{"product_id":"overdrive-gear-set-22t-and-12t-and-underdrive-gear","title":"Overdrive Gear Set 22T And 12T And Underdrive Gear Set 24T And 10T For TRX4M RC Crawler Helical Steel Differential With Spool Locker Replacement Kit Included","description":"\u003cdiv\u003eTRX4M Crawler Overdrive\/Underdrive Gear Set with Spool Locker\u003cbr\u003e\n✔️ 22T\/12T overdrive and 24T\/10T underdrive gears with locker \u003cp\u003eThis steel helical differential gear set is designed for 1\/18 scale TRX‑4M crawlers, replacing the stock gears for improved durability and smoother operation in terrain crawling scenarios.\u003c\/p\u003e \u003cp\u003e✅ Overdrive gears: 22T\/12T (10% overdrive) \u003cbr\u003e✅ Underdrive gears: 24T\/10T (16% underdrive) \u003cbr\u003e✅ Includes spool locker for stock gear replacement \u003cbr\u003e✅ Steel helicals for TRX‑4M differential compatibility \u003cbr\u003e \u003c\/p\u003e \u003cp\u003e💡 What is an overdrive\/underdrive gear set used for in RC crawlers?\u003c\/p\u003e\nIn short, these gears balance torque and wheel speed for steadier crawling.\n- Overdrive increases front axle speed for quicker steering response\n- Underdrive slows the front axle, boosting traction on climbs\n- They let you tune handling without swapping motors or ESC ✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49043875037419,"sku":"VXB0G6Z8L5Q1","price":77.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61NucVGRwFL.jpg?v=1783903781","url":"https:\/\/vxb.com\/products\/overdrive-gear-set-22t-and-12t-and-underdrive-gear","provider":"VXB Bearings","version":"1.0","type":"link"}