Upgrade your car's performance with the Evolution Straight Cut 23 tooth 1275 primary gear. This gear offers achievable drop gear ratios, including 22 tooth primary - 30 tooth idler - 25 tooth input with a ratio of 1.136-1, 24 tooth primary - 30 tooth idler - 24 tooth input with a ratio of 1.0-1, and 23 tooth primary - 30 tooth idler - 23 tooth input with a ratio of 1.0-1. Whether you're looking to improve acceleration or overall driving experience, this primary gear is a great option for car enthusiasts. Upgrade your vehicle's transmission system and enjoy a smoother, more powerful ride with this high-quality gear.