Robinson Industries Billet 2nd Engagement Gear Set – Street | Suzuki Hayabusa Gen1 As OEM transmission components for the Suzuki Hayabusa become harder to find and increasingly expensive, Robinson Industries developed a stronger, more reliable solution. The Billet 2nd Engagement Gear Set – Street is designed as a direct replacement for the factory Gen1 Hayabusa 2nd and 6th output gears, offering improved durability and performance at a price only slightly above new OEM parts. Precision-machined from billet material, these gears feature undercut engagement dogs that help prevent the transmission from slipping out of gear under load—one of the most common issues encountered during aggressive street riding or hard acceleration. The improved engagement design helps maintain positive gear retention while delivering smoother, more consistent power transfer. Designed to install directly in place of the stock components, this gear set allows riders and engine builders to upgrade the reliability of the Hayabusa transmission without complicated modifications. Whether you’re refreshing a worn transmission or strengthening a street-driven Hayabusa, Robinson Industries’ billet gear set provides a durable, performance-focused upgrade. FITMENT Suzuki Hayabusa Gen1 / 1999–2007 FEATURES Billet-machined 2nd and 6th output gears Undercut engagement dogs to prevent gear disengagement under load Direct replacement for OEM Suzuki components Improved strength and reliability over stock gears Designed for street applications