QA1 Rear Suspension Conversion Systems

4.53 out of 5 stars 19 Customer Reviews

QA1 rear suspension conversion systems provide easy, bolt-in options to replace your coil springs on factory truck arms—without any cutting, welding, or other fabricating. Each kit contains frame brackets, axle brackets, linkage assemblies, a crossmember assembly, and necessary hardware. The conversions are available with coilovers or available for use with the factory springs. Order the model designed for fitment on your specific vehicle, and enjoy the stance, handling, and suspension performance of a revolutionary QA1 system.

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QA1 Rear Suspension Conversion Systems R210-200

Rear Suspension Package, 0-6.00 in. drop, Includes C-notch. Medium Ride, Double Adjustable. C10, 63-72

Part Number: QA1-R210-200

4.25 out of 5 stars ( 4 )

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QA1 Rear Suspension Conversion Systems R110-200

Rear Suspension Package, 0-6.00 in. drop, Includes C-notch. Medium Ride, Single Adjustable. C10, 63-72

Part Number: QA1-R110-200

4.67 out of 5 stars ( 3 )

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QA1 Rear Suspension Conversion Systems R130-200

Rear Suspension System, Adjustable, Single Adjustable Coilover, 200 lbs./in., Torque Arm, Panhard Bar, GM 10-Bolt, Chevy C10, Kit

Part Number: QA1-R130-200

5.0 out of 5 stars ( 1 )

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QA1 Rear Suspension Conversion Systems R110-250

Rear Suspension Package, 0-6.00 in. drop, Includes C-notch. Firm Ride, Single Adjustable. C10, 63-72

Part Number: QA1-R110-250

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R131-200

Rear Suspension System, Adjustable, Single Adjustable Coilover, 200 lbs./in., Torque Arm, Panhard Bar, GM 12-Bolt, Chevy C10, Kit

Part Number: QA1-R131-200

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems for 1973-1979 F-100, 1975-1979 F-150 - R221-200

Rear Coilover Conversion System, Double Adjustable, 200 lbs./in. Spring Rate, Ford, Kit

Part Number: QA1-R221-200

Not Yet Reviewed

Estimated Ship Date: Feb 12, 2026 if ordered today

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Estimated Ship Date: Feb 12, 2026 if ordered today

QA1 Rear Suspension Conversion Systems R210-170

Rear Suspension Package, 0-6.00 in. drop, Includes C-notch. Soft Ride, Double Adjustable. C10, 63-72

Part Number: QA1-R210-170

5.0 out of 5 stars ( 1 )

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R132-200

Rear Suspension System, Adjustable, Single Adjustable Coilover, 200 lbs./in., Torque Arm, Panhard Bar, Ford 9 in., Chevy C10, Kit

Part Number: QA1-R132-200

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R132-250

Rear Suspension System, Adjustable, Single Adjustable Coilover, 250 lbs./in., Torque Arm, Panhard Bar, Ford 9 in., Chevy C10, Kit

Part Number: QA1-R132-250

5.0 out of 5 stars ( 1 )

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R232-200

Rear Suspension System, Adjustable, Double Adjustable Coilover, 200 lbs./in., Torque Arm, Panhard Bar, Ford 9 in., Chevy C10, Kit

Part Number: QA1-R232-200

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems R110-170

Rear Suspension Package, 0-6.00 in. drop, Includes C-notch. Soft Ride, Single Adjustable. C10, 63-72

Part Number: QA1-R110-170

3.0 out of 5 stars ( 2 )

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QA1 Rear Suspension Conversion Systems R232-170

Rear Suspension System, Adjustable, Double Adjustable Coilover, 170 lbs./in., Torque Arm, Panhard Bar, Ford 9 in., Chevy C10, Kit

Part Number: QA1-R232-170

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems for 1973-1979 F-100, 1975-1979 F-150 - R121-170

