Helix is proud to announce the next evolution of our rear-adjustable control
arms. We have always been proud of our rear control arms--the strongest and
lightest on the market--which have proven to be a benchmark design for
others to copy. We use the best heim joint spherical bearings available
anywhere to produce a better-than-stock suspension piece.

The only reservation that we've had in recommending them for daily driven cars
has been that the bearings are made of hardened steel, which is not weather proof.
This means that they require regular maintenance. We now offer improved control
arms with boot sealed spherical bearings for daily driven cars. No longer must your
MINI compromise between strength, weight and long-term weather durability.
We also now powder coat the T6061 Aluminum rods with a durable crinkle finish black.

The retail price for a pair of lower control arms is $229 and are available in sets of 2 or 4.
http://www.helix13.com/mini/products/suspension-chasis