PREMIUM ALUMINUM CONSTRUCTION The HPI76977 pinion gear features a robust aluminum design, ensuring reliability and durability during operation. OPTIMIZED PERFORMANCE This 17 Tooth Threaded Pinion Gear is specifically engineered for two-speed transmissions, allowing for tailored acceleration and speed. ACCURATE GEARING OPTIONS Opt for lower tooth counts for enhanced low-end acceleration or higher counts for superior top-end speed, fine-tuning your RS4 Nitro 3 for your unique driving style. COMPATIBLE DESIGN This component is crafted for use exclusively with the HPI RS4 Nitro 3, ensuring perfect fitment and integration. NEW IN ORIGINAL PACKAGING This product is marked as new, providing you with the confidence that you are receiving a fresh and uncompromised part. Transform your HPI RS4 Nitro 3 experience with this essential component, designed to enhance your vehicle's performance on the track.