BUICK Summit Racing Differential & Rear-End Components

Clutch Kit, Street-Strip Performance, 1-1/8 in. Shaft, 10-Spline, 11 in. Organic/Ceramic Disc, GM, Kit

Part Number: SUM-700932

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Differential Carrier, Positraction, Nodular Iron, GM 8.5 in., 28 Spline, 2.73 Up Ratio, Each

Part Number: SUM-730966

5.0 out of 5 stars ( 4 )

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Differential Carrier, Positraction, Nodular Iron, GM 8.875 in., 30 Spline, 3.08 to 3.90 Ratio, Each

Part Number: SUM-730946

5.0 out of 5 stars ( 5 )

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Differential Carrier, Positraction, Nodular Iron, GM 7.5/7.6 in., 26 Spline, 3.23 Up Ratio, Each

Part Number: SUM-730958

4.33 out of 5 stars ( 6 )

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Differential Carrier, Positraction, Nodular Iron, GM 7.5/7.6 in., 28 Spline, 3.23 Up Ratio, Each

Part Number: SUM-730960

5.0 out of 5 stars ( 1 )

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Differential Carrier, Positraction, Nodular Iron, GM 8.2 in., 28 Spline, 3.08 Up Ratio, Each

Part Number: SUM-730962

4.57 out of 5 stars ( 7 )

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Clutch Kit, Street-Strip Performance, 1-1/8 in. Shaft, 26-Spline, 11 in. Organic/Ceramic Disc, GM, Kit

Part Number: SUM-700930

5.0 out of 5 stars ( 1 )

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Differential Cover, Aluminum, Black Powdercoated, GM, 12-Bolt 8.875 in., Passenger, Kit

Part Number: SUM-730513B

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Clutch Kit, Street-Strip Performance, 1-1/8 in. Shaft, 26-Spline, 10.5 in. Organic/Ceramic Disc, GM, Kit

Part Number: SUM-700934

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Clutch Kit, Street-Strip Performance, 1-1/8 in. Shaft, 10-Spline, 10.5 in. Organic/Ceramic Disc, GM, Kit

Part Number: SUM-700928

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Differential Carrier, Positraction, Nodular Iron, GM 8.5/8.6 in., 30 Spline, 2.73 Up Ratio, Each

Part Number: SUM-730968

5.0 out of 5 stars ( 10 )

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Differential Carrier, Positraction, Nodular Iron, GM 8.2 in. BOP, 28 spline, 3.31 Up Ratio, Each

Part Number: SUM-730964

5.0 out of 5 stars ( 1 )

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Differential Carrier, Positraction, Nodular Iron, GM 8.75 in., 33 Spline, 3.08 to 3.90 Ratio, Each

Part Number: SUM-730948

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Rear End Assembly, Grand National, Ford 9 in., 31-Spline Axles, 5 x 4.75 in. Pattern, G-Body Mounts, Kit

Part Number: SUM-CSUMCT006

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Estimated Ship Date: Tomorrow

Drive Flange Snap Ring, Replacement, Grand National Axle, Each

Part Number: SUM-CTGNSR

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Drive Flange Lock Washer, Replacement, Grand National Axle, Each

Part Number: SUM-CTGNLW

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Estimated Ship Date: Nov 5, 2025 if ordered today

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Rear End Assembly, Grand National, Ford 9 in., 28-Spline Axles, 5 x 4.75 in. Pattern, G-Body Mounts, Kit

Part Number: SUM-CSUMCT005

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Estimated Ship Date: Tomorrow if ordered today

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Rear End Assembly, Grand National, Ford 9 in., 28-Spline Axles, 5 x 5.00 in. Pattern, G-Body Mounts, Kit

Part Number: SUM-CSUMCT007

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Estimated Ship Date: Tomorrow if ordered today

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Drive Flange Screws, Replacement, Grand National Axle, Pair

Part Number: SUM-CTGNDFSK

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Drive Flange Nut, Replacement, RH Thread, Grand National Axle, Each

Part Number: SUM-CTGNSN

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Estimated Ship Date: Dec 8, 2025 if ordered today

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