1969-1970 Watts Link Full & Semi Floaters Rear Suspension

NOTE: This item will ship via LTL carrier. You may order online and will be notified of freight charges due when your order is ready for shipment. Please allow 10-12 weeks to ship.

The Watts Link is available three ways and all three are our watts design: 9” full floater, 9” standard semi-floating axle and knock down kit for the do-it-yourself enthusiast.

The shocks and coil overs are an integral part of any suspension. We utilize the proven QA1 double adjustable DS403 10" shocks and coilovers. QA1’s double adjustable shocks have 18 positions of compression and 18 positions of rebound adjustment on each giving you 324 valving options. There are no jumps when adjusting between any two clicks. Each adjustment has been carefully defined to provide the ideal force curve to maximize performance.

Full floater 9”: For the mustang enthusiast that wants the best of the best with added strength, safety, reliability, and the cornering of a car on rails. This hercules comes complete and ready for easy bolt in.

Kit includes:

• Full floater rear differential with the pivot and swing arm tabs welded on and black powdercoated
• QA1 Shocks & Coilovers
• Watts Links & Heim Joints
• Frame Rail Brackets
• Swing Arms & End Links (swing arms black powdercoated)
• Spacers
• Hardware Kit
• Shock Support (black powdercoated)
• Wilwood 4-Piston (choice) Red or Black Calipers
• Rear Axle Brake Line

Standard 9” semi floating: This workhorse is one of the most popular, it meets our MTF tough requirements and has a proven track record on the street with our updated super strong housing and beefed up center nodules. This beast is set up for the street scene it is complete and ready for easy bolt in.

Kit includes:

• Semi floater rear differential with the pivot and swing arm tabs welded on and black powdercoated
• Aluminum Daytona Pinion Support for 450+ HP
• 350 Forged Yoke for 450+ HP
• Motive Performance Ring & Pinion
• Ford Motorsports Trac-Lock Posi - 31 spline
• Timken USA Bearings
• QA1 Shocks & Coilovers
• Watts Links & Heim Joints
• Frame Rail Brackets
• Swing Arms & End Links (swing arms black powdercoated)
• Spacers
• Hardware Kit
• Shock Support (black powdercoated)
• Wilwood 4-Piston (choice) Red or Black Calipers
• Rear Axle Brake Line

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  Upgrade your rear suspension and add some serious handling with the MTF American made Watts Link setup.
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  If you add our Watts Link, to the MTF full sub-frame, you have almost a full frame under your mustang with no costly modifications to the body.
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  Our top mount watts design will not allow for lateral motion of the rear differential for increased control, stability and cornering. There is no bulky contraptions hanging off your differential. Our watts is out of sight and it will not disappoint.
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  Our top mount watts arms attach with a pivot point to the differential and to the frame. This keeps the rear axle centered under the car and only allows for a vertical motion.
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  QA1 double adjustable shocks and coil-overs come with our kits.
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  The frame rail covers are 7 gauge American made steel. They install simply and are self aligning from your existing rear spring mount holes. .
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  Comes in bare steel or the option of powder coated in black or hammer finish.
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  You receive all necessary grade 8 mounting hardware.

MTF Full Floater versus the Semi-Floater Watts Link

Our customers ask what is the advantages are of the MTF Watts Link full floating axle kit over a MTF Watts Link semi-floating axle kit.

First it's necessary to understand the differences of a full floating axle and a semi- floating axle.

On a semi-floating axle the wheel bolts directly to the axle.

Advantage of semi floating axle:

• They are less expensive.
• If you are using your mustang for mostly cruising and are not planning on hard cornering or track driving, then the semi-floating is the choice for you.

Disadvantage of semi floating axle:

• If the axle should ever break, the wheel could possibly exit the car.
• On hard cornering lateral forces cause axle deflection. This causes lateral rotor deflection and forces the caliper pistons back into the caliper allowing a gap between the brake pads and the rotor. The brake fluid is forced back and the next brake pedal cycle will feel as though the brake pedal will hit the floor due to insufficient fluid in the caliper piston bore. Insufficient fluid in the caliper piston bore requires the master cylinder to add more fluid to the rear brakes and less fluid to the rest of the system and thus causing a low pedal. This condition is commonly known as knockback.

Advantage of full floating axle:

• The wheel mounts to a two bearing hub and not the axle, therefore, no axle deflection. The hub carries the weight of the car. If the axle should break the wheel remains on the car and won’t exit the car.
• Eliminates lateral force and axle deflection to the rotors, so no knockback occurs.
• The axle only carries rotational power, no vertical load. Vertical load is carried by the two bearing hub. There is no vertical load on the axle.
• The load capacity increases substantially.
• There is easy center carrier exchange for the race enthusiast. Just remove the wheels, then the three bolt caps on each side. Then slide out the axles and unbolt the street center carrier. Now your ready to put in the sweet spare center carrier for the weekend of racing.

Disadvantage of full floating axle:

• Cost (but benefits are substantial.)

What about a panhard bar?

The Watts Link is an upgraded design from the panhard bar. The panhard bar cannot keep the axle centered during vertical motion and allows the differential to move horizontally.

See the tech article on Mustang 360 for installation information:

http://www.mustangandfords.com/how-to/chassis-suspension/1809-installing-a-watts-link-in-a-vintage-mustang/

For help determining wheel size, see fitment guide here.

Not a welder or want professional assistance with your build? MTF can install your Watts Link! Call us for details at 877-899-9021.