To progress. The Beta Pack takes the Omega Pack and builds on it.
1: Coilover suspension
Coilovers lower the car and are stiffer than stock. They provide better damping and more grip.
2: Solid front control arm bushings
The stock control arm bushings filter the road, but their softness hurts front-end precision. Solid bushings restore the car's precision, whereas polyurethane eventually cracks under the stresses of track use.
3: Adjustable camber arms
They replace stock parts of questionable stiffness that flex under load, and allow the rear camber to be set for the track.
4: Solid rear subframe mounts
BMW adopted them on the M3 E92 GTS and the M5 F10 Competition. They prevent movement between chassis and subframe and help stiffen the rear axle.
5: Rear trailing arm spherical bearings
With age, the stock bushings crack and let the trailing arms move during spirited driving, right down to braking. With spherical bearings, the geometry stays stable.
6: Adjustable anti-roll bar end links
They remove any residual preload in the anti-roll bar after corner weighting.