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The differential is a system of gears that allows different drive wheels on the same axle to rotate at different speeds, for example when your vehicle is turning. Your outer wheel travels a longer distance on a wide turning radius, therefor it needs to rotate faster. Without a differential the outer wheel would slip making your vehicle much harder to handle and wear your tires out at a dramatic rate.

When browsing for a differential there are different terminology you will run across and its important to understand what each one is. Front-wheel-drive (FWD) the differential is alongside the transmission inside a housing, and the unit is called a transaxle. Rear-wheel-drive (RWD) vehicles the differential is between the rear wheels and connected to the transmission by a driveshaft. All-wheel-drive (AWD) and four-wheel-drive (4WD) vehicles add a centre differential or a transfer case to distribute power front and rear.

The simplest and most common differential is the “open differential”. It gained its name because the wheels can always turn independently of each other. Its main drawback is that if one wheel doesn’t have traction, such as if it hits ice, it still gets lots of power. It spins helplessly, and you go nowhere. To combat this situation, some manufacturers use electronic systems that detect spinning wheels without traction and send signals to partially engage brakes on that wheel to channel the engine’s power to the other wheel on solid ground. A hydraulic differential lock can be temporarily engaged in a difficult off-road situation when one of the drive wheels digs deeper into snow, mud, or sand.

If you are an enthusiast looking for better vehicle handling for cornering, faster acceleration on the street, strip or track then you may benefit from installing a high-performance ring and pinion set with different gear ratio’s. Browse our digital shelves for your vehicle to find a huge assortment of premium racing differentials and related components, such as durable and lightweight differential cases, housings, rings and pinions, spider gears, and much more.


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Driveshaft Shop FDSH52-C
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Driveshaft Shop FDSH52-C

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$1,908.98

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$1,659.98

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Driveshaft Shop GTOSH2-A-0506
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DriveShaft Shop GTOSH-2A-0506

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$1,006.23

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$874.98

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Driveshaft Shop NISH3-S
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Driveshaft Shop NISH3-S Driveshafts

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$688.25

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$598.48

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GREDDY 14510400
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GREDDY 14510400 High Capacity Differential Cover Cast Aluminum Holds +750cc

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$642.39

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$558.60

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GREDDY 14520401
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GREDDY 14520401 High Capacity R200 Differential Cover Cast Aluminum Holds +900cc

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$492.50

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$428.26

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GREDDY 14540401
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GREDDY 14540401 High Capacity Differential Cover Cast Aluminum Holds +1000cc

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$492.50

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$428.26

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MOROSO 63853
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MOROSO 63853 Drive Kit 4 Bolt Fits Most Popular AT1 Dampers

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$373.88

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$325.11

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MOROSO 85080
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MOROSO 85080 U-Bolts Dana 60 or Ford 9" w/ 1350 series yoke

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$27.21

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$23.66

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MOROSO 85090
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MOROSO 85090 Rear Axle Spring Perches 2-1/2" Wide

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$32.98

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$28.68

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MOROSO 85280
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MOROSO 85280 Universal Filler Cap Kit Steel Bung

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$44.31

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$38.53

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MOROSO 85282
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MOROSO 85282 Universal Filler Cap Kit Aluminum Bung

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$33.66

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$29.27

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MOROSO 85283
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MOROSO 85283 Universal Filler Cap Kit Aluminum Bung Black Anodized w/ logo

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$44.07

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$38.32

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MOROSO 85330
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MOROSO 85330 Rear End Cover Chevy 12-bolt

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$74.19

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$64.51

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MOROSO 85800
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MOROSO 85800 U-Joint Girdle Use w/ 1-1/6" dia cap & 1.415" bolt centers For 1955-82 Chevy w/ U-Bolts or Dana 60

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$44.88

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$39.03

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MOROSO 85820
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MOROSO 85820 U-Joint Girdle Use w/ 1-1/8" dia cap & 1.540" bolt centers For Dana 60 w/ Straps Fits Chrysler 8-3/4" Ring Gear

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$46.43

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$40.37

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MOROSO 85830
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MOROSO 85830 U-Joint Girdle Use w/ 1-3/16" dia cap & 1.668" bolt centers For 1350 Series Race Yokes

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$71.97

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$62.58

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MOROSO 85850
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MOROSO 85850 U-Joint Girdle Use w/ 1-1/16" dia cap & 1.505" bolt centers For Chrysler 8-3/4" ring gear w/ small yoke (Type 72

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$47.29

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$41.12

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MOROSO 85860
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MOROSO 85860 U-Joint Girdle Use w/ 1-1/8" dia cap & 1.575" bolt centers For Ford 9" Rear End

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$46.16

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$40.14

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aFe 46-00001
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aFe 46-00001 Differential Cover Oil Level Sight Glass 1 in.-11.5 NPT

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$38.48

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$33.46

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aFe 46-00002
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aFe 46-00002 Differential Cover Deep Reach Magnetic Fill Plug 6 in. 0.75 in.-14 NPT Flared

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$35.55

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$30.91

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aFe 46-70020
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aFe 46-70020 Street Series Differential Cover Rear 5 Qt. Lube Capacity Incl. Hardware Aluminum w/Raw Finish

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$314.99

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$273.90

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aFe 46-70022
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aFe 46-70022 Pro Series Differential Cover Rear 5 Qt. Lube Capacity Black Powdercoat Finish w/Machined Fins

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$409.92

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$356.45

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aFe 46-70022-WL
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aFe 46-70022-WL Pro Series Differential Cover Rear 5 Qt. Lube Capacity Black Powdercoat Finish w/Machined Fins Incl. 6 Qts. 7

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$477.54

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$415.25

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aFe 46-70030
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aFe 46-70030 Street Series Differential Cover Rear 5 Qt. Lube Capacity Aluminum w/Raw Finish

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$334.35

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$290.74

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aFe 46-70032
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aFe 46-70032 Pro Series Differential Cover Rear 5 Qt. Lube Capacity Black Powdercoat Finish w/Machined Fins

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$444.56

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$386.57

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In Stock - 13 New In Stock