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PEM
Performance Engineering & Mfg know to us and others as PEM manufacture, quickchanges, gears, driveshafts and parts.

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31 Spline Axles
31 spline axles fit most Quick Change and 9" Ford rears. PitStopUSA.com also carries special lightweight gundrilled 31 spline axles. Use with 24 spline drive flanges.
5 x 4.75" Hubs
Billet aluminum hubs are a lightweight, economical and are available at PitStopUSA.com in all common bolt patterns. We also offer steel hubs and steel hub kits. Many of our hub kits include bearings, seal, spindle nut and studs.
5 x 5" Hubs
Billet aluminum hubs are a lightweight, economical and are available at PitStopUSA.com in all common bolt patterns. We also offer steel hubs and steel hub kits. Many of our hub kits include bearings, seal, spindle nut and studs.
Axle Nuts
Pit Stop USA has the Axle Nuts you need to complete your assembly at low everyday prices. Whether you are running a traditional drivetrain or a sprint car we have the drivetrain fasteners you need.
Axle/Hub Seals
Complete Quick Change Rear-Ends
Quick change rear ends have been the standard in racing and hot rodding for decades. They allow you to change final drive ratios with a simple gear change, so racers can maximize performance from...More Details »
Conventional Grease
Differential Carrier Cases
Pit Stop USA offers Differential Carrier Cases at low everyday prices.
Differential Cases
Pit Stop USA is The Online Motorsports Superstore! We feature Ford 9" Carrier Bearing Cases at low everyday prices.
Drive Flange Hubs
Pit Stop USA is The Online Motorsports Superstore! We feature Drive Flanges at low everyday prices.
Ford 9" Rear Ends
Pit Stop USA is The Online Motorsports Superstore! We feature Ford 9" Rear Ends at low everyday prices.
Ford 9" Ring & Pinions
Pit Stop USA is The Online Motorsports Superstore! We feature Ford 9" Ring & Pinion at low everyday prices.
O-Rings
Check out the Recently Listed O-rings.
PEM Premium Quick Change Gear Sets
High Strength Alloy Steel for higher HP cars with bigger tires. LW Drilled. 1.5 lbs. lighter decreases your rotating weight. REM® polished for less friction and longer life. QC Gears run cooler with REM® finishing!
PEM Premium Quick Change Gears
High Strength Alloy Steel for higher HP cars with bigger tires. LW Drilled. 1.5 lbs. lighter decreases your rotating weight. REM® polished for less friction and longer life. QC Gears run cooler with REM® finishing!
PEM Racing Brake Rotors
Pit Stop USA offers PEM Racing Brake Rotors at low everyday prices.
PEM Standard Quick Change Gear Sets
Proven Gear manufactured for over 10 years. 10 spline gears - Fits Winters, Frankland, Bulldog (DMI), Tiger, Halibrand, Jones and other Quick Change Rear Ends.
PEM Standard Quick Change Gears
Proven Gear manufactured for over 10 years. 10 spline gears - Fits Winters, Frankland, Bulldog (DMI), Tiger, Halibrand, Jones and other Quick Change Rear Ends.
Quick Change Gear Covers
Pit Stop USA offers Quick Change Gear Covers at low everyday prices.
Rear Axle Housings
Pit Stop USA is The Online Motorsports Superstore! We feature Rear End Housings at low everyday prices.
Slip Yokes
Pit Stop USA offers Slip Yokes at low everyday prices.
Snap Rings
Retaining rings, also referred to as snap rings, are typically installed in a groove on the shaft or bore. The retaining ring acts as a shoulder which holds components in place. The retaining ring...More Details »
Spindle Washers & Nuts
Spindle Washers and Nuts from PitStopUSA.com keep your hubs, bearings and seals secure for reliability and performance. We stock spindle lock nut kits that include nut, washer and cotter pin for stock spindles too.
Spools and Mini Spools
Pit Stop USA is The Online Motorsports Superstore! We feature Spools at low everyday prices.
Trailing Arm Brackets - Weld-On
Aluminum trailing arm mounts can not compare to the clamping power of this weldable cast steel bracket
Items 1-25 of 28

PEM Products

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Items 1-25 of 153
Description: Gear Cover, 10-Bolt, 3.15 in OD Ball Bearings, Aluminum, Black Anodized, Quick Change Rear Ends, Kit
Item #: PEMQCC0040BBB-K
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
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Price: $288.99
Sale: $285.97
Save: 1%
Save: $3.02

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Description: Gear Cover, 10-Bolt, Bearings / Caps / Plugs Included, Aluminum, Natural / Red Anodized, Each
Item #: PEMQCC0040K
Condition: New
Limited Supply: Only 1 Left!
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Price: $233.81
Sale: $219.97
Save: 6%
Save: $13.84
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Description: Axle Shaft, 29-1/2 in Long, 31 Spline Carrier, 24 Spline Drive Flange, Steel, Natural, Each
Item #: PEMW529531
Condition: New
Limited Supply: Only 2 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $125.74
Sale: $104.97
Save: 17%
Save: $20.77
Qty:

Description: Wheel Hub, Rear, 5 x 5.00 Wheel Bolt Pattern, 24 Spline Drive Flange, Bolts / Bearings / Hub Seal / Lug Nuts / Plate / Studs Included, Steel, Black Oxide, Kit
Item #: PEMGNHRK5X5
Condition: New
Limited Supply: Only 0 Left!
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Price: $492.14
Sale: $474.97
Save: 3%
Save: $17.17

