Best Car Splined Drives of 2026

QP Ford 9" Mini Spool fits open carriers for Ford 9" vehicles without limited slip functionality. With 28 spline axles, this mini spool provides complete lock-up, ensuring both wheels spin together for enhanced traction. It won't fit posi carriers, making it ideal for those seeking a full lock-up mechanism. Upgrade to this mini spool for improved performance on the road or track, giving you better control and stability during acceleration and cornering.

The munirater Posi Unit is designed to enhance your vehicle's traction and stability. It features a GM 8.5 inch design with 28 splines, providing a strong fit for compatible vehicles. Made from high-quality materials, this unit is built to withstand various stresses and impacts, ensuring long-lasting reliability. One of its key benefits is the limited slip functionality, which automatically transfers power to the wheel with better grip when one starts to slip, helping you maintain control on slippery surfaces. Plus, the unit comes with carrier bearings and races for smooth operation, and it’s easy to install, saving you time and effort.

The Eaton 913A481 Detroit Truetrac Differential is a fully automatic limited slip differential designed for GM vehicles with 8.5" 30 spline differential and 10 bolt. This product is perfect for car enthusiasts in need of high performance and reliability.

QP Mini Spool is designed for GM 8.5" 10-Bolt Standard Open Carriers with 28 Spline Axles. It offers complete lock-up, ensuring both rear or front applications run smoothly. This spool is not compatible with Posi Carriers. By fitting perfectly into your vehicle's system, it provides enhanced traction and control. With this spool, you can experience improved performance and stability on various terrains.

The PowerTrax Lock-Right Locker is designed to upgrade your vehicle’s traction by converting open differentials into full locking units. This means you get better control and power delivery to both wheels, especially useful when driving through tough terrains like mud, snow, or rocky areas. It fits popular GM and Chrysler front differentials, making it a great option if you own trucks or SUVs like Silverado or Tahoe. The locker operates smoothly with a maintenance-free design, so you don’t have to worry about clutches or friction plates wearing out. This makes it a durable and reliable choice for heavy-duty use and off-road adventures.

QP Mini Spool is designed for GM 8.875" 12-Bolt Standard Open Carriers. It fits both car and truck rearends, providing complete lock-up with 30 spline axles. This mini spool ensures your vehicle's wheels are completely locked together, enhancing traction and stability. With QP Mini Spool, you can experience improved handling and control during acceleration and cornering, making it ideal for performance enthusiasts looking to optimize their car or truck's drivetrain.

The Vahaha 9" Trac-Loc Posi is designed as a reliable traction lock replacement for Ford's 9-inch 31 spline axles. This product ensures high-quality performance by using durable materials, giving you confidence in its long-lasting use. Installation is straightforward, so you can save time and effort when upgrading your vehicle. Each unit undergoes thorough testing before shipping, ensuring you receive a dependable part that fits well and functions properly. With this upgrade, you improve your vehicle’s traction, making your driving experience smoother and more controlled.

The Yukon Chevy Rearend Kit offers a complete upgrade for your truck's rear axle. It includes a brand new 30-spline clutch-type posi unit, which improves traction and handling by locking the wheels when needed. The kit also features a fresh 3.73 gear ratio ring and pinion set, helping you optimize your vehicle’s performance and fuel efficiency. Additionally, it comes with a master bearing and installation kit, making the setup easier and more reliable for you. Designed specifically for Chevy 12-bolt truck rearends with C-clip applications, this kit ensures a proper fit and enhanced durability for your truck’s drivetrain.

QP Steel Spool provides complete lockup of your rearend. Made of 4130 heat-treated moly material, it's extra strong. The scalloped design ensures maximum strength and reduced rotating weight. Compatible with 3.92 & higher gear ratios, such as 4.10, 4.56, and 4.88. With this steel spool, you can enjoy a fully locked rearend, exceptional strength, reduced weight, and seamless compatibility with various gear ratios.

The GLOSSY AUTO PARTS Dura Grip is designed for those who need a reliable limited slip replacement for their Dana 35 axle with 27 splines. This unit is compatible with gear ratios of 3.54 and higher, ensuring that your vehicle maintains optimal performance, especially during turns or when navigating slippery surfaces. The OEM part number guarantees a precise fit, while the 12-month warranty offers peace of mind for your investment. With this unit, you can enjoy improved traction and stability, enhancing your driving experience whether on or off the road.