Adjustable Rear Upper Control Arms with Del-Sphere Joints | 1978-1987 GM G-Body

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Adjustable Rear Upper Control Arms with Del-Sphere Joints | 1978-1987 GM G-Body
Item Description
Application
:
1978-1987 GM G-Body - Regal, Malibu, Monte Carlo, etc.
Part# 615
These adjustable rear upper control arms for the 1978-1987 GM G-Body cars outperform the flexible, stamped steel arms and soft rubber bushings that come from the factory.
Eliminate wheel hop, increase traction, and drastically improve handling with an easy bolt on installation. The Del-Sphere? pivot joints provide for "bind-free" handling and no deflection launch performance. They're available powder coated in your choice of
bright red
or
gloss black
for a brilliant and durable finish.
These adjustable rear upper control arms are constructed from 1.25" x .095" wall DOM tubing and CNC laser cut and formed 1/4" steel mounting brackets for maximum strength and durability.
The adjustability feature allows for setting the pinion angle. Our right hand and left hand threaded silver zinc plated CNC machined 4140 chrome moly double male adjuster allows for easy on-the-car adjustments, no need to unmount the control arm to make adjustments!
The control arm bushings on G-Body vehicles have a significant impact on your vehicle’s ride, comfort, handling, acceleration, noise and vibration. When the vehicle leans (rolls) in a turn, one side of the chassis moves up relative to the rear axle and the other side moves down.
The control arms must twist to allow for the axle to articulate, this causes the control arm bushings to bind. If this bind becomes excessive, it will raise the rear wheel rate and produce sudden and uncontrolled changes in handling such as snap oversteer.
The factory minimizes this suspension bind by using compliant rubber bushings. These soft bushings help accommodate the necessary motion of the control arms during body roll. However, the rubber bushings do not provide much in the way of forward and aft support which can cause wheel hop during hard acceleration and braking.
It is common to replace the stock rubber control arm bushings with polyurethane bushings to resolve the shortcomings of the factory's soft rubber bushings. Polyurethane bushings eliminate wheel hop, reduce axle deflection, and improve straight line traction. However, the downside of polyurethane bushings is they prevent the necessary movement of the control arms during body roll, which in turn produces significant binding in the suspension when the vehicle is cornering.
The polyurethane bushings also place high stresses on the control arm mounts on the vehicle. Polyurethane bushed control arms do not allow for rotation of the control arm during cornering because of the stiffness of the bushings.
Del-Sphere? Pivot Joints:
The Spohn Performance Del-Sphere? pivot joint solves the shortcomings of the factory rubber and aftermarket polyurethane bushings. Our Del-Sphere? pivot joint incorporates a spherical ball which is surrounded by Delrin® bushing cups.
Think of the Del-Sphere? pivot joint as a Delrin® bushed spherical rod end. After over a year of R&D testing here at Spohn Performance on a streetable spherical joint the Del-Sphere? pivot joint is the final result. Designed and manufactured exclusively by Spohn Performance, we have taken street suspension performance to the next level.
Our Del-Sphere? pivot joint features a one piece forged and heat treated chrome moly housing, a heat treated and chrome plated chrome moly spherical ball, Delrin® bushing cups, heat treated retainer washer and snap ring, heat treated and chrome plated chrome moly threaded adjuster ring, an external grease fitting, and a beautiful silver zinc plated housing finish.
The Delrin® bushing cups absorb shock and road noise so you get the quiet and smooth ride of a bushing as well as 28 degrees of rotation! Our Del-Sphere? pivot joints will always ship to you fully assembled, however, we also offer an optional adjusting tool that will allow you to do two things.
First, you can disassemble the Del-Sphere? pivot joint for cleaning, inspection, etc. Second, you can adjust the amount of tension on the spherical ball. The amount of tension can be easily adjusted by using our optional adjustment tool to tighten or loosen the end retainer ring.
What that means is if over time and miles the tolerances open up you can simply re-adjust the retainer ring and have your pivot joint as tight as it was the day it was brand new. We doubt you'll ever need to replace the Delrin® bushing cups, but they certainly can be. Unlike a spherical rod end, the Del-Sphere? pivot joint is 100% rebuildable.
