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$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

Summit Racing SpeedCard - learn how to get 10% back - Get Details!

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1970 DODGE CHALLENGER Differential & Rear-End Components

Individual Parts

Results 1 - 20 of 20

Gear, Ring and Pinion, 4.10:1 Ratio, Dana 60, Set

Part Number: RMG-79-0011-1

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Gear, Ring and Pinion, 4.88:1 Ratio, Dana 60, Set

Part Number: RMG-79-0068-1

3.0 out of 5 stars ( 3 )

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Ring and Pinion Gears, 3.55:1 Ratio, 29-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 741 Case, Set

Part Number: YGA-24006

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Gear, Ring and Pinion, 6.17:1 Ratio, Dana 60, Set

Part Number: RMG-7900411

5.0 out of 5 stars ( 1 )

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Gear, Ring and Pinion, 3.73:1 Ratio, Dana 60, Set

Part Number: MGR-D60-373

5.0 out of 5 stars ( 1 )

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Gear, Ring and Pinion, 5.38:1 Ratio, Dana 60, Set

Part Number: RMG-7900131

5.0 out of 5 stars ( 2 )

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Gear, Ring and Pinion, 4.56:1 Ratio, Dana 60, Set

Part Number: RMG-79-0077-1

4.0 out of 5 stars ( 1 )

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Yukon axle kit for Chrysler 8.75"

Part Number: YGA-21759

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Gear, Ring and Pinion, 4.56:1 Ratio, Dana 60, Set

Part Number: RMG-6900531

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Gear, Ring and Pinion, 4.88:1 Ratio, Dana 60, Set

Part Number: RMG-6900541

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Powertrax Lock-Right Lockers Chrysler 8.75 Inch 1240-LR

$35.00 Mail-In Rebate

Price after Manufacturer Rebate: $689.99

Rebate Expires: 12/31/2025

Get $35 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details.

Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only.

Differential, Lock-Right, Locker, 30-Spline, Mopar, 8.75 in., Each

Part Number: PWT-1240-LR

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 2, 2026 if ordered today

  • $35.00 Mail-In Rebate

    Price after Manufacturer Rebate: $689.99

    Rebate Expires: 12/31/2025

    Get $35 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details.

    Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only.

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Estimated Ship Date: Feb 2, 2026 if ordered today

Ring and Pinion Gears, 3.90:1 Ratio, 29-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 489 Case, Set

Part Number: YGA-24011

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

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Estimated Ship Date: Jan 13, 2026 if ordered today

Ring & Pinion Gear, 4.56 Ratio, Chrysler, 8.75 in., 489, Set

Part Number: YGA-24242

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Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

Gear, Ring and Pinion, 3.73:1 Ratio, Chrysler, 8.75 in., 741 Housing, Set

Part Number: MGR-C887373M

4.75 out of 5 stars ( 4 )

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USA Standard Master Overhaul kit for Chrysler 8.75" #42 housing with 25520/90 differential bearings

Part Number: SPZ-37093

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Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

Ring and Pinion Gears, 3.73:1 Ratio, 29-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 741 Case, Set

Part Number: YGA-24007

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Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

Ring and Pinion Gears, 4.11:1 Ratio, 10-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 742 Case, Set

Part Number: YGA-24229

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Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

Ring and Pinion Gears, 3.90:1 Ratio, 10-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 742 Case, Set

Part Number: YGA-24009

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Estimated Ship Date: Jan 13, 2026 if ordered today

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Estimated Ship Date: Jan 13, 2026 if ordered today

8.75" Chrysler 89 Drop Out case, up to 500 HP, nodular iron

Part Number: SPZ-59001

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Axle Differential Case, Chrysler 8.75 in., Nodular Iron, 1.875 in. Bearing Bore, 30 Spline, Each

Part Number: YGA-32052

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Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

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