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Toyota 9.5", FJ40, 30/30/30 Spline Nitro Chromoly Birfield Front Axle Upgrade Kit
Land Cruiser 40 55 & 70 Series HD Nitro 4340 Chromoly Birfield Kit With Axles

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Price: $756.80

Product Code: AXTBIRF-FJ40KIT

Description Vehicle Applications Warranty Information

Toyota Land Cruiser 40, 55 & 70 Series
1990 & Older
Nitro HD 4340 Chromoly Front Birfield Axle Kit

1976-1984 Toyota Land Cruiser
(FJ40, FJ45, FJ55, BJ40, BJ41, BJ43, BJ44, BJ45, BJ47, HJ45, HJ47)

1984-1990 Toyota Landcruiser
(BJ70, BJ71, BJ73, BJ74, BJ75, FJ70, FJ73, FJ75, HJ75)

Also fits some Venezuela & Columbia spec Toyota Macho and Machito

Differential: Toyota 9.5"
Axle Splines: 30/30
Material: 4340 Chromoly Steel
Manufacturer: Nitro Gear & Axle
Warranty: Lifetime*

Toyota Trucks & Land Cruisers are well known for their strength & reliability all over the world. Out of the box they feature some pretty great drivetrain, but they do have their limits. The factory axles are 30 Spline at the diff, but neck down to 27 Spline at the birfield creating a failure point. Additionally the factory Birfield joints are not built to withstand the added stress of larger tires and heavy off road use. Nitro Gear & Axle has addressed this by offering a range of Heavy Duty Chromoly Birfield Joints & Axle Shafts.

Nitro Gear and Axle Premium Differential Ring and Pinion Gears, Axles and parts

Nitro Gear & Axle strives to provide the highest quality differential & axle components available. We take the steps necessary to ensure our parts are dependable. Our product range is continually growing to meet the needs of consumers for new ratios and Fits. At Nitro, we know differentials and know what it takes to provide you with high quality components.


This product can expose you to chemicals including toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to: www.P65Warnings.ca.gov

  • NITRO 30/30 Kits feature axles that have 30 Splines at both ends, eliminating the factory neck-down.
  • Fully compatible with factory or aftermarket carriers, lockers, & locking hubs.
  • High strength Chromoly Material featuring State of the art machining.

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