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Kenworth T300-T450 Shock Absorbers

Enhance your ride with top-notch Kenworth T300-T450 shock absorbers from 4 State Trucks. Featuring trusted brands like Bulldog HD Shocks and BESTfit, these shocks are your go-to for a smoother drive. Update your vehicle's suspension for a better driving experience now!
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  • Bulldog Suspension Shock Front, Extended Length 26.85 Inch, Collapsed 16.61 Inch

    Bulldog Suspension Shock Front, Extended Length 26.85 Inch, Collapsed 16.61 Inch

    BULLDOG HD SHOCKS

    $42.33
    Front Suspension Shock Extended Length 26.85 Inch, Collapsed 16.61 InchRestore dependable steering response and ride quality with this high-quality Bulldog Front Suspension Shock designed for...
    09-05000005
    SKU:
    09-05000005
    Product Type:
    Frame & Chassis
    Style Options:
    Heavy Duty
    Length Options:
    27 Inch
    Make:
    Universal Items
    $42.33
    Qty in Cart: 0
    Price:
    $42.33
    Subtotal:
  • Shock Mount Bracket 7-1/4 Inch CB to Eye For 1.0 Stud - Kenworth

    Shock Mount Bracket 7-1/4 Inch CB to Eye For 1.0 Stud - Kenworth

    AFTERMARKET

    $134.99
    Shock Bracket Replaces K324383* High Quality Shock Bracket* Dimensions: - 7-1/4 Inch CB To Eye - 10.25 Inch Length - 4.00 Inch Width* For 1.0 Stud* Has Nib 2.0 Inch Offset CB Hole* No Tow Eye* Made...
    02-05090009
    SKU:
    02-05090009
    Material Options:
    Steel
    Length Options:
    10 1/4 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $134.99
    Qty in Cart: 0
    Price:
    $134.99
    Subtotal:
  • Shock Bolt Kit, 14.Inch Ride Heights - KIT11104 For Meritor

    Shock Bolt Kit, 14.Inch Ride Heights - KIT11104 For Meritor

    AUTOMANN USA

    $16.18
    Shock Bolt Kit Replaces Kit11104* High Quality Shock Bolt Kit* Consists Of  - (1) Cap Screw 3/4 Inch X 3-1/2 Inch - (1) Shock Bolt 3/4in -10 x 4-1/2in Lg - (2) Lock Nut 3/4in -10* 14.Inch Ride...
    09-05250038
    SKU:
    09-05250038
    Length Options:
    3 1/2 Inch
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $16.18
    Qty in Cart: 0
    Price:
    $16.18
    Subtotal:
  • Shock Spacer - 1.5 In OD, 0.81 In ID For Hendrickson Turner

    Shock Spacer - 1.5 In OD, 0.81 In ID For Hendrickson Turner

    AUTOMANN USA

    $5.67
    Shock Spacer Replaces E11831, A20913* High Quality Shock Spacer* 1 1/2 In OD * 0.810 Inch ID* 1.15625In Thickness* Sold Individually * Warranty On Shock Spacers Against Defects In Workmanship &...
    09-05250082
    SKU:
    09-05250082
    Diameter Options:
    1 1/2 Inch
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $5.67
    Qty in Cart: 0
    Price:
    $5.67
    Subtotal:
  • Shock Spacer - 1 1/2 In OD, 3/4 In ID For Hendrickson Turner

    Shock Spacer - 1 1/2 In OD, 3/4 In ID For Hendrickson Turner

    AUTOMANN USA

    $6.34
    0.78 Inch Tall Shock Spacer* High Quality Shock Spacer* 3/4 Inch ID* 1.5In OD * 0.78 Inch Height * Sold Individually * Warranty On Shock Spacers Against Defects In Workmanship & Material From Date Of...
    09-05250081
    SKU:
    09-05250081
    Material Options:
    Brass
    Diameter Options:
    3/4 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $6.34
    Qty in Cart: 0
    Price:
    $6.34
    Subtotal:
  • 1.5 Inch Shock Spacer, 2.25 In OD, 0.77 In ID

