jtfrkope Go-Kart Live Axle Hub Kit — 4" x 4" Step-Down Hubs for 8" Wheels, 1" to 3/4" with 1/4" Keyed Shaft

This two-piece hub set is designed to adapt a 1" inboard axle to a 3/4" outboard shaft while fitting 8" rear and front wheels commonly used on go-karts and dune buggies. Engineered from robust metal, the hubs include a 2-3/4" length for secure wheel mounting, M12×1.2 lug nuts, and dedicated flat keys to lock the hub to the axle. The kit is intended for hobbyists, repair shops, and builders who need a compact, serviceable live axle hub with straightforward fitment.

Will these hubs fit my go-kart wheels and axle sizes?

Yes—this kit is made to bridge axles and wheels that match the listed dimensions. Confirm your axle and wheel bore measurements before buying to ensure compatibility.

• Designed for 8" diameter rear/front wheels.
• Inboard shaft diameter: 1"; outboard shaft diameter: 3/4" step-down.
• Overall hub diameter approximately 5" with 2-3/4" hub length.
• Includes a 1/4" keyed slot for mechanical drive engagement.

How do I install the jtfrkope live axle hubs?

Installation is straightforward for anyone familiar with basic wheel and axle work. Slide the hub onto the shaft, align the keyway, insert the supplied flat key, and tighten the lug nuts to the wheel or hub per vehicle torque recommendations.

• Slide hub onto stepped axle, aligning the 1/4" keyway slot.
• Insert the dedicated flat key to prevent rotation between shaft and hub.
• Secure wheels using the included M12×1.2 lug nuts and proper torque.
• Check for play and re-torque after initial ride hours.

What materials and durability can I expect from this kit?

The hubs are manufactured from quality metal chosen for wear resistance and strength under typical kart loads. They’re built to withstand the stresses of recreational off-road and track use when installed and maintained correctly.

• Constructed from premium metal for durability and impact resistance.
• Machined keyway and stepped diameters for tight, repeatable fit.
• Corrosion-resistant finish suitable for outdoor use (inspect periodically).
• Supplied hardware designed for secure mounting and longevity.

What comes in the package and what should I check on arrival?

The kit arrives with both hubs and all small parts needed for installation. On receipt, inspect components for shipping damage and verify dimensions against your vehicle before mounting.

• 2 x jtfrkope go-kart axle hubs (4" x 4" style, 2-3/4" hub length).
• 2 x dedicated 1/4" flat keys to fit the keyway slot.
• 8 x M12×1.2 lug nuts for wheel attachment.
• Confirm shaft diameters: 1" inboard, 3/4" outboard step-down.

Who is this for: Builders, DIY kart enthusiasts, and small repair shops needing a compact, reliable live axle hub for 8" wheels will find this jtfrkope kit useful. It’s best for vehicles using a stepped axle arrangement with a 1/4" keyway requirement, and for anyone who wants a ready-to-install hub set with hardware included. If your kart uses different wheel or shaft sizes, double-check measurements or consult a technician before purchasing.