{"product_id":"injora-9-7-1-overdrive-transmission-gear-set-stainless-steel-fits-trx4m-1-18-rc-crawlers","title":"INJORA 9.7:1 Overdrive Transmission Gear Set – Stainless Steel – Fits TRX4M 1\/18 RC Crawlers","description":"\u003cp\u003eThis INJORA gear set is a stainless steel transmission upgrade for 1\/18 RC crawlers like the TRX4M Defender, Bronco, K10 High Trail, and F150. It features a 9.7:1 overdrive ratio that increases wheel speed by approximately 71% while maintaining durability with CNC-machined construction.\u003c\/p\u003e\n\n\u003ch2\u003eWhat makes the 9.7:1 overdrive gear set different?\u003c\/h2\u003e\n\u003cp\u003eOverdrive gears route more power to the axles, which effectively lifts the front of the vehicle and improves ground clearance during climbs. The 9.7:1 ratio delivers about a 71% speed increase at the wheels, helping the crawler push over obstacles more aggressively.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical details at a glance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e15 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRatio\u003c\/td\u003e\n\u003ctd\u003e9.7:1 overdrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed increase\u003c\/td\u003e\n\u003ctd\u003eApproximately 71%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eAll transmission gears and an 11-tooth motor pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTRX4M Defender, Bronco, K10 High Trail, F150\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat comes in the box and what vehicles does it fit?\u003c\/h2\u003e\n\u003cp\u003eThe set includes all transmission gears needed for the upgrade plus a separate 11-tooth motor pinion. It's designed as a direct replacement for the stock gear set in 1\/18 scale TRX4M models—specifically the Defender, Bronco, K10 High Trail, and F150. No additional parts are required beyond the included components.\u003c\/p\u003e\n\n\u003ch2\u003eWhy stainless steel matters for RC crawling\u003c\/h2\u003e\n\u003cp\u003eStainless steel offers excellent resistance to rust and corrosion, which is a real advantage when running in wet or muddy conditions. The CNC machining process ensures precise tooth profiles and a smooth surface finish, which helps reduce wear over time. Combined, these qualities contribute to a longer service life compared to standard plastic or less durable metal gears.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions about this upgrade\u003c\/h2\u003e\n\u003ch3\u003eDo I need to grease the gears before installation?\u003c\/h3\u003e\n\u003cp\u003eYes, the manufacturer recommends greasing the gears to ensure smooth operation and to protect the metal surfaces during use.\u003c\/p\u003e\n\u003ch3\u003eWill this fit my stock TRX4M without modification?\u003c\/h3\u003e\n\u003cp\u003eIt is designed as a direct replacement for the listed TRX4M models. No modifications should be needed for those specific vehicles.\u003c\/p\u003e\n\u003ch3\u003eHow much does the set weigh?\u003c\/h3\u003e\n\u003cp\u003eThe complete gear set weighs 15 grams.\u003c\/p\u003e\n\u003ch3\u003eWhat is the tooth count on the pinion?\u003c\/h3\u003e\n\u003cp\u003eThe set includes an 11-tooth motor pinion.\u003c\/p\u003e","brand":"INJORA","offers":[{"title":"Default Title","offer_id":58074767491375,"sku":null,"price":25.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4478\/7503\/files\/injora-971-overdrive-transmission-gear-set-stainless-steel-fits-trx4m-118-rc-crawlers-1.jpg?v=1781473722","url":"https:\/\/toysforkid.co.uk\/products\/injora-9-7-1-overdrive-transmission-gear-set-stainless-steel-fits-trx4m-1-18-rc-crawlers","provider":"Toys For Kid","version":"1.0","type":"link"}