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Technical Information (MGB 4B)

Complete Rear Suspension Package (Tube Axles)

Last Modified - 03/21/03

British Automotive would like to offer the MGB owner a conveniently priced complete rear suspension package.

This suspension package is applicable for all MGB's fitted with tube axles only.

Weighing in at approximately 50lbs, as compared with the OEM rear suspension weight of approximately 75lbs, you get an entirely updated rear suspension system, including all necessary mounting hardware.

This complete rear suspension package consists of the following:

Composite Spring Set
KYB Telescopic Shock Absorber Kit
KYB Supplemental Strengthener Kit
Traction Control Arm Kit
Panhard Rod Kit
" U" Bolt Kit (8")
Bump Stop Pedestals (2)
" U" Bolt Guide Plates (4)
Axle Check Straps (2)

 

P0002529 P0002535 P0002337

P0002529                      P0002535                      P0002337

All components are powder coated or zinc plated for corrosion protection

Please indicate whether chrome or rubber bumper model, along with either disc or wire wheel tube axle.

MGB owners wishing to install just the composite springs be advised that as of the above date, all composite spring sets will be sold inclusive with British Automotive's traction control arm kit. This item can be viewed by accessing technical articles MGB27.

These new composite spring sets have now been updated around a totally redesigned rear-mounting eye. The rear shackle eye mounting is now identical to that of the front. In doing so, the MGB & MGA owner will now have more flexibility in the installation process, as well as the opportunity to replace these new insert bushings as necessary.
Our intention was to design a new rear-mounting eye that could be designed with the OEM shackle assembly in mind. Unfortunately, the replacement manufacture of this product, from several sources, was totally unacceptable.

The only solution to this problem was simply to incorporate British Automotive's adjustable rear spring shackle assembly into the design.

In the following image, the composite spring set mounting hardware is shown in its entirety. Obviously, the actual spring blades are omitted for clarity.

I believe that the majority of MGB & MGA owners will immediately recognize the quality and value that has gone into this kit.

COMPOSITE SPRING ASSEMBLY HARDWARE

P0002545


P0002545

Viewing the image left to right as follows:

British Automotive's adjustable rear ride height shackle pin kit.

Redesigned rear eye mounting assembly.

Composite spring to rear axle mounting hardware.

Replacement front and rear eye insert bushings set (8). (Lower center)

Front eye mounting assembly.
-------------------------------------------------------------------------

In the past customers have complained about the difficulty in custom hand fitting the upper Delrin shackle bushings which, were provided within the composite spring hardware kit. Thanks to this customer feedback, we will now be providing the 95 durometer polyurethane bushings only.

Customers wishing to install these Delrin bushings can order a set (4) separately under PART # REAR/BUSH List price $19.80.

This will be a limited production run. Price and availability will be posted on the web site ASAP.

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Model Year

Kerbside

Normal

1974 1/2 (Roadster)

2394 lbs.

2694 lbs.

1200 lbs./1194 lbs.

1326 lbs./1368 lbs.

50.1%-49.9%

49.2%-50.8%

Model Year

Kerbside

Normal

1974 1/2 (GT)

2426 lbs.

2726 lbs.

1181 lbs/1245 lbs.

1297 lbs./1429 lbs.

48.7%-51.3%

47.6%-52.4%

Model Year

Kerbside

Normal

1975-76 (Roadster)

2290 lbs.

2590 lbs.

1157 lbs/1133 lbs.

1266 lbs./1324 lbs.

50.5%-49.5%

48.9%-51.5%

Model Year

Kerbside

Normal

1977-80 (Roadster)

2416 lbs.

2716 lbs.

1207 lbs./1209 lbs.

1303 lbs./1413 lbs.

50%-50%

48%-52%

Model Year

Kerbside

Normal

Factory MGBGTV8

2442 lbs.

2742 lbs.

(Chrome Bumper)

1207 lbs./1235 lbs.

1317 lbs./1425 lbs.

49.4%-50.6%

48%-52%

For additional information select from one of the following categories:

  1. An Introduction to Composite Springs
  2. MGB Vehicle Weights
  3. MGB Vehicle Lean Problems
  4. MGB Anticipated Ride Heights
  5. Marketing Update
  6. Installation Instructions (General)
  7. Rear Ride Heights Adjustable Shackle Pin Kit
  8. Rear Telescopic Shock Absorber Choices
  9. Ordering Information