Motive Gear GM 8.5 Ring & Pinion 3.90 Ratio GM10-390
- 18.09 LBS
- Calculated at Checkout
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Motive Gear Ring and Pinion - 3.90 Ratio - 30 Spline Pinion - 8.5 in - GM 10-Bolt - Kit - Part Number: GM10-390
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All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs - the same quality and selection demanded by DIY customers and top mechanics.
With more than just ring and pinion gears and differential bearing kits, Motive Gear offers a complete line of transmission parts and transfer case parts, as well as replacement axle shafts for everything from daily drivers to race cars or competition 4x4s.
Motive Gear is the leading manufacturer of driveline products for just about any vehicle, whether it is a stock daily driver to full-competition 4×4 or racecar. We are proud to offer an unmatched selection of quality components engineered and manufactured for the vehicle and for the way it is driven. Motive Gear products are engineered to meet or exceed OEM specifications at a price that wont break your budget.
Our broad selection of ring & pinion ratios, limited slip and locking differentials, carriers, spools, manual transmission and transfer case components, rebuild kits, bearings, seals, gaskets, shims and hardware is available for just about every vehicle made from the 1940s through the present. DIY customers and professional installers alike appreciate our installation kits, which come complete with everything needed to install a ring & pinion set, right down to the seals, gaskets, and RTV.
Motive Gear Performance products are engineered to endure extreme punishment in dedicated racing vehicles operating in the harshest environments. We partner with several off-road, drag and dirt track racing teams to make our performance gearsets the toughest on the market. Motive Gear Performance gearsets are, in fact, tough enough to survive in a 10,000-horsepower Top Fuel dragster or climb over six-foot boulders in an Ultra-4 rock racer. Our competition-grade gearsets are cut from 9310 steel, and then heat-treated to a precise hardness through a computer-controlled process.
Instead of offering a few of the more popular ratios, Motive Gear Performance gearsets are available as many as twelve different ratios for all popular axle housings. Different courses present different challenges, and Motive Gear Performance is ready with the widest selection of gear ratios to help racers be as competitive as possible wherever they run. Racers know Motive Gear Performance gearsets will see them through to the checkered flag race after race. Need help finding the right gearset for your needs?
All Motive Gear and Motive Gear Performance products meet strict quality standards through advanced manufacturing techniques and are backed by our strong warranty. Our in-house quality control lab utilizes state-of-the-art equipment to continuously check Motive Gear products for strength, tolerance, and hardness. Only after meeting stringent quality standards are Motive Gear products packaged, ready for fast delivery to our customers.
From the flywheel to the drive wheels, minivan to Top Fuel Dragster, weve got it covered. Motive Gear offers individual components as well as complete rebuild kits for most popular manual transmissions, transfer cases, and axles featured in vehicles built from the 1940s through today. Because Motive Gear and Motive Gear Performance ring & pinion gearsets are offered in several ratios for each application, our customers enjoy unmatched customizing flexibility. Our complete line of catalogs help our customers find the driveline parts they need by vehicle application, ring gear size, differential, or transmission manufacturer. Motive Gear also offers a complete listing of replacement differential components for the Jeep Matrix.
To help installers and drivers find the Motive Gear parts they need, we provide gear calculators for narrowing ratio choices to achieve the desired performance within a specific application. These tools take a lot of guesswork out of gearset selection by offering the opportunity to see how different combinations of transmission gearing and axle ratios affect engine RPM under various circumstances. The Motive Gear drag performance calculator helps determine the best axle ratio for any drag vehicle to achieve the desired quarter or eighth-mile performance.
Our street performance calculator helps determine the currently installed axle ratio in a vehicle based on engine RPM at a given speed. Using this tool allows customers to customize their current gearing to increase performance or economy. The manual transmission gear ratio calculator helps our customers tailor the spread between gears in 4, 5, or 6-speed manual transmissions to help keep engine RPM in the sweet spot, enhancing efficiency and performance.
Prior to Purchasing, Please Contact Us with ANY Questions you may have.
HOW TO RETURN AN ORDER
To return an order, please contact us HERE, with detailed information regarding the return and pictures showing the items current condition including the packaging. We can only accept items that are in new condition and have never been installed, with original packaging. We cannot accept any used, previously installed, or damaged items. If an item is sent back to us used, previously installed and/or damaged, it is now the property of DragRacingWheels.com and no refund will be issued. Pictures are required before an RMA will be issued. All returns must include the provided Return Merchandise Authorization (RMA) form or RGA number, to help expedite the return process. We will then provide the Return Shipping Address for the return. All returns are subject to a 20% Restocking Fee of the original purchase price. Some orders cannot be return – see the list of non-returnable orders below.
