QA1 5266, 5253 Installation Instructions Manual

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21730 Hanover Ave.

Lakeville, MN 55044

www.QA1.net

INSTALLATION INSTRUCTIONS

QA1 P/N 5266 Trailing Arm

2005-2010 Ford Mustang

READ ALL INSTRUCTIONS CAREFULLY AND THOROUGHLY PRIOR TO STARTING INSTALLATION. PRODUCTS THAT HAVE BEEN INSTALLED ARE NOT ELIGIBLE FOR
RETURN. USE THE PROPER JACKING LOCATIONS. DEATH OR SERIOUS INJURY CAN RESULT IF INSTRUCTIONS ARE NOT CORRECTLY FOLLOWED. A GOOD CHASSIS
MANUAL, AVAILABLE AT YOUR LOCAL PARTS STORE, MAY ALSO AID IN YOUR INSTALLATION.

• DISCLAIMER / WARRANTY •

QA1 WARRANTS THAT THE PRODUCTS WILL BE FREE FROM DEFECTS IN MATERIAL AND WORKMANSHIP FOR ONE YEAR FROM DATE OF SALE TO THE ORIGINAL
PURCHASER. QA1 MAKES NO OTHER WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. QA1 SHALL HAVE NO OBLIGATION UNDER THE FOREGOING WAR RANTY
WHERE THE DEFECT IS THE RESULT OF IMPROPER OR ABNORMAL USE, YOUR NEGLIGENCE, VEHICLE ACCIDENT, IMPROPER OR INCORRECT INSTALLATION OR

MAINTENANCE, NOR WHEN THE PRODUCT HAS BEEN REPAIRED OR ALTERED IN ANY WAY. QA1’S LIABILITY IN THE CASE OF DEFECTIVE PRODUCTS SUBJECT TO
THE FOREGOING WARRANTY SHALL BE LIMITED TO THE REPAIR OR REPLACEMENT, AT QA1’S OPTION, OF THE DEFECTIVE PRODUCTS.

THE USER UNDERSTANDS AND RECOGNIZES THAT RACING PARTS, SPECIALIZED STREET ROD EQUIPMENT, AND ALL PARTS AND SERVICES SOLD B Y QA1 ARE
EXPOSED TO MANY AND VARIED CONDITIONS DUE TO THE MANNER IN WHICH THEY ARE INSTALLED AND USED. QA1 SHALL BEAR NO LIABILITY FOR ANY LOSS,
DAMAGE OR INJURY, EITHER TO A PERSON OR TO PROPERTY, RESULTING FROM THE INSTALLATION, DIRECT OR INDIRECT USE OF ANY QA1 PRODUCTS OR
INABILITY BY THE BUYER TO DETERMINE PROPER USE OR APPLICATION OF QA1 PRODUCTS. WITH THE EXCEPTION OF THE LIMITED LIABILITY WARRANTY SET
FORTH ABOVE, QA1 SHALL NOT BE LIABLE FOR ANY CLAIMS, DEMANDS, INJURIES, DAMAGES, ACTIONS, OR CAUSES OF ACTION WHATSOEVER TO BUYER
ARISING OUT OF OR CONNECTED WITH THE USE OF ANY QA1 PRODUCTS. MOTORSPORTS ARE DANGEROUS; AS SUCH, NO WARRANTY OR REPRESENTATION IS
MADE AS TO THE PRODUCT’S ABILITY TO PROTECT THE USER FROM INJURY OR DEATH. THE USER ASSUMES THAT RISK!

TOOLS AND SUPPLIES REQUIRED

• Floor jack and jack stands • Tire Chocks • Lug wrench

• Grease gun • 18mm socket and combination wrench •Blue Loctite™

Removal of Stock Arm

1. With the vehicle on a level surface, place tire chocks in front of and behind the front tires.

2. Support the rear of the car on jack stands and remove the rear wheels.

3. Place a floor jack under the differential and lift up slightly to remove tension from the trailing arm bolts - make sure not

to lift the car off the jack stands. Note: Keep the jack stands supporting the car during the complete removal and

installation procedure.

4. Remove the bolts retaining the trailing arm support bracket. Two bolts can be reached from the undercar; the third bolt

is accessed under rear seat. The rear seat lower cushion is retained by two clips at the front of the cushion.

5. Unbolt the front trailing arm bolt from support bracket.

6. Clean the frame at trailing arm pivot area with a wire brush.

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Rev. 07292015

Installation of QA1 Trailing Arm

1. Install the QA1 trailing arm into trailing arm support bracket. Install the OEM bolt in the same direction as it was

removed. Use Blue Loctite™ and torque bolt to 90 lb. ft.

2. Reinstall the trailing arm support bracket and trailing arm on the vehicle. Use Blue Loctite™ on the threads and torque

to 70 lb. ft. The trailing arm should then pivot smoothly.

3. Pivot the trailing arm into position over the OE bushing. Install the rear bolt in same direction as removed.

4. Place one drop of Blue Loctite™ on clean threads and torque the nut to 90 lb. ft.

5. Although the QA1 Trailing Arm is pre-lubed, finishing the installation by lubing the front bushing with a grease gun is a

good idea. Be sure to replace the dust caps on the zerk fittings to prevent dirt and corrosion from damaging the fitting.

CHECK ALL NUT AND BOLT TIGHTNESS AFTER FIRST 10 MILES.

To further upgrade your suspension, use other QA1 suspension products such as coil-overs, shocks, struts, springs,

K-members, torque arms, panhard rods, sub-frame connectors, strut tower braces, rod ends, sway bars, tubular control

arms, spherical bearings, carbon fiber driveshafts and more. For more information, please visit www.QA1.net.

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Rev. 07292015