The A & A Manufacturing stock trailing arm mounting kit (part No. KT-1B) makes removing a GM rear end from a GM Metric chassis much easier. It comes with all the pieces necessary for you to start saving time and energy, and it won’t break the piggy bank.
The company manufactures the kit’s lower trailing arm mounts (part No. LZ-13-B) from 3/16″-thick steel. They are angled to fit GM Metric chassis and have four holes for racers to adjust their trailing arm position.
“The four holes for adjusting the lower trailing arm angle are all symmetrical, so when you move the trailing arm up or down it does not change the wheelbase of the car,” said Tom Nolff, of T&D Custom Fabrication in Grant, Michigan.
The upper trailing arm mounts (part No. AA-175-B) are constructed from stout 5/8″-thick steel. Trailing arm bushings come included (part No. AA-175-C).
Shock brackets (part No. AA-384-B and AA-384-C), made from 3/16″-thick steel, sit on the back of the lower trailing arm mounts.
“This kit is affordable for most street stock racers, and it is both easy-to-install and easy-to-use,” Nolff said. “It takes less than two hours for an experienced welder to install the kit.”
The stock trailing arm mounting kit (part No. KT-1B) sells for $96.00.
A & A Manufacturing makes a similar trailing arm mounting kit for racers using Ford 9″ rear ends in GM Metric chassis (part No. KT-1A). $64.00.
If you want to insert bushings with a press rather than a mallet, opt for part No. AA-175-D. It comes with a locking bolt to tighten the bushing. $15.75.
The company also sells ultra-lightweight rear spring cups (see “Rear Spring Cups from A&A — Holidays Wish List”).
Part No. AA-621-A fits 3″ axle tubes — $14.95.
Part No. AA-621-B fits 2-5/8″ ones —$14.95.
Part No. AA-621-C is an offset spring cup, which sits 2-1/2″ off center of a 3″ axle tube — $14.95.
Part No. AA-621-D is a clamp-on spring cup, fitting 3″ tubing — $24.95.
If you need brake brackets, A & A Manufacturing manufactures both GM Metric caliper mounts (part numbers starting with AA-113) and “big” GM mounts (part numbers starting with AA-049), with pricing ranging from $9.82 to $15.84 per bracket.
For more than 50 years, A & A Manufacturing has worked closely with racers and chassis fabricators. The company offers a wide array of quality chassis components at reasonable prices. They constantly introduce new products to their lineup. Their offerings include rod ends, spacers, bushings, clamps, brackets, and mounting hardware for a number of items, from shocks, to brakes, to fuel cells. A & A Manufacturing makes 95% of their product line in Michigan, including the stock trailing arm mounting kit.
A & A Manufacturing
Spring Lake, Michigan
Outside Groove Note of Transparency: A&A Manufacturing paid for the production of this article. The content was subject to approval of A & A Manufacturing.
This year marks the Outside Groove Director of Photography’s 51st year of covering auto racing. Adaskaveg got his start working for track photographer Lloyd Burnham at Connecticut’s Stafford Motor Speedway in 1970. Since then, he’s been a columnist, writer, and photographer, in racing and in mainstream media, for several outlets, including the Journal Inquirer, Boston Herald, Stock Car Racing, and Speedway Illustrated. Among Adaskaveg’s many awards are the 1992 Eastern Motorsport Press Association (EMPA) Ace Lane Photographer of the Year and the 2019 National Motorsports Press Association (NMPA) George Cunningham Writer of the Year.