The buyer has 30 days from original purchase to initiate a return RMA and forward tracking information to us. No refund will be given for products that arrive after the 30 days from the original purchase date. Tracking information is required for all returns. When shipping an item back to us, we recommend that you use UPS, FedEx or any other carrier that offers signature confirmation and insurance, as we are not responsible for lost or damaged packages. Only the signature of an DragRacingWheels.com employee will suffice as proof of delivery. The customer agrees to bear all shipping and insurance charges, and all risk of loss during return shipment. If an order is refused “Returned to Sender”, no refund will be issued. Buyer is responsible for all return shipping charges.
We will not accept a return of an item that is damaged or defective if it has been used/installed, please inspect all orders as soon as you receive them and contact us HERE within 72 hours. If the order is damaged during shipment, DragRacingWheels.com will replace the item free of charge.
When you purchase items that qualify for a promotional offer such as Buy "X" number of items, Get "X" number of items free, the discount reflecting the price of the lowest-priced item is proportionally applied to each eligible item. If any item is returned, the refund will be equal to the original price of the item reduced by the proportional discounted amount.
Returns will not be allowed for the following items:
· DragRacingWheels.com gift cards.
· Final sale, closeout or discontinued products.
· Any products sold as "Open Box".
· Wheels that have already been mounted to tires. This includes tire and wheel packages from DragRacingWheels.com.
· All special orders, custom, and/or built to order wheels. This includes but not limited to, Billet Specialties, CCW, Forgestar, MRR, Race Star Industries and Weld Racing, Please contact us prior with any questions.
· All Race Star Industries Pro Forged Wheels. Confirm fitment with manufacturer before ordering.
· Non-defective used or installed items.
· Chips and Handheld Tuners
· All orders that required freight delivery.
· International orders that shipped outside of the United States.
RECEIVED DAMAGED ORDER
We try our best to prevent damage to all packages during transit by packing each order carefully. From time to time, though, damage will occur despite our precautions. If you receive an item that has been damaged in shipping, please call us within 72 hours of receipt and we will set up a claim for the product. Once this claim has been processed by the courier, we will reach out to you to return the product and send out a replacement. If the order is damaged during shipment, DragRacingWheels.com will replace the item free of charge.
We may request pictures to further assist with the completion of the claim.
The courier will reach out to you after the claim has been filed over the phone; please provide a reliable contact number when setting up your damage claim.
If you receive a defective product, please contact us within 72 hours, and we will process your return or replacement free of shipping charge. Do not install the defective item. Contact us HERE to process your return.
In the event of a defect that occurs outside our return policy, but within the manufacturer warranty, please contact the manufacturer directly to process your return. The manufacturer will have sole determination of the outcome of the claim. As a courtesy to our customers, DragRacingWheels.com will be happy to try to facilitate a thorough review of the claim, but we have no final say in the decision made by the manufacturer (i.e. approvals, denials, fees, etc.).
DragRacingWheels.com is not responsible for any labor costs which occur as the result of the installation of wrong or defective parts. This includes any appointment scheduled for dyno/tuning of the vehicle.
Once the return is received, please allow 5-7 business days for the refund to be issued. All items included in the return are fully inspected by our Returns Department prior to issuing a refund. All refunds will be issued to the original payment method. Allow 3-5 business days for the refund to settle back to the original payment method. The original shipping and handling charges are non-refundable. Processing time will vary, depending on your financial institution.
NEED TO CANCEL
We strongly suggest you call us at 1-833-287-6088 as soon as possible after placing your order if you need to change or cancel it, as orders are processed within minutes! If you email us, we may not receive them in time to stop the order from shipping out. Please double-check that your order details are correct before submitting your order during checkout. Products that are marked as Built to Order, Custom Order, and/or Special Order, cannot be canceled once processed.
An order that has already received tracking information and/or shipped cannot be canceled. If an order has been assigned a tracking number but the tracking information has not updated, this does not mean the order has not shipped. Please contact us HERE to set up a Return Merchandise Authorization (RMA) once your order has been received.