{"product_id":"steel-helical-gears-12t-22t-overdrive-and-10t-24t-underdrive-gear-set-compatible-with-1-18-traxxas-trx4m-rc-crawler-front-rear-axle-upgrades-replacement-for-9779","title":"Steel Helical Gears 12T\/22T Overdrive and 10T\/24T Underdrive Gear Set Compatible with 1\/18 Traxxas TRX4M RC Crawler Front \u0026 Rear Axle Upgrades Replacement for 9779","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e【PRECISION GEAR SPECIFICATIONS】 This high-performance steel gear set is compatible with 1\/18 scale mini crawlers. Featuring a 22T\/12T front overdrive gear (9% increase) and a 24T\/10T rear underdrive gear (16.7% decrease), precision CNC machined from heavy-duty 20CrMo alloy steel for long-term durability.\u003c\/li\u003e\n\u003cli\u003e【OPTIMIZED CRAWLING PERFORMANCE】 The combination of front overdrive and rear underdrive significantly improves the vehicle's climbing ability and steering radius. By allowing the front wheels to pull faster while reducing rear pushing, it effectively minimizes torque twist on steep inclines and technical obstacles.\u003c\/li\u003e\n\u003cli\u003e【DURABLE HELICAL TOOTH DESIGN】 Our spiral helical gear design offers superior tooth engagement compared to standard straight-cut hardware. This results in a much smoother, quieter transmission with increased surface contact to handle high-torque brushless motor upgrades and intense rock crawling.\u003c\/li\u003e\n\u003cli\u003e【PROFESSIONAL INSTALLATION KIT】 To ensure perfect mesh alignment, our kit includes precision pinion shims of varying thicknesses. These allow you to fine-tune the gear depth for a silky-smooth rotation, preventing the common clicking or binding issues found in inferior metal gear replacements.\u003c\/li\u003e\n\u003cli\u003e【ROBUST ALLOY STEEL UPGRADE】 Engineered as a durable alternative to factory parts, these 40CrMo alloy steel gears are hardened for maximum wear resistance. They are an essential upgrade for for TRX-4M owners tackling complex rocky terrains where standard plastic components may fail under stress.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KEAcvise","offers":[{"title":"Default Title","offer_id":52035910828320,"sku":"B0GRXYYCHQ","price":39.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1006\/7682\/9472\/files\/31N5nKlHKyL.jpg?v=1784979498","url":"https:\/\/tinyracer.com\/products\/steel-helical-gears-12t-22t-overdrive-and-10t-24t-underdrive-gear-set-compatible-with-1-18-traxxas-trx4m-rc-crawler-front-rear-axle-upgrades-replacement-for-9779","provider":"TinyRacer","version":"1.0","type":"link"}