EATON TRUETRAC LSD & MOTIVE GEAR 3.89 DIFF GEARS PACK FORD 9" 28 SPLINE 10 BOLT

EATON 912A587 TRUETRAC 28 SPLINE & MOTIVE GEAR PERFORMANCE 3.89 DIFF GEAR SET

SUITABLE FOR ALL FORD 9" DIFFERENTIAL WITH 10 BOLT RING GEAR & 28 SPLINE AXLES

These Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like an open differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant

The Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket as an Eaton brand. It remains the leading helical gear-type limited slip differential in the industry. Detroit Truetracs proven helical gear design eliminates the need for wearable parts, resulting in maintenance free traction recognized not only for its toughness, but its smooth and quiet operation as well. Proven design, low cost and effective performance all make the Detroit Truetrac limited slip differential the ideal choice for a wide variety of vehicle applications. No maintenance - Just Traction.

Most LSD manufacturers insist that their customers use only costly high-grade premium LSD oil as well as expensive LSD additives to not only maintain the longevity of their products, but to also warrant them. Eaton took these expensive additional running costs into mind when designing their range of Truetracs, and through rigorous testing have manufactured their LSDs to happily suit any generic diff oil. This makes the running and servicing costs of a Truetrac far less when compared to any OEM LSD, KAAZ LSD or virtually any other clutch/cone type LSD. Just another reason Eaton remains such a popular LSD brand worldwide.

• Eaton Truetrac 912A587 suit Ford 9" 28 Spline
• Helical gear driven LSD
• Smooth & quiet operation
• No wear and tear
• Proven design
• Never wear out your standard clutch style LSD again!

MOTIVE GEAR PERFORMANCE DIFF GEAR SET

HIGH PERFORMANCE RING & PINION SERIES

These are a quality diff gear made by Motive Gear USA. The absolute best "bang for buck" mod you can do to your car! Get faster acceleration without touching your engine!

Motive Gear is a manufacturing industry leader in professional quality, high performance ring and pinion sets. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Motive Gear performance products can often be found in the winner's circle at NHRA, IHRA, ANDRA, SODA, SCORE, and NASCAR events. Motive Gear ring and pinion sets are available in a wide range of ratios for most applications. Computer-controlled heat treatment, index tooth spacing, and CNC machining all go into Motive Gear Performance series gear sets.

These are brand new quality items - don't be fooled by cheap inferior or secondhand gearsets that give troubles and have strength issues.

• Motive Performance Ring & Pinion Series 3.89 Gear Set F890389
• Central Contact Pattern
• CNC manufactured from start to finish
• Computer Controlled Heat Treatment
• Double Lapped
• Index tooth spacing
• Ring and Pinion Ratio: 3.89:1
• Ring Gear Bolts: 10
• Pinion Spline Count: 28
• Ring Gear Rotation: Standard
• Ring Gear Teeth: 35
• Pinion Gear Teeth: 9
• Ring Gear Diameter (in): 9.000 in.
• Pinion Shaft Diameter (in): 1.313 in.

Fitment Notes:

• Suitable for all Ford 9" Differential with 10 bolt ring gear
• Suitable for Ford 9" Differential with 28 spline axles