When you push your Yamaha YXZ 1000 beyond factory limits, drivetrain strength becomes critical—especially with a long travel suspension setup. The Cognito Motorsports Summers Brothers Rear Axle Shaft delivers a proven solution for riders who need maximum durability without the cost of a complete axle assembly.
Manufactured from high-strength 300M steel, this rear axle shaft is engineered to handle extreme torque loads, aggressive terrain, and high-speed abuse common in desert and long travel applications. Compared to standard materials, 300M steel offers exceptional tensile strength and fatigue resistance, making it a trusted choice for performance-driven UTV builds. Designed specifically for the Cognito Long Travel Kit, the extended-length shaft provides the correct geometry and engagement needed for reliable operation.
This axle is intended to be installed into your existing OEM CV joints, allowing you to upgrade strength while keeping replacement costs lower than full axle assemblies. Precision manufacturing and USA-made quality ensure consistent fitment and dependable performance. Please note that two axle shafts are required per vehicle, and OE CV joints must be reused during installation.
Compatible with 2016–2021 Yamaha YXZ1000R models, including SE, SS, and SS XT-R trims, this Summers Brothers axle shaft is ideal for riders reinforcing their drivetrain for long travel suspension, larger tires, or more aggressive driving styles. Backed by a limited manufacturer warranty, it’s a smart upgrade for anyone looking to strengthen their YXZ without unnecessary complexity.
If you’re building a serious YXZ 1000 long travel setup, this Cognito-approved 300M rear axle shaft delivers the strength, value, and reliability your drivetrain demands.
