TTB50 Coil Over Kit – 4” Lift
1980–1997 Ford F-250 4x4 & Early F-350 4x4
For years, the factory leaf-sprung TTB50 (Twin Traction Beam) front suspension has limited the ride quality and performance of these trucks. Our 4” Coil Over Kit transforms the TTB50 into what it should have been from the factory — smooth on the road, controlled at speed, tows trailers very well and highly capable off road.
With 14 inches of front wheel travel, this system soaks up whoops, articulates through rocky terrain, and dramatically improves overall handling. It is a fully engineered, bolt-on system designed to deliver modern suspension performance while retaining the strength and advantages of the TTB platform.
Why Keep the TTB50 Instead of Swapping to a Dana 60?
Many owners swap to a Dana 60 to solve factory leaf spring issues — and we did too for years. After extensive design and testing, we now prefer a properly built TTB50 for several reasons:
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Nearly as strong as a Dana 60 (with axle shaft upgrade options available)
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Significantly more ground clearance
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Independent beam articulation
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Approximately 1.5x the suspension travel of a Dana 60
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More cost-effective than building a comparable Dana 60 setup
If you were to build a Dana 60 to this level — tuned coil overs, radius arms, etc. — you would still need to purchase and likely rebuild the axle itself.
Kit Features
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100% Bolt-On
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True 4” Lift
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14” of front wheel travel
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Retains factory beam pivot brackets
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No drop pitman arm required
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Corrected camber via precision cut-and-turned beams
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Designed for superior on-road and off-road performance
Our test truck (1997 F-250 crew cab short bed) sits similar to a leveled factory F-350 and clears 37” tires with only minor front bumper trimming.
What’s Included
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Cut & turned TTB beams (plated for added strength)
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New polyurethane pivot bushings
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King 2.5” x 10" coil overs that are custom tuned with upgraded stainless steel shafts with springs
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King 2.5” air bumps
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Shock towers
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Bump stop brackets
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Radius arms
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Radius arm brackets
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Limit straps
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Adjustable camber/caster bushings
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All required hardware
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Detailed install instructions
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Free Carrick Customs shirt (add size in order notes)
Optional Upgrades
Core Charge
There is a $500 refundable core charge for the beams.
This will be refunded once your stock beams are received and confirmed usable. Please review our Core Return Policy prior to purchase.
Shipping & Lead Time
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Kits are pallet shipped.
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Shipping price shown is an estimate based on residential delivery with lift gate service.
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Commercial addresses with lift gate access typically reduce shipping by $100–$150.
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Exact shipping quotes available upon request.
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If actual shipping is less than paid, we refund the difference.
Due to the size and production requirements of this kit, please allow 6-8 weeks for processing and shipping.
Important Purchase Information
This is a large, made-to-order suspension system that requires significant production time and material investment. Refunds cannot be offered unless there are extenuating circumstances. Please ensure you are fully committed prior to purchasing.
Install Instructions
There is a $500 refundable core charge for the beams. Please review our Core Return Policy HERE.
*Please note: this is a very large product that takes an amplitude of time, effort, and money to keep in production. We cannot offer refunds unless there are extenuating circumstances. Please make sure you are fully committed before purchasing.
