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What is a leaf spring? A leaf spring is a suspension component that is designed to suspend the weight of the vehicle, locate the vehicle’s axle, and help suppress the...
What is a leaf spring? A leaf spring is a suspension component that is designed to suspend the weight of the vehicle, locate the vehicle’s axle, and help suppress the effects of road imperfections. While most modern cars have abandoned leaf springs in favor of coil springs, leaf springs were quite common in cars and trucks before 1980, particularly in the rear suspension of the vehicle. Nowadays, you’ll still find leaf springs in a lot of heavy-duty applications, like in the rear suspension systems of large trucks, trailers, and heavy equipment.
Generally speaking, vehicle leaf springs consist of a few parts, starting...
What is a leaf spring? A leaf spring is a suspension component that is designed to suspend the weight of the vehicle, locate the vehicle’s axle, and help suppress the effects of road imperfections. While most modern cars have abandoned leaf springs in favor of coil springs, leaf springs were quite common in cars and trucks before 1980, particularly in the rear suspension of the vehicle. Nowadays, you’ll still find leaf springs in a lot of heavy-duty applications, like in the rear suspension systems of large trucks, trailers, and heavy equipment.
Generally speaking, vehicle leaf springs consist of a few parts, starting with multiple strips of steel, fiberglass, or composite plastic, arranged in an arc, and clamped together to form a single spring. The leaf spring is typically attached to the frame with a solid mount and bushing on one end and a leaf spring shackle mount and bushing at the other. The shackle affords the leaf spring some movement and makes installing replacement leaf springs a bit easier. Leaf springs are a part of your vehicle’s suspension system and, in addition to supporting vehicle weight, keep your axle centered under your vehicle to ensure your rear suspension and driveline remains stable.
As alluded to above, leaf springs perform well in heavy duty applications. And it’s often easy to upgrade or replace your leaf springs to add more cargo carrying capability. Adding an individual leaf spring or helper spring to an existing leaf spring pack can increase the leaf spring’s capacity too. While applications vary, leaf helper spring kits or add-a-leaf kits typically just clamp on to the leaf spring pack to help stiffen the original leaf spring and suppress sag.
Think you need replacement leaf springs? Some symptoms of a bad leaf spring include excess body bounce, lean, or roll. You may also notice your vehicle sagging more, particularly when heavily loaded or pulling a trailer, which puts more stress on your leaf springs. Worn leaf spring bushings, either in the spring itself or the leaf spring shackle, can introduce unpleasant jolts and vibration into the cabin as well.
If you’re searching for replacement leaf springs for your car, truck, or SUV, start shopping by your specific vehicle application right here at Summit Racing. With hundreds in stock, you’re bound to find the perfect leaf spring kit for your ride.
Showing In Stock Items. Show All 21 Items.
Spring, Rear Leaf, Right, Heavy-Duty, B-Body, Chrysler, Dodge, Plymouth, Each
Part Number: DCC-P4452982
Estimated Ship Date: Tomorrow
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Spring, Rear Leaf, Right, Heavy-Duty, Dodge, Plymouth, E-Body, Each
Part Number: DCC-P4452984
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Spring, Rear Leaf, Left, Heavy-Duty, Dodge, Plymouth, E-Body, Each
Part Number: DCC-P4452985
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Lowering Springs, Rear, Black, Dodge, Plymouth, Kit
Part Number: HSS-24367
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Leaf Springs, Rear, Lowering, 1 in Drop, Multi-Leaf, Geometry Corrected for Mopar B-Body, Bolt-On, Black Painted, w/Mount Hware, Dodge, Plymouth, Kit
Part Number: HSS-24366
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Leaf Springs Performance, Lowering, Sport, Rear, Geometry Corrected; 1.00 in. Drop, Black Painted, Dodge, Pair
Part Number: HSS-24385WH
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Leaf Spring; Lowering, Sport, Rear, Geometry Corrected; 1.00 in. Drop, Black Painted, Dodge, Pair
Part Number: HSS-24385
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Leaf Springs, Rear, Lowering, 1 in Drop, Diamond Cut Multi-Leaf, Geometry Corrected for Mopar B-Body, Bolt-On, Black Painted, Dodge, Plymouth, Pair
Part Number: HSS-24366WH
Not Yet Reviewed
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Suspension Lift, Softride Coil Spring, Front, Dodge, Plymouth, Pair
Part Number: SJA-D200
Not Yet Reviewed
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Leaf Springs, Softride, Front, Dodge, Plymouth, Pair
Part Number: SJA-D600
Not Yet Reviewed
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Leaf Springs, Lifted, 4.00 in., Rear, Black, Dodge, Plymouth, Pair
Part Number: ROU-8034KIT
Not Yet Reviewed
Estimated Ship Date: Jan 19, 2026 if ordered today
Estimated Ship Date: Jan 19, 2026 if ordered today
Lowering Springs, Rear, Black, Dodge, Plymouth, Kit
Part Number: HSS-24368
Not Yet Reviewed
Estimated Ship Date: Tomorrow
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Lift Spring, Leaf-Style, Front, Black, 4WD, Dodge, W-Series, Ram Pickup, 4 inch Lift, Each
Part Number: TFY-38470
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Leaf Springs, Performance, Geometry Corrected, Black, Dodge, Plymouth, Pair
Part Number: HSS-24368WH
Not Yet Reviewed
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Estimated Ship Date: Tomorrow
Lift Spring, Leaf-Style, Front, Black, 4WD, Dodge, W-Series, Ram Pickup, 6 inch Lift, Each
Part Number: TFY-38670
Not Yet Reviewed
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Summit Racing™ Rear Leaf Springs for 1970-1974 CHALLENGER, CUDA - SUM-708221
