QA1 XFR10S XF Series Chromoly Steel Female Rod End Endura Loaded Slot

The QA1 XFR10S is a chromoly steel female rod end from QA1's XF Endura Series — the loaded slot design that QA1 introduced to the U.S. motorsports market in 1995. The body is precision-machined with a continuous internal groove, into which the ball is seated and a Nylon/PTFE injection-molded race is injected. This forms a fully self-sealing, self-lubricating assembly that locks out dirt and debris while eliminating the need for periodic greasing. Unlike traditional pressed-in PTFE liners, the injection-molded race will not pound out under repeated shock loading, dramatically extending service life in demanding racing environments.

The XF Series is a go-to choice for high-load suspension and chassis applications such as 4-link suspensions, ladder bars, panhard bars, and torque arms, where the combination of chromoly strength and reliable self-lubrication is essential.

Ball:

• 52100 Bearing Steel
• Heat Treated
• Hard Chrome Plated
• Precision Ground

Race:

• Nylon/PTFE Injection Molded
• Self-Lubricating — no grease required
• Self-Sealing — keeps out dirt and debris
• Will not pound out like traditional PTFE liners

Body:

• Chromoly Steel construction
• Heat Treated for maximum strength
• Protective coating for corrosion resistance

Exclusive Endura Series Features:

• Metal-to-metal support for heavy shock loads
• Increased cross-sectional thickness for greater tensile strength
• Loaded slot design for superior ball retention

The QA1 XFR10S delivers the durability, strength, and low-maintenance performance that serious motorsports builders demand.