Specifications & Features:
Eliminate wheel hop, increase traction, and drastically improve handling.
Constructed of 1.25" x .095" wall DOM tubing.
CNC laser cut and formed 1/4" steel mounting brackets for maximum strength and durability and proper fitment on factory and aftermarket rear ends.
Right hand and left hand threaded CNC machined and silver zinc plated 4140 chrome moly double male adjuster threads into 4130N chrome moly TIG welded threaded tube adapters for maximum thread strength.
3/4" Del-Sphere? pivot joints on the front ends of the control arms.
Ship to you jig set at factory length.
These are the highest quality, easiest to adjust on-the-car rear upper control arms on the market!
Easy 100% bolt in installation with the use of basic hand tools.
Available powder coated in your choice of
bright red
or
gloss black
for a brilliant and durable finish.
Priced per Pair -- Qty. 1 = 1 Pair
Specify Color Choice When Ordering:
Color:
You must specify
red
or
black
when ordering.
Related Products:
Control Arm Mounting Hardware:
New control arm mounting hardware kit. You can purchase this by searching for Part#
981
in our
eBay Store
.
Rear Axle Housing Bushings:
New rear upper control arm axle housing mounting bushings. You can purchase these by searching for Part#
610U
(polyurethane)
,
610R
(rubber),
or
610DS
(spherical)
in our
eBay Store
.
Adjustment Tool:
Del-Sphere? pivot joint adjustment tool. You can purchase this by searching for Part#
DS34-W
in our
eBay Store
.
Angle Finder:
Magnetic angle finder used for setting pinion angle. You can purchase this by searching for Part#
HF-34214
in our
eBay Store
.
See our
eBay Store
for more 1978-1987 GM G-Body products!
Color Choice
Color Choice
Payments & Taxes
Shipping
About Us
Returns Policy
Color Choice
Items with a Color Choice:
If an item has a color choice shown in the listing description you must tell us your color choice as soon as the order is placed.
Please note your color choice in the "Comments" field of the eBay checkout and/or in the "Notes" field when sending your PayPal payment, or simply
send us a message through eBay
right after placing the order.
Orders that are placed without immediately noting your color choice will be shipped the color that is pictured
.
Payments & Taxes
Payments & Taxes
Payment Types:
We only accept payments through PayPal. You can use your Visa, MasterCard, Discover, or American Express credit or debit card through PayPal when checking out, a PayPal account is not required.
Sales Tax:
All Pennsylvania sales will be charged 6% sales tax.
Shipping
Shipping
Flat Rate Ground Shipping Charges:
We offer LOW Flat Rate Ground Shipping that is based on your order total. These charges are clearly listed on all of our listings. You are only charged the shipping charge of the first item you add to your cart. So if you add additional items to your order there are no additional shipping charges! If your order totals 9.00 or more the shipping is FREE!
Our Flat Rate Ground Shipping Rates:
{{detail_product_description}}.00 - .00 = .95 .01 - 0.00 = .95 0.01 - 0.00 = .95 0.01 - 8.99 = .95
9.00 or more = FREE GROUND SHIPPING!
Shipping Carrier:
Items will ship via USPS, FedEx Ground, and/or UPS Ground at our discretion. The tracking number(s) will be emailed to you upon shipment.
Multiple Items:
Be sure to click "Add To Cart" on all of the items you wish to order before going through checkout. eBay's shopping cart checkout system will combine multiple items in to one single order and automatically re-calculate the flat rate shipping charge based on your order total.
HI, AK, APO/FPO & International:
Due to the limitations of eBay's shipping system we can only accept orders from the Continental United States (48 States) or locations that are eligible for the
eBay Global Shipping program
.
About Us
About Us
Since 1999 we have committed our efforts to the design and manufacture of suspension, chassis, and drivetrain components that deliver the highest level of quality, performance, and value. Our team of highly skilled craftsmen take pride in their work! If you have any questions about our products, please feel free to
send us a message through eBay
.
Returns Policy
Returns Policy
We cannot accept returns on parts that have been used or installed. Prior authorization through the
eBay return request system
must be given before a return can be made. There are no refunds on shipping charges. Buyer pays for return shipping.
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