INJORA Transmission Housing with Bearings CNC Aluminum Gearbox Case Housing for 1/18 RC Crawler TRX4M Upgrade(Black)

I don't mind the Traxxas controller at all. It is not the smoothest, but with a little practice you can find the "sweet spot" for your throttle desire. Like was said before, I use the tip of my finger for the throttle which seems to work better for me. Unfortunately, any gearing or motor changes is going to change your speed. You said you already have the 48T motor, are you still running stock gears in the trans? If so, change to Amazon.com: INJORA 15g Stainless Steel 24.4:1 Transmission Gear Pinion Set for TRX4M Upgrade 1/18 RC Crawler Car : Toys & Games you will not loose too much speed, but will gain low end. If you go that route, get the Amazon.com: INJORA Transmission Housing with Bearings CNC Aluminum Gearbox Case Housing for 1/18 RC Crawler TRX4M Upgrade(Black) : Toys & Games and swap out the stock stuff all together. I am not a brushless fan, I have multiple rigs with diff brushless setups, but actually prefer the simplicity of brushed setups, especially now with the MB100 G2 ESC(requires a diff rec and controller though).

Think about getting the transmission case at the same time. You get bearings for smoother operation, and the aluminum case dissipates heat better than the stock one. https://www.amazon.com/INJORA-Transmission-Housing-Bearings-Aluminum/dp/B0C7QXR57B/ref=sr_1_1?crid=1UYMKRCYZ9RX0&dib=eyJ2IjoiMSJ9.Exn3dTwGh-p6wvR_gFKvf1N6KqCsRiShKS60S6AdDzIPw4ambIELwnB7FC1DUEC9XRdkCUrnPvaRzDm6U8of1Y91BYscbNbRTubXnptxGKzvVe1UPn_T8CHOJsFQ2kuOW1yaF1HlhUkuXcSLMIJ5ZUWygOE8BCh_NDrYnvjDf4325WO_mtRvdB0DuUehQ4R9dRZObnY-ImTl_42f6vHPLAaumh850jgHKGTgvmfUvmq0GlMwy23PHBilVzhXjMaQfYD2eijnnpbrYpGxCBjn1OZbjBpIRCwDiiOVAem4aFY.zjejjKnhUco1R3iFB1UXwt8KWdcM_MJJasLRVUTZSxI&dib_tag=se&keywords=trx4m+transmission+housing&qid=1781741972&refinements=p_123%3A334736&rnid=85457740011&sprefix=trx4m+trans%2Caps%2C180&sr=8-1 Here is a decent video for installing trans gears. How To: Install Traxxas trx4m Crawler Gears | Dripboss RC You will also need to completely grease the gears with some kind of waterproof grease. My preference is Amazon.com: CowRC Udder Butter Waterproof RC Grease, 40 ml Syringe, Precision Applicator for Gears, Bearings, Axles, Differentials, Hobbies, Off-Road. Cow RC : Toys & Games

Amazon.com: INJORA 180 PRO Brushed 48T Motor with Stainless Steel Pinion for TRX4M 1/18 RC Crawler Car Upgrade : Toys & Games with https://www.amazon.com/INJORA-Transmission-Housing-Bearings-Aluminum/dp/B0C7QXR57B/ref=sr_1_8?crid=3V0WCPNM5BJGZ&dib=eyJ2IjoiMSJ9.gV87mV-w4lKjA3_8WuDAoikGuic6CfhcPvADxnA-1N8clcVq-qG9BE95thC9QW-mK3T1uWppgPNPteP9Zng1QV1FeSFuPmJkYu8PHj1Edicdlrc8kc117Ub4HDxs9BUdxVQuEGoGXfPcHampRRMpVuhUUox0-Sl0MGQOYIS6u79JVK-LAnM9uof8PKwGuSe8EGdMHYLFbJKd9Uw--bKyL2U7qIRiSAaG4-_jbj7irm5EZzRPR82xoFW9_x2hRNnGdzzfAWo5sGxM7irom2HXr4ayQHggpJ9EAD8HCIEZzqk.WOqaqOYfW5KsM4ksJZWeOfu4WIPwEa-rhjcPTvyipiY&dib_tag=se&keywords=trx4m+transmission&qid=1781738518&refinements=p_123%3A334736&rnid=85457740011&sprefix=trx4m+trans%2Caps%2C174&sr=8-8 Amazon.com: INJORA 15g Stainless Steel 24.4:1 Transmission Gear Pinion Set for TRX4M Upgrade 1/18 RC Crawler Car : Toys & Games alternative Amazon.com: INJORA CNC Aluminum Complete Transmission with 370 Brushed Motor 45T for 1/18 RC Crawler TRX4M Upgrade : Toys & Games upgrade your ECM to a MB100 ESC with a new receiver and controller Amazon.com: INJORA MB100 G2 Brushed ESC 40A for 1/24 1/18 RC Crawler SCX24 AX24 TRX4M : Toys & Games Amazon.com: INJORA T6M 2.4GHz Transmitter with 6CH Receiver for 1/24 1/18 RC Crawler : Toys & Games