Description: Gear Cover, 6-Bolt, 3.15 in OD Ball Bearings, Aluminum, Black Anodized, Quick Change Rear Ends, Kit
Item #: PEMQCC0040BBB6B-K
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING!
Free Ground Shipping
Price: $288.99
Sale: $285.97
Save: 1%
Save: $3.02

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Description: Rear Axle Housing, Ford 9 in Floater, 62 in Wide, Centered, 5 x 4.75 in Hub, 0.810 in Thick Rotors, Steel Hub, Steel, Natural, Kit
Item #: PEMHNK3103104
Condition: New
Limited Supply: Only 3 Left!
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Price: $1,239.28
Sale: $1,174.65
Save: 5%
Save: $64.63

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Description: Axle Shaft, 32-1/2 in Long, 31 Spline Carrier, 24 Spline Drive Flange, Steel, Natural, Each
Item #: PEMW532531
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Orders over $149 ship free. Oversize items are excluded.
Price: $132.04
Sale: $109.97
Save: 17%
Save: $22.07
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Description: Differential Case, Assembled, 4.56 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS45631
Condition: New
Limited Supply: Only 0 Left!
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Price: $800.99
Sale: $792.97
Save: 1%
Save: $8.02

Description: Differential Case, Assembled, 5.14 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS51431
Condition: New
Limited Supply: Only 3 Left!
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Price: $800.99
Sale: $792.97
Save: 1%
Save: $8.02

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Description: Differential Case, Assembled, 5.29 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS52931
Condition: New
Limited Supply: Only 1 Left!
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Price: $800.99
Sale: $792.97
Save: 1%
Save: $8.02

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Description: Differential Case, Assembled, 5.43 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS54331
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
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Price: $800.99
Sale: $792.97
Save: 1%
Save: $8.02

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Description: Differential Case, Assembled, 5.67 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS56731
Condition: New
Limited Supply: Only 4 Left!
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Price: $800.99
Sale: $792.97
Save: 1%
Save: $8.02

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Description: Differential Case, Assembled, 5.83 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS58331
Condition: New
Limited Supply: Only 2 Left!
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Price: $842.00
Sale: $809.97
Save: 4%
Save: $32.03

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Description: Differential Case, Assembled, 6.00 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS60031
Condition: New
Limited Supply: Only 1 Left!
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Price: $792.00
Sale: $755.97
Save: 5%
Save: $36.03

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Description: Differential Case, Assembled, 6.20 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS62031
Condition: New
Limited Supply: Only 4 Left!
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Price: $792.00
Sale: $755.97
Save: 5%
Save: $36.03

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Description: Differential Case, Assembled, 6.33 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS63331
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
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Free Ground Shipping
Price: $792.00
Sale: $755.97
Save: 5%
Save: $36.03

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Description: Differential Case, Assembled, 6.50 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS65031
Condition: New
Limited Supply: Only 6 Left!
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Price: $792.00
Sale: $755.97
Save: 5%
Save: $36.03

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Description: Grease, DAYLube, Conventional, 16 oz Cartridge, Each
Item #: PEMDAYLUBETUBE16OZ
Condition: New
Same Day Shipping!
Orders over $149 ship free. Oversize items are excluded.
Price: $58.98
Sale: $57.97
Save: 2%
Save: $1.01
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Description: Differential Case, Assembled, 5.83 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS58331LW
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
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Price: $851.99
Sale: $842.97
Save: 1%
Save: $9.02

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Description: Differential Case, Assembled, 6.50 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS65031LW
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
FREE SHIPPING!
Free Ground Shipping
Price: $851.99
Sale: $842.97
Save: 1%
Save: $9.02

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Description: Differential Case, Assembled, 6.66 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS66631LW
Condition: New
Limited Supply: Only 2 Left!
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Price: $869.00
Sale: $819.81
Save: 6%
Save: $49.19

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Description: Differential Case, Assembled, 6.83 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS68331LW
Condition: New
Limited Supply: Only 3 Left!
Same Day Shipping!
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Price: $869.00
Sale: $814.97
Save: 6%
Save: $54.03

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Description: Differential Case, Assembled, 7.00 Ratio, 31 Spline, Steel Spool, Natural, Ford 9 in, Each
Item #: PEMCSFS70031LW
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
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Price: $878.99
Sale: $869.97
Save: 1%
Save: $9.02

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Description: Axle Housing Seal, Inner, O-Ring Outer Seal, Aluminum, Orange Anodized, 2.600 in ID Steel Axle Tube, Each
Item #: PEMF9AXTS3KIT
Condition: New
Limited Supply: Only 8 Left!
Same Day Shipping!
Orders over $149 ship free. Oversize items are excluded.
Price: $39.99
Sale: $38.97
Save: 3%
Save: $1.02
Qty:

Description: Rear Axle Housing, Ford 9 in Floater, 58 in Wide, Centered, 2.5 in GN Hubs, Steel, Natural, Each
Item #: PEMHN290290
Condition: New
Limited Supply: Only 0 Left!
Same Day Shipping!
FREE SHIPPING!
Free Ground Shipping
Price: $588.99
Sale: $582.97
Save: 1%
Save: $6.02

Items 1-25 of 153

More About PEM

We, at PEM have 20+ years experience in the manufacturing business. We are based in the midwest about 1 hour Southwest of St. Louis, MO on I-44. Our goal is to serve you with quality rear end and drive shaft products with competitive pricing.