BMW Z3M Front BBK Adapter Brackets

BMW Z3M Front BBK Adapter Brackets

Availability: In Stock

CNC Machined Brackets are designed to fit a Porsche 996 Brembo front caliper to the Z3M front spindle.  Two rotors options are available for this brake kit.  The first option is the standard E46 M3 325x28mm front rotor.  The standard E46 M3 rotor with fit with 17 inch wheels.  Utilizing standard E46 M3 rotors requires 12mm to be machined from the mounting boss of the caliper.  We offer this service for $95 plus return shipping.
The other rotor option is for 18 inch wheels only, but requires no modification to the calipers.  The E46 M3 CSL 345mm floating rotor is a bolt on setup for this bracket an a 996 caliper.

Note: You may use the standard rear rotors or two piece rear floating motorsport rotors (they are the same dimensions).

Brackets are made from 7075-T6 Aluminum and MIL spec black anodized for corrosion resistance.  The studs are made from 17-4 PH pre-hardened stainless steel.  Calipers are secured to the bracket/stud combo with supplied aircraft jet nuts and washers.

Calipers used for this conversion are Front Calipers from the 1999-2004 Porsche 996 (non-turbo), the Boxster S or the Cayman S.  All these calipers are made from the same Brembo casting.

The Porsche caliper part numbers for this conversion are:
996.351.425 (driver side)
996.351.426 (passenger side)

Calipers will vary in color between Porsche model and options, but the castings will be the same as will the piston sizes.  A pair of calipers can regularly be found between $350 and $425.  If you are having trouble finding calipers for that price, please contact us.  We may just have a pair of calipers to sell within that price range.
*For off-road use only.