Nitro Gear & Axle 30/30 Spline Chromoly Birfield Joint

Price $286.67
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Toyota 30/30 Spline Nitro Chromoly Birfield Joint

Tech Note:

Does not fit stock axles.

Stock axles are 30/27 spline.

These are a HD 30/30 spline upgrade. Component only!

Compatible with and are replacement outer Birfield joints for the following axle up-grade kits:


These Nitro 30 spline birfield joints offers you a 75% increase in strength over Toyota's 27 spline stock birfield. Made from 100% 4340 chromoly thus adding strength where it is needed. Wherever your travels lead you, this Nitro 30 spline birfeild joint will give you the confidence and peace of mind to run any trail.

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.


  • Made out of 100% chromoly
  • 75% increased in strength
  • Precision polished
  • Made out of 4340 chromoly steel
  • Heat-treated for superior strength


Axle Splines: 30 inner, 30 at hub

Material: 4340 Chromoly Steel

Manufacturer: Nitro Gear & Axle

Warranty: Lifetime*


1969-1983 FJ40 front FJ45 front

1968-1979 FJ55 front

1981-1987 FJ60 front

HJ60 front

1988-1990 FJ62 front


1979-1985 Toyota 4x4 Hilux Pickup Front

1984-1985 Toyota 4x4 4Runner Front

Toyota Surf

Toyota LJ70 RJ70 Land Cruiser II & Prado

SAS Conversions


*All Nitro Gear & Axle brand products are warrantied to be free of manufacturer defects for the specified period. Warranty requests must be made by the original purchaser and submitted by the dealer purchased from. Any parts sent for warranty consideration must be pre-approved and shipped prepaid freight to our facility with copy of RGA for our inspection & determination. We will not pay for labor, shipping cost, loss of revenue or perishable goods, commercial losses, costs of telephone calls, shipping or general inconvenience. This is our only warranty expressed or implied. Unauthorized warranty returns may be refused. Warranty generally covers MFG defects in material or workmanship. Abuse, overloading, improper lubrication, misuse, commercial or competition use voids warranty. Normal characteristics are not warrantable, such as Gear whine. Minor cosmetic flaws, dings, burrs from shipping or manufacturing, are not considered defect, it is installer responsibility to address these at time of install. Customer is responsible for shipping charges if warranty is granted. Warranty is for the original purchaser/user, is not transferable. Warranty covers one replacement or credit solely at our discretion. Warranty determinations are at our sole discretion.

In addition to the above conditions, see special notes for these products:

Ring & Pinion - Warrantied against manufacturing defects. 2 years from date of purchase. Must provide set-up specs.

Chromoly front Axles, Excalibur Joints, 30/30 Birfield kits - Warrantied against manufacturing defects for the life of the vehicle. These products are also covered for Breakage. The Shaft / joint must be BROKEN. Wear, twisting, bending are not warrantable. Damages caused by failure of other parts are not warrantable, for example broken U-joint (other than Nitro Excalibur) causing damage to Axle ears.

Rear Chromoly Axles - Warrantied against manufacturing defects for 5 years. These products are also covered for Breakage. The Shaft must be BROKEN. Worn, twisted, or bent axles are not warrantable.


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:


Box Weight: 7 lb

Box Dimensions: 1 x 1 x 1 in

Shopper Approved Review

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