Porsche 986 Brake Caliper Mounting Kit for Honda 262mm/10.3″ Knuckles

This kit allows you to mount the OEM Brembo four-piston caliper from the first-generation (986) Porsche Boxster on a variety of golden era Hondas. The caliper kit provides the correct brake balance with the OE rear disc brakes and proportioning valve, with no need to modify the hydraulic system. It works perfectly with our booster delete with solid and predictable pedal feel and fits most 15-inch wheels. Combine it with our air guide kits for a lightweight setup that will resist fade, even on powerful K-swapped cars.

Kit includes:

• Adapter brackets to mount Porsche caliper to the factory caliper mounts on the knuckle, no modifications required
• Adapter to suit the OEM 10mm banjo fitting on the brake hose with new copper sealing washers
• M12 10.9 Hardware to mount the adaptor to the knuckle
• M12 10.9 Hardware to mount the caliper to the adaptor

Not included and required:

• • 1 pair 986 Porsche Boxster base model calipers with pads. Casting/part numbers 986.351.422 and 986.351.421
  • 1 pair R53 Mini Cooper S JCW brake discs, 2006MY. 294mm diameter.
    Centric part number 125.34092
    DBA part number DBA2524
    RDA part number RDA7974

Wheel fitment information

The following wheels have been confirmed to fit with the brake kit. Whilst we’ve made every effort to ensure the below list is correct, please be aware that variance in fitments may occur, so please check the clearance with your own wheel before driving. Thank you to our valued customers for contributing to this list:

949Racing 6UL 15×8″+36 – 5mm spacer required
949Racing 6UL 15×9″ +36 – 8mm spacer required for knuckle clearance
949Racing 6UL 15×10″ +25 – 8mm spacer required for knuckle clearance, not necessary for caliper clearance
Volk Racing TE37 15×7 +35 – 2mm spacer required
Enkei RPF1 15×8″+28 – 5mm spacer required, caliper may need to be clearanced slightly to avoid interference/debris between barrel of wheel
Kosei K1 15×7″ +25 – No spacer

Wheel fitment template PDF

Important notes:

• The calipers used must be the front calipers from the base model 986 Boxster. The piston sizing in the rear calipers will not work correctly though they are nearly indistinguishable externally
• The kit retains your existing flexible brake hoses. In some situations OEM-type rubber brake hoses will not have enough slack to connect to the new location of the caliper inlet, which is slightly different to the OE sliding caliper.  Aftermarket braided hoses typically present no issue as they allow more articulation in their mounting brackets.

Fitment information:

This kit is designed for the large hub/bearing type 4×100 suspension knuckle as fitted to many models from 1988 to 2000. The correct knuckle has 262mm ventilated discs which are 19mm thick as OEM fitment. This kit will not work on knuckles originally fitted with 242mm/9.5″ brakes; we have a separate kit for that application found here.