Nitro Ring & Pinion Toyota 8", 3.90 Ratio, 27 Spline,

Price $337.78
This Item is eligible for free delivery
accept payment


Toyota 8" 3.90 Nitro Ring & Pinion

Tech Note:

Refer to Vehicle Applications tab for info on required yokes and Master Install Kits.

In 2003 Toyota switched the 8" gear set from 27 to 29 spline pinions. Nitro 'TV6' 8" gears were designed from the beginning with a 29 spline pinion. As a result Nitro is currently the only company offering factory correct pinion splines for 2003 & newer 8" applications. As an added benefit all 2002 & older applications can now be upgraded to the superior 29 spline with our YOKTOYFITKIT-29 The FITKIT contains a new, 29 spline flange, a new pinion seal and a new pinion nut.

Nitro gears are manufactured from 8620 steel gear forgings in the same manufacturing facilities as GM, Dodge, Ford & Toyota. They are precision machined using computer controlled processes, heat treated, CNC triple-lapped and Rockwell tested for hardness. These extra steps ensure excellent fitment, ideal contact pattern and smooth, quiet operation.


Differential: Toyota 8" V6 & 4CYL

Gear Ratio: 3.90

Tooth Count: 39/10

Pinion Splines: 27

Ring Gear Bolts: 10 (not included)

Manufacturer: Nitro Gear & Axle

Warranty: 2 Years



1979-1985 Pick-up (U.S.)

1979-1997 Hilux solid axle (International)

1984-1985 Toyota 4Runner


2012-2016 Scion FR-S

2012 & Newer Subaru BRZ

2012 & Newer Toyota 86

1979-1995.5 Pick-up 4x4 (U.S.)

1979-2004 Hilux 4x4 (International)

2005-2014 Hilux 4x4 (International)

1984-1995 Toyota 4Runner & Surf

1996-2002 Toyota 4Runner, Surf, Prado 90/95/

2003-2009 Toyota 4Runner, Prado 120, Lexus GX470

1995.5-2002 Tacoma 4x4 with E-Locker

2003-2014 Tacoma 4x4 with E-Locker

2007-2009 FJ Cruiser Non E-Locker

2007-2009 FJ Cruiser with E-Locker

1985-1998 Land Cruiser II, Bundera LJ/RJ/KZJ 70/71/73/78

1998-2005 Lexus IS300


*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: 13 lb

Box Dimensions: 1 x 1 x 1 in

Shopper Approved Review

Related Products
  • Ford 10.5" (37 Spline) Outer Pinion Bearing
    SKU :
    Price $23.42
    * Free Shipping
  • 7.5" Ford Cover Gasket
    SKU :
    Price $9.24
  • Nitro Gear & Axle Front Axle U-Joint, 1550 Series
    SKU :
    Price $149.69
    * Free Shipping
  • Rear Pinion Bearing for Dana 44
    SKU :
    Price $22.79
  • Ford 9", 1480, 35 Spline, Nitro 4130 Billet Yoke
    SKU :
    Price $420.44
    * Free Shipping
  • Need Help?

    Contact Us

    To Top