Rennsport Factory



Front Big Brake Conversion with 4/6 Pot Road or Competition AP Racing Calipers and 2 Piece Disc Kit


Big brake kit by Rennsport Factory and AP Racing

We’ve developed this big brake conversion kit for many applications, our adapter brackets and disc bells have been CNC machined then hard anodised all in the UK. We use AP racing rotors which are available bolted or floating, AP Racing disc to bell bolts and the competition series uses the Pro 5000 R range of calipers which are a forged 2 piece aluminium caliper with superior rigidity and the larger 280-330mm units come with stainless steel pistons and wear plates. On Mercedes applications this will loose the rear drum and shoe setup and will need replacing with a hydraulic handbrake.

The kit includes a pair of built 2 piece discs with aluminium bells, a pair of calipers, adapters, brake hoses and a set of Ferodo DS2500 pads for the road setup or DS3000 pads for the competition range

The following dimensions are available

  • 280 x 22mm 4 pot
  • 280 x 25mm 4 pot
  • 315 x 28mm 4 pot
  • 330 x 28mm 4 pot
  • 356 x 28mm 4 pot

Other dimensions are available on request.


Road, Race


Bolted discs, Floating Discs

Disc size

280 x 22mm 4 pot, 280 x 25mm 4 pot, 315 x 28mm 4 pot, 330 x 28mm 4 pot, 356 x 28mm 4 pot

Make Model Year
Make Model Year
Mercedes C117 CLA Class 13-
Mercedes C207/A207 CLK Class 08-14
Mercedes C208/A208 CLK Class 96-02
Mercedes C209/A209 CLK Class 03-09
Mercedes R107 SL Class 71-89
Mercedes R129 SL Class 89-01
Mercedes R170 SLK Class 96-04
Mercedes R171 SLK Class 04-11
Mercedes R172 SLK Class 11-
Mercedes R230 SL Class 01-11
Mercedes R231 SL Class 12-
Mercedes W116 S Class 72-80
Mercedes W124/S124/C124/A124 E Class 83-95
Mercedes W126/C126 S Class 80-91
Mercedes W140/C140 S Class 91-99
Mercedes W168 A Class 97-04
Mercedes W169 A Class 05-11
Mercedes W176 A Class 12-
Mercedes W201 190e
Mercedes W202 C Class 94-00
Mercedes W203/S203 C Class 00-07
Mercedes W204/S204 C Class 08-13
Mercedes W205/S205 C Class 13-17
Mercedes W210/S210 E Class 95-03
Mercedes W211/S211 E Class 03-09
Mercedes W212/S212 E Class 10-16
Mercedes W213/S213 E Class 16-
Mercedes W218 CLS Class 04-10
Mercedes W219 CLS Class 04-10
Mercedes W220 S Class 99-05
Mercedes W221 S Class 05-13
Mercedes W222 S Class 13-
Mercedes W245 B Class 05-11
Mercedes W246 B Class 12-
Mercedes X156 GLA Class 14-
Mercedes X166 GL Class 12-
Mercedes X253 GLC Class 15-
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