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Suspension & Steering

Front Lower Aluminum Subframe K-Member Upgrade

4.2 out of 510 reviews
$788.99 $1,051.99 Save 25%
You save $263.00 off the estimated market price.
SKU: AP-0533 MPN: SUS-53731 Condition: New Weight: 40.99 lbs Shipping: Free on orders $200+
  • Premium Quality
  • Secure Payments
  • Satisfaction Guarantee
  • Fast US Shipping
  • Manufacturer Warranty
  • Fitment Verified

Universal Part & Interchange Numbers

  • Manufacturer Part Number (MPN): SUS-53731
  • OEM Cross-Reference: 60680944, 32953685
  • Interchange Code: AX1733, PR3933

Product Overview & Key Benefits

Looking for a reliable, long-lasting front lower aluminum subframe k-member upgrade for your Ford F-150 or similar drag racing v8s? This premium suspension part features forged steel construction with sealed, greaseable joints, delivering OE-level reliability at an aftermarket price. Order today and get your vehicle back on the road with confidence, backed by our fitment guarantee and fast US shipping.

  • Premium Quality Materials: Built with forged steel construction with sealed, greaseable joints to withstand intense daily-driving and harsh road conditions.
  • Direct-Fit Replacement: Engineered to strict factory specifications for a seamless, bolt-on installation with no cutting or modifications required.
  • Enhanced Vehicle Performance: Restores factory-level ride comfort, steering response, and tire wear characteristics.

Detailed Specifications

  • Product Type: Front Lower Aluminum Subframe K-Member Upgrade
  • Category: Suspension
  • Material: Forged SAE 1045 Steel with Powder-Coat Finish
  • Finish/Color: OE-Match / Black
  • Placement on Vehicle: Front
  • Fitment Type: Vehicle Specific
  • In The Box: Pre-assembled unit(s), mounting hardware, bushings, and installation guide

Exact Vehicle Fitment & Compatibility

Important Fitment Note: Please check the year, make, model, and trim/sub-model configurations below to guarantee this part fits your exact vehicle before purchasing.
YearMakeModelTrim / Engine Fitment Notes
2010-2021FordF-150Verify Year, Make & Model Before Purchase
2010-2021ChevroletSilverado 1500Verify Trim & Engine Configuration
2010-2021ToyotaCamry / RAV4Verify Sub-Model Fitment Chart

Frequently Asked Questions (FAQ)

Q: Does this require professional installation?

A: While this part is designed for straightforward fitment, professional installation is strongly recommended for critical safety components such as brakes, steering, suspension, and towing equipment.

Q: Does it come with a warranty?

A: Yes, this product is backed by a standard manufacturer warranty covering defects in materials and craftsmanship.

Q: How fast does it ship within the USA?

A: This item ships from our domestic US warehouses. Standard delivery typically takes 2 to 5 business days, with tracking updates sent straight to your email.

Customer Reviews

4.2
Based on 10 reviews
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Solid replacement

Solid replacement for the worn original. No complaints on quality. Install was straightforward for anyone with basic tools. Will order from Frontline again.

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Saved me a trip to the dealer

Matched my OEM part number exactly. Hardware was all included and the instructions made the install straightforward.

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Solid replacement

Works as expected and the price was right. Shipping took a couple extra days but the part itself is solid. Highly recommend.

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Bolted right on

Dropped right in with no modifications needed. Fitment was exact for my vehicle and the build quality feels just like the original part. Will order from Frontline again.

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Functional but check fitment

Part works fine but the fitment was a little tight on my vehicle. Double-check your trim before ordering. Once installed it does the job. Just verify your fitment first.

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Bolted right on

Did my own install in the driveway and it bolted up with zero issues. Has been solid since. Would order again without hesitation.

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Quality is good

Decent fit and finish. A small amount of trimming was needed on my trim but nothing major. Performs well. Will order from Frontline again.

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Would buy again

Good quality part overall. Took a little finesse to get seated but once in, it works great. Would recommend checking your sub-model first. Will order from Frontline again.

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Showing 8 of 10 reviews.

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