1 gear gears. Review: 2 years in, still recommend. - TL;DR Only one run, so far so good. Running brushless Furitek. Update March 2025. Almost 2 years on these gears and still working great. Still highly recommend this if you want to rock crawl. Too slow for trail or general purpose driving, but a must have if you’re looking for more torque and slow speed crawling. I’ve had no issues out of these gears (or anything on my 4M for that matter) Update: April 2024, 1 year later still runs like the day I installed. I don’t drive it every day but at least a couple times per week. Would buy again. Original review: Installed in my Bronco running bearing kit and the Furitek brushless motor/esc. Gears dropped right in no fitment issues. There has been a clicking ever since installing the new motor but the plastic crawler gears from Traxxas also made a clicking. So I just run it. Worth noting though. These gears appear to be nicely machined. If you’re into rock crawling with your TRX4m, I’d suggest this as your first upgrade along with bearings second. Those two upgrades even on the stock motor and electronics make it a whole new truck. The torque of the stock motor is actually pretty good with the crawl gears. I bought these injora gears because I thought that I had stripped the plastic ones causing them to click when driving, turns out these click too. The quality of injora parts is excellent. I’m also running their brass differential covers front and rear. So far these are a 5 star all day. If anything happens, I’ll update my review. Review: Fait le taf - Très bonne compatibilité. Mais le trx-4m est devenu beaucoup plus bruyant. C'est dommage. ## Features - CNC machined, durable and higher strength, long service life. - Stainless steel materials with excellent rust resistance improve wear resistance. - Includes all gear gears and a 11 tooth motor pinion. - Extremely low reduction ratio of 40.3:1 for maximum climbing performance and unstoppable torque. - Suit for TRX4M 1/18 RC Crawler Car Upgrade. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C1CTWH9X | | Age Range Description | Adult | | Battery Types | No batteries required | | Best Sellers Rank | #24,344 in Toys & Games ( See Top 100 in Toys & Games ) #909 in Remote & App-Controlled Toys | | Brand | INJORA | | Character | Car | | Colour | Silver | | Customer Reviews | 4.8 out of 5 stars 639 Reviews | | Educational Objective | Number Skills | | Included Components | Gear Gear Set | | Indoor Outdoor Usage | Outdoor | | Is Assembly Required | No | | Item Dimensions | 10 x 7 x 2 Centimeters | | Item Type Name | Gear Gear Set | | Manufacturer | INJORA | | Manufacturer Part Number | 4M-36 | | Material | Stainless Steel | | Maximum Recommended age | 168 | | Minimum Recommended age | 18 | | Model Number | 4M-36 | | Number of Players | 1 | | Operation Mode | Manual | | Power Source | Rechargeable battery | | Size | 40.3:1 | | Theme | Vehicle | ## Images ![Stainless Steel 40.3:1 Low Range Gear Set for TRX4M 1/18 RC Crawler Car Upgrade - Image 1](https://m.media-amazon.com/images/I/51kWABhvhtL.jpg) ![Stainless Steel 40.3:1 Low Range Gear Set for TRX4M 1/18 RC Crawler Car Upgrade - Image 2](https://m.media-amazon.com/images/I/61yOZ9RG+EL.jpg) ![Stainless Steel 40.3:1 Low Range Gear Set for TRX4M 1/18 RC Crawler Car Upgrade - Image 3](https://m.media-amazon.com/images/I/61FIdQdtQaL.jpg) ![Stainless Steel 40.3:1 Low Range Gear Set for TRX4M 1/18 RC Crawler Car Upgrade - Image 4](https://m.media-amazon.com/images/I/613O76pU5sL.jpg) ![Stainless Steel 40.3:1 Low Range Gear Set for TRX4M 1/18 RC Crawler Car Upgrade - Image 5](https://m.media-amazon.com/images/I/61TknF8eCAL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 2 years in, still recommend. *by 7***S on 26 April 2023* TL;DR Only one run, so far so good. Running brushless Furitek. Update March 2025. Almost 2 years on these gears and still working great. Still highly recommend this if you want to rock crawl. Too slow for trail or general purpose driving, but a must have if you’re looking for more torque and slow speed crawling. I’ve had no issues out of these gears (or anything on my 4M for that matter) Update: April 2024, 1 year later still runs like the day I installed. I don’t drive it every day but at least a couple times per week. Would buy again. Original review: Installed in my Bronco running bearing kit and the Furitek brushless motor/esc. Gears dropped right in no fitment issues. There has been a clicking ever since installing the new motor but the plastic crawler gears from Traxxas also made a clicking. So I just run it. Worth noting though. These gears appear to be nicely machined. If you’re into rock crawling with your TRX4m, I’d suggest this as your first upgrade along with bearings second. Those two upgrades even on the stock motor and electronics make it a whole new truck. The torque of the stock motor is actually pretty good with the crawl gears. I bought these injora gears because I thought that I had stripped the plastic ones causing them to click when driving, turns out these click too. The quality of injora parts is excellent. I’m also running their brass differential covers front and rear. So far these are a 5 star all day. If anything happens, I’ll update my review. ### ⭐⭐⭐⭐ Fait le taf *by G***J on 19 March 2025* Très bonne compatibilité. Mais le trx-4m est devenu beaucoup plus bruyant. C'est dommage. ### ⭐⭐⭐⭐⭐ Sehr gutes Produkt *by M***H on 28 November 2025* Passen perfekt und Auto fährt langsamer ## Frequently Bought Together - INJORA 15g Stainless Steel 40.3:1 Low Range Transmission Gear Set for TRX4M 1/18 RC Crawler Car Upgrade - INJORA Steel Sealed Bearing Kit for TRX4M 1/18 RC Crawler Upgrade Parts, 22PCS - INJORA Drive Shaft Steel Black Front Rear Center Shaft with D Shaped Hole for TRX4M Defender Bronco 1/18 RC Crawler Upgrade, 22g/Set --- ## 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.co.za/products/645622666-stainless-steel-40-3-1-low-range-gear-set-trx4m](https://www.desertcart.co.za/products/645622666-stainless-steel-40-3-1-low-range-gear-set-trx4m) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-07-05*