Upgrade your Toyota solid axle to true, slug-style strength with the RCV 4340 Drive Flange Set. Designed to complement RCV Ultimate CV Axle Sets, these flanges eliminate the failure-prone factory flanges or locking hubs by delivering unmatched durability in hardcore off-road conditions.

Each flange is manufactured in the USA from premium 4340 chromoly, significantly increasing torsional strength and reducing the chance of stripping splinesespecially on rigs with big tires and aggressive gearing. This set adds six additional heavy-duty studs to better distribute load through the hub, ensuring maximum reliability in extreme use.

Includes:

• (2) 4340 Chromoly Drive Flanges
• (2) Dust Caps
• (12) Heavy Duty Studs
• (1) Drill Bit for flange/stud upgrade

Note: Not recommended for street use.

Specifications

• Material: 4340 Chromoly Steel
• Spline Count: 30 Spline
• Configuration: Drive flange (slug) replacement for locking hubs
• Stud Count: 12 (adds 6 additional studs over OEM)
• Made in the USA
• Designed for extreme off-road applications

Fitment

Compatible with Toyota solid front axle models:

• Toyota Pickup (19791985)
• Toyota 4Runner (19841985)
• Land Cruiser 40/55 Series (19761984)
• Land Cruiser 70 Series (19841989)
• Land Cruiser FJ60 (19811987)
• Land Cruiser FJ62 (19881990)
• Land Cruiser 80 Series (19911997)

Tech Insight

Locking hubs are a known weak point in Toyota solid axle setupsespecially on vehicles running oversized tires, high-horsepower engines, or doing hardcore crawling. Switching to a drive flange removes the complexity and failure potential of a locking hub while increasing spline engagement and eliminating hub blowouts.

RCVs 4340 chromoly flanges are one of the strongest solutions available, especially when paired with RCV Ultimate CV Axles. The added stud count spreads torque load across more fasteners, reducing shearing forces and keeping your hub fully secure under full throttle rock abuse.