Hot Racing - Steel Helical Differential Ring/Pinion Overdrive, 12 Tooth & 33 Tooth, for Traxxas TRX4 Radios & Accessories RPM Rear A-arms are more

RPM Rear A-arms are more than 7 grams lighter per A-arm than their stock counterparts

Battery wire size: 14 AWG

That means rocks thrown from the front tires (or from that guy you're trying to pass) won't ever hit your shock shafts

and an advanced microprocessor that improves vehicle control

and the D941TW boasts a full metal case

Hot Racing - Steel Helical Differential Ring/Pinion Overdrive, 12 Tooth & 33 Tooth, for Traxxas TRX4 Radios & Accessories RPM Rear A-arms are moreHot Racing steel helical spiral overdrive 33T 12T gear set for 1 10 Traxxas TRX 4, comes with a 33 tooth spiral cut ring gear and 12 tooth spiral cut pinion gear. Replaces Traxxas 8287 Features: Precision machined helical spiral cut gears offer inherently greater strength and smooth operation than the factory Straight cut bevel gears High carbon steel construction Less vibration, less noise, less wear then stock straight cut bevel gears 33T 12T