Universal Joint S55 to 1310 Series OSR

The Universal Joint S55 to 1310 Series OSR by DANA-SPICER is the go-to drivetrain component for serious off-road enthusiasts, custom builders, and mechanics upgrading driveshaft systems on mid-size 4x4s and light trucks. This adapter-style universal joint bridges the gap between smaller S55 yokes and the more robust 1310 series, enabling seamless integration when stepping up to heavier-duty driveline architecture. Whether you're reinforcing a stock driveshaft or engineering a complete drivetrain refresh, this joint addresses the structural demands of high-torque applications without requiring a full shaft replacement.

DANA-SPICER universal joints are engineered with precision-machined bearing caps and hardened cross pins that handle shock loads and continuous rotation under extreme angles—critical when traversing rocky terrain or when running oversized tires that amplify driveline stress. The 1310 series yoke upgrade increases cross-pin diameter and bearing surface area compared to lighter S55 geometry, resulting in superior load distribution and extended service life. At just 1.2 lbs, this compact adapter maintains minimal rotational mass while delivering the structural integrity required for modified vehicles that exceed stock torque specifications.

This universal joint is essential for builders upgrading transfer case outputs, axle shafts, or transmission flanges to heavier-duty platforms, and is particularly valuable in builds running turbo or supercharger systems where stock joint architecture becomes a weak link. Installation is straightforward—press-fit into existing yokes or driveshaft flanges—making it ideal for in-house fabrication or professional driveline shops. Verify yoke bore dimensions and cross-pin specifications against your particular application before purchase to ensure proper fit and function.