    1.5 Inch Shock Spacer, 2.25 In OD, 0.77 In ID

    AUTOMANN USA

    $9.25
    1.5 Inch Shock Spacer Replaces A23645Maintain perfect suspension alignment with this reliable 1.5 Inch Shock Spacer. With a 2.25-inch OD, 0.77-inch ID, and 1.5-inch height, it strengthens your shock...
    09-05250083
    SKU:
    09-05250083
    Material Options:
    Brass
    Diameter Options:
    3/4 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $9.25
    Qty in Cart: 0
    Price:
    $9.25
    Subtotal:
  • Rear Upper Shock Bracket Chalmer

    Rear Upper Shock Bracket Chalmer

    AFTERMARKET

    $71.99
    Chalmers Upper Shock Bracket Replaces 800154. 3516765C1Keep your Chalmers suspension aligned with the Rear Upper Shock Bracket. Measuring 2.5 inches center-to-center, it ensures an exact fit for...
    29-05100277
    SKU:
    29-05100277
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Gabriel Fleetline Drive Shock Absorbers Replaces 65504

    Gabriel Fleetline Drive Shock Absorbers Replaces 65504

    GABRIEL

    $91.99
    Drive Shock Absorbers Fits Hendrickson, International, Kenworth, Volvo & Western StarBuilt to meet the demands of heavy-duty operation, the Gabriel FleetLine Drive Shock Absorber offers a reliable...
    29-0500027
    SKU:
    29-0500027
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $91.99
    Qty in Cart: 0
    Price:
    $91.99
    Subtotal:
  • On Sale
    FREE SHIPPING OVER $249
    Limited Quantity Available
    Gabriel Fleetline Steer Drive Shock Absorber Replaces 65436, 557033

    Gabriel Fleetline Steer Drive Shock Absorber Replaces 65436, 557033

    GABRIEL

    Now: $22.16
    Was: $79.99
    Steer Drive Shock Absorber Fits Kenworth & FreightlinerExperience smoother handling and enhanced vehicle stability with the Gabriel Fleetline Steer Drive Shock Absorber, designed for both steer and...
    29-0500025
    SKU:
    29-0500025
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $22.16
    Was: $79.99
    Qty in Cart: 0
    Price:
    Now: $22.16
    Was: $79.99
    Subtotal:
  • Gabriel Fleetline Drive Shock Absorber Replaces 65495, 66436 For Kenworth & Peterbilt

    Gabriel Fleetline Drive Shock Absorber Replaces 65495, 66436 For Kenworth & Peterbilt

    AFTERMARKET

    $92.99
    Drive Shock Absorber Fits Kenworth & PeterbiltEnhance the performance and stability of your Kenworth or Peterbilt truck with the Gabriel Fleetline Drive Shock Absorber. This high-quality drive shock...
    29-0500005
    SKU:
    29-0500005
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $92.99
    Qty in Cart: 0
    Price:
    $92.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Gabriel Fleetline Drive Shock Absorber Replaces 65524

    Gabriel Fleetline Drive Shock Absorber Replaces 65524

    GABRIEL

    $81.99
    Drive Shock Absorber Fits KenworthImprove your truck's suspension efficiency with the Gabriel Fleetline Drive Shock Absorber. Engineered for precision, this high-quality shock features 17.27-inch...
    02-0500004
    SKU:
    02-0500004
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $81.99
    Qty in Cart: 0
    Price:
    $81.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Gabriel Fleetline Drive Shock Absorber Replaces 65523

    Gabriel Fleetline Drive Shock Absorber Replaces 65523

    GABRIEL

    $90.99
    Drive Shock Absorber Fits Kenworth* High Quality Drive Shock* Extended Length 19.04 Inch* Collapsed Length 12.35 Inch* Sold Individually* Warranty On Drive Shocks Against Defects In Workmanship &...
    02-0500003
    SKU:
    02-0500003
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $90.99
    Qty in Cart: 0
    Price:
    $90.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Monroe Magnum Shock Absorber For Drive Axle Suspension W/ Flex Air & AG380 Suspension

    Monroe Magnum Shock Absorber For Drive Axle Suspension W/ Flex Air & AG380 Suspension

