1999-2010 Ford F150 Motive 4.89 Rear End Gears (9.75 inch Rear Ends) | F9.75-489

Name: 1999-2010 F150 9.75 inch Motive 4.89 Rear End Gears
Brand: Motive Gear
SKU: F9.75-489
Price: 353.99 USD
Availability: InStock

1999-2010 F150 9.75 inch Motive 4.89 Rear End Gears

SKU F9.75-489

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$353.99

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1 Customer Q&A(s)

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For Trucks with Huge Tires to Improve Power Band

This extremely short set of Motive ring and pinion gears are pretty much solely reserved for trucks running around with big 37" or larger tires and will give your 1999 to 2010 F150 back the low-end power band that it lost when you went with massive off-road wheel and tire combinations. This 4.89 ring and pinion gear set is definitely not recommended for trucks with stock-sized tires on the street, but is one of your best options for getting back a more effective and efficient power band when you put huge tires onto your F150. Motive's 4.89 gears are certainly aggressive, but when you have large off-road tires, they're bound to be one of the best upgrades you make to your F150.

High-Grade, Heavy-Duty CNC Machined Gear Steel

Motive's ring and pinion gears are each manufactured out of high-strength, high-quality materials and are designed for a great fit. The gears are CNC machined from extremely strong 8620 gear steel that is then heat-treated to ensure maximum rigidity and strength. Both the ring and pinion are built to near-OEM specs and will deliver low, factory-levels of noise in almost any application.

For Ford 9.75" Rear Ends Only: this set of gears will only fit Ford 9.75" rear ends found on 1999 to 2010 F150s. Both Motive and Stage 3 strongly recommend Motive's Master Install Kit during your gear installation.

Matching Front Gears Required: for 4WD F150s, a set of matching front 4.88 gears will be required for proper operation and drivetrain function.

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I need to replace the front and rear ring and pinion gears in my 2004 F150 FX4 Crew. I have 38" tires and a 8" lift. Stock gears are 3.55. I want 4.88's or larger. I did not see G2 products that went that high. Motive has 4.88's for the front, but I only see 4.89's available for the rear?? Is this right? I understand that the Arbus larger than the front, just want to make sure that I order the right part numbers for the rear to match.

Asked by: Woody - 10/24/2015

G2's 4.89s are the ones you need to match the front 4.88s. As long as the gear ratios are within a very specific percentage, they will work fine together without any issues. Depending on how many miles are on your truck, I would strongly recommend grabbing install kits for the front and rear, as well.

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Answer provided by: Jason@Stage3 (10/26/2015)

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WARNING: Cancer and Reproductive Harm

This product can expose you to chemicals including those known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information, visit [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov).

1999-2010 Ford F150 Motive 4.89 Rear End Gears (9.75 inch Rear Ends) | F9.75-489

For Trucks with Huge Tires to Improve Power Band

High-Grade, Heavy-Duty CNC Machined Gear Steel

Pick Up Where You Left Off