Nitro Ring & Pinion 8" 4.11 Ratio 29 Spline

Nitro Gear and Axle
Part Number
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Toyota 8" 4.11 Nitro Ring & Pinion

Tech Note

Refer to Fits 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 resultNitro is currently the only company offering factory correct pinion splines for 2003 & newer 8" Fits. As an added benefit all 2002 & older Fits 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.

TV6 gears will not work in South American built Dana 200mm 3rd members (these have side shims, not the typical adjuster nuts for carrier bearings. Call JT's for more info.

*ARB132 equipped models use MKT8-B-50MM

**OEM E-Locker models use MKT8-ELOC-B

***OEM 27 spline pinion uses MKT8-ELOC-A







Box Weight: 13 lb

Box Dimensions: 1 x 1 x 1 in


Differential: Toyota 8" V6 & 4CYL

Gear Ratio: 4.11

Tooth Count: 37/9

Pinion Splines: 29

Ring Gear Bolts: 10 (not included)

Manufacturer: Nitro Gear & Axle

Warranty: 2 Years



1979-1985 Pick-up (U.S.), Req. YOKTOYFITKIT-29, Use MKT8-B*

1984-1985 Toyota 4Runner, Req. YOKTOYFITKIT-29, Use MKT8-B*


2012 & Newer Toyota 86, use with Master install Kit MKTLC100-IFS, solid spacer SKCSTV6, and Yoke fit kit YOKTOYFITKIT-29.

1979-1995.5 Pick-up 4x4 (U.S.), Req. YOKTOYFITKIT-29, 4 Cyl. Use MKT8-B*, V6 Use MKTV6-B**

1984-1995 Toyota 4Runner Req. YOKTOYFITKIT-29, 4 cyl. Use MKT8-B*, V6 Use MKTV6-B**

1996-2002 Toyota 4Runner Req. YOKTOYFITKIT-29, Use MKTV6-B**

2003-2009 Toyota 4Runner Lexus GX470, Use MKTV6-B**

1995.5-2002 Tacoma 4x4 with E-Locker, Req.YOKTOYFITKIT-29, Use MKT8-ELOC-B***

2003-2014 Tacoma 4x4 with E-Locker, Use Use MKT8-ELOC-B

2007-2009 FJ Cruiser Non E-Locker, Use MKTV6-B

2007-2009 FJ Cruiser with E-Locker, Use Use MKT8-ELOC-B

(KZJ Use MKTV6-B**)


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ManufacturerNitro Gear and Axle
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