Supertech retainers are CNC machined with strict tolerances and high quality material to give the best performance and durability.
Tein S.Tech Lowering Springs BMW M3 E46 Incl Cabrio 00-05
£270.00
Supertech 6mm Triple groove keeper - 7 Degrees BMW S54
£1.73
Supertech Titanium retainer BMW S54 M3 SPR-2521 2 – 6.0 mm valve stems
£17.31