    OPP - ORIGINAL PARTS PROGRAM

    Now: $25.67
    Was: $97.60
    Yellow Monroe Magnum Shock Absorber Fits Drive Axle Suspension W/ Flex AirChoose a reliable suspension replacement with this Monroe Magnum Shock Absorber for drive axle suspension. Made with a...
    29-050006
    SKU:
    29-050006
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Diameter Options:
    5/8 Inch
    Color:
    Yellow
    Length Options:
    30 1/2 Inch
    Product Type:
    Frame & Chassis
    Now: $25.67
    Was: $97.60
    Qty in Cart: 0
    Price:
    Now: $25.67
    Was: $97.60
    Subtotal:
  • FREE SHIPPING OVER $249
    Gabriel Shock Absorber Replaces 85069, 661400, 66584440Y For Peterbilt & Kenworth

    Gabriel Shock Absorber Replaces 85069, 661400, 66584440Y For Peterbilt & Kenworth

    GABRIEL

    $71.99
    Gabriel 85069 Shock AbsorberMaintain superior ride control on your Peterbilt or Kenworth truck with this Gabriel Fleetline Shock Absorber, replacing OE numbers 85069, 661400, and 66584440Y. Designed...
    29-050017
    SKU:
    29-050017
    Length Options:
    15 Inch
    Truck Class:
    Heavy Duty
    Size Options:
    10 Stroke
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Load-Share Shock Bolt With Shoulder Used In Front Air Ride Kits

    Load-Share Shock Bolt With Shoulder Used In Front Air Ride Kits

    LOAD-SHARE SUSPENSIONS

    $60.99
    Shock BoltLooking for a reliable shock bolt for your front air ride kit or other projects? Check out our 3/4-inch Shock Bolt with Shoulder! It's the perfect fit for securely mounting shocks with ease...
    29-050007
    SKU:
    29-050007
    Width Options:
    3/4 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $60.99
    Qty in Cart: 0
    Price:
    $60.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Shock Bushing 1.5 Inch Od X 3/4 Inch ID

    Shock Bushing 1.5 Inch Od X 3/4 Inch ID

    ENERGY SUSPENSION

    $4.07
    Shock Bushing* High Quality Shock Bushing* Made Of Polyurethane* 1/2 Hour Glass, 1-1/2 Inch O.D. X 3/4 Inch I.D. * 4 Pieces* Pack Of 4, One Package Per Shock* Sold Individually* Made In USA* Warranty...
    29-050001
    SKU:
    29-050001
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Diameter Options:
    1 1/2 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $4.07
    Qty in Cart: 0
    Price:
    $4.07
    Subtotal:
  • Bulldog HD Rear Shock Absorber Replaces 60680-004L, 64178-001, 659048, H60680004

    Bulldog HD Rear Shock Absorber Replaces 60680-004L, 64178-001, 659048, H60680004

    BULLDOG HD SHOCKS

    $82.99
    Shock Absorber Fits Freightliner, International, Kenworth, Mack & PeterbiltBulldog HD shocks are fleet tested and approved. This is a premium rear replacement shock reengineered to be better than the...
    29-050000068
    SKU:
    29-050000068
    Truck Class:
    Heavy Duty
    Length Options:
    21 Inch
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $82.99
    Qty in Cart: 0
    Price:
    $82.99
    Subtotal:
  • Bulldog HD Rear Shock Absorber 12.05 Comp. Length, 6.77 Inch Stroke Replaces 1091379, 3199949, 3199980, 3919949 For Peterbilt, Kenworth

    Bulldog HD Rear Shock Absorber 12.05 Comp. Length, 6.77 Inch Stroke Replaces 1091379, 3199949, 3199980, 3919949 For Peterbilt, Kenworth

    BULLDOG HD SHOCKS

    $49.17
    Shock Absorber Fits Peterbilt 367, 386, 587, Kenworth K100, T300-T450, T2000, T600, T800 & W900Bulldog HD shocks are fleet tested and approved. This is a premium rear replacement shock reengineered...
    29-050000028
    SKU:
    29-050000028
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    Material Options:
    Steel
    Diameter Options:
    2 Inch
    Finish Options:
    Chrome-Plated
    Length Options:
    19 Inch
    Ready To Ship:
    Yes
    $49.17
    Qty in Cart: 0
    Price:
    $49.17
    Subtotal:
  • Bulldog HD Cab Shock Absorber, 11.89 Comp. Length, 6.89 Inch Stroke Replaces 1091379, 3199949, 3199980, 3919949 For PACCAR