Rear Coilover Conversion System, Single Adjustable, 170 lbs./in. Spring Rate, Ford, Kit

Part Number: QA1-R121-170

Not Yet Reviewed

Estimated Ship Date: Feb 12, 2026 if ordered today

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Estimated Ship Date: Feb 12, 2026 if ordered today

QA1 Rear Suspension Conversion Systems R210-250

Rear Suspension Package, 0-6.00 in. drop, Includes C-notch. Firm Ride, Double Adjustable. C10, 63-72

Part Number: QA1-R210-250

Not Yet Reviewed

Estimated Ship Date: Today

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R231-200

Rear Suspension System, Adjustable, Double Adjustable Coilover, 200 lbs./in., Torque Arm, Panhard Bar, GM 12-Bolt, Chevy C10, Kit

Part Number: QA1-R231-200

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems R230-200

Rear Suspension System, Adjustable, Double Adjustable Coilover, 200 lbs./in., Torque Arm, Panhard Bar, GM 10-Bolt, Chevy C10, Kit

Part Number: QA1-R230-200

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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QA1 Rear Suspension Conversion Systems R130-170

Rear Suspension System, Adjustable, Single Adjustable Coilover, 170 lbs./in., Torque Arm, Panhard Bar, GM 10-Bolt, Chevy C10, Kit

Part Number: QA1-R130-170

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems R232-250

Rear Suspension System, Adjustable, Double Adjustable Coilover, 250 lbs./in., Torque Arm, Panhard Bar, Ford 9 in., Chevy C10, Kit

Part Number: QA1-R232-250

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R231-170

Rear Suspension System, Adjustable, Double Adjustable Coilover, 170 lbs./in., Torque Arm, Panhard Bar, GM 12-Bolt, Chevy C10, Kit

Part Number: QA1-R231-170

Not Yet Reviewed

Estimated Ship Date: Today

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R131-250

Rear Suspension System, Adjustable, Single Adjustable Coilover, 250 lbs./in., Torque Arm, Panhard Bar, GM 12-Bolt, Chevy C10, Kit

Part Number: QA1-R131-250

Not Yet Reviewed

Estimated Ship Date: Today

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R230-170

Rear Suspension System, Adjustable, Double Adjustable Coilover, 170 lbs./in., Torque Arm, Panhard Bar, GM 10-Bolt, Chevy C10, Kit

Part Number: QA1-R230-170

Not Yet Reviewed

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QA1 Rear Suspension Conversion Systems R230-250

Rear Suspension System, Adjustable, Double Adjustable Coilover, 250 lbs./in., Torque Arm, Panhard Bar, GM 10-Bolt, Chevy C10, Kit

Part Number: QA1-R230-250

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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QA1 Rear Suspension Conversion Systems for 1975-1986 C10, 1973-1974 C10 PICKUP, 1987 R10 - R231-250

Rear Suspension System, Adjustable, Double Adjustable Coilover, 250 lbs./in., Torque Arm, Panhard Bar, GM 12-Bolt, Chevy C10, Kit

Part Number: QA1-R231-250

Not Yet Reviewed

Estimated Ship Date: Today

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QA1 Rear Suspension Conversion Systems for 1973-1979 F-100, 1975-1979 F-150 - R222-170

Rear Coilover Conversion System, Double Adjustable, 170 lbs./in. Spring Rate, Ford, Kit

Part Number: QA1-R222-170

Not Yet Reviewed

Estimated Ship Date: Feb 12, 2026 if ordered today

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Estimated Ship Date: Feb 12, 2026 if ordered today

QA1 Rear Suspension Conversion Systems for 1973-1979 F-100, 1975-1979 F-150 - R221-250

Rear Coilover Conversion System, Double Adjustable, 250 lbs./in. Spring Rate, Ford, Kit

Part Number: QA1-R221-250

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 12, 2026 if ordered today

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Estimated Ship Date: Feb 12, 2026 if ordered today

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