    Bulldog HD Cab Shock Absorber, 11.89 Comp. Length, 6.89 Inch Stroke Replaces 1091379, 3199949, 3199980, 3919949 For PACCAR

    BULLDOG HD SHOCKS

    $72.99
    Heavy Duty Shock Absorber Fits Peterbilt & KenworthBulldog HD shocks are fleet tested and approved. This is a premium rear replacement shock reengineered to be better than the factory part that came...
    29-050000026
    SKU:
    29-050000026
    Truck Class:
    Heavy Duty
    Length Options:
    18 Inch
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $72.99
    Qty in Cart: 0
    Price:
    $72.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Shock Bushing 1.75 Inch OD X 1 Inch ID - Pack Of 4

    Shock Bushing 1.75 Inch OD X 1 Inch ID - Pack Of 4

    ENERGY SUSPENSION

    $8.52
    Bushings For Shocks* High Quality Shock Absorber Bushings* Made Of Polyurethane * 1/2 Hour Glass, 1-3/4 Inch O.D. X 1 Inch I.D. * Pack Of 4, One Package Per Shock* Sold Individually* Made In USA*...
    29-050000
    SKU:
    29-050000
    Color:
    Red
    Truck Class:
    Universal
    Location:
    Made In USA
    Diameter Options:
    1 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $8.52
    Qty in Cart: 0
    Price:
    $8.52
    Subtotal:
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Adding your products to cart

If your Kenworth T300 or T450 feels bouncy, leans through turns, or rides rough on uneven roads, your shocks may be worn out. Replacing them helps your truck handle better, ride smoother, and reduce stress on other suspension parts.

Shocks for Air Ride Kits & Suspensions

Aftermarket Kenworth T300 and T450 shocks are designed for heavy-duty performance. They absorb road impact, minimize vibration, and keep your truck steady mile after mile. Whether you're running regional routes or multi-state long-hauls, installing a set of quality shocks will improve comfort, tire wear, and overall control. When installing new shocks, take a look at the hardware and bushings that keep them secure: - Shock bushings help isolate vibration and cut down noise. - Bolt kits and spacers ensure tight, aligned mounting. - Upper mounts and studs prevent rattling and looseness under load. Enhance your driving experience by adding additional upgrades, like Kenworth T300 or T450 level valves, Kenworth T300 or T450 air ride kits, and mounting components to help bring back a smooth, stable ride.

Frequently Asked Questions About Kenworth T300-T450 Shock Absorbers

How do I know which shock absorbers fit my Kenworth T300-T450?

Shock absorber fitment depends on the specific model year, axle position (front or rear), and original suspension configuration of your truck. Always check the part number against your truck's VIN or existing shock before ordering, and compare listed specifications such as length and mounting style to what is currently installed on your vehicle. If you are unsure, our team can help you cross-reference the correct part for your specific Kenworth setup.

How often should shock absorbers be replaced on a Kenworth T300-T450?

There is no fixed mileage interval since wear depends on load, road conditions, and driving habits. Common signs that shocks need replacing include excessive bouncing, uneven tire wear, leaking fluid on the shock body, or a noticeably rougher ride than usual. Many fleets inspect shocks during regular PM services to catch wear before it affects handling or tire life.

Can I replace shock absorbers myself, or should I have a professional do it?

Shock absorber replacement is a common DIY job for drivers and shops with basic tools and a lift or jack stands, since it typically involves removing mounting bolts and swapping the old unit for the new one. However, if your truck has air suspension or other components tied into the shock mounts, or if you're not comfortable working under a loaded vehicle, having a qualified technician handle the installation is a safer option.

Do these shock absorbers come with a warranty?

Warranty coverage varies by manufacturer and specific product, so we recommend checking the warranty details listed on each product page before purchasing. If you have questions about coverage for a specific shock absorber, our customer service team can provide that information before you buy.

What's the difference between OEM and aftermarket shock absorbers for these models?

OEM shock absorbers are built to match the exact specifications Kenworth originally used on the T300-T450 series, while aftermarket options are manufactured by third-party companies to fit the same applications, often at a different price point. Both can offer reliable performance, but it's worth comparing load ratings, materials, and brand reputation to find the option that best matches your truck's use and your budget.


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