Adapter for BMW 1/3 (E87/F20/E90/F30)

Front brake caliper adapters, dedicated to BMW 1/3 (E87/F20/E90/F30)

The adapters enable the installation of a 4-piston caliper [AR159/Brera + Megane 3 RS] BIG BREMBO on a 348x30mm disc [BMW 3 E90]

• The 348x30mm disc [BMW 3 E90] combined with the 4-piston caliper [AR159/Brera + Megane 3 RS] BIG BREMBO allows you to obtain high and repeatable braking power.
• The set consists of brake caliper adapters and mounting screws.
• Vehicle axle: front

Discs 348x30mm [BMW 3 E90] OE codes:

• 34116770729
• 34116855000

4-piston calipers [AR159/Brera + Megane 3 RS] BIG BREMBO OE codes:

• 77363536
• 77364507
• 410113693R
• 410010873R
• 410110915R
• 410013472R

The adapters are made of high-quality duralumin / magnesium aluminum, which ensures low dead weight (including low unsprung mass), combined with high mechanical strength comparable to steel. The adapters are anodized for anti-corrosion protection. Depending on the rim model used, it may be necessary to use spacer rings - this depends on the rim's ET parameter.

Brembo 4-piston brake caliper from Alfa Romeo 159/Brera or Renault Megane 3 RS:

The Brembo brake caliper has an asymmetric arrangement of the pistons in the caliper. For optimal use of the caliper and to avoid abnormal wear of the brake pads, modifications are recommended before mounting the brake calipers. The modification involves replacing the tubes connecting the brake caliper chambers with the breather vents.

Brake lines:

To take full advantage of the modification consisting in replacing the brake calipers with more effective ones, it is also worth taking care of the brake lines and replacing them with steel-braided lines.

Brembo 4-piston calipers have a standard M10x1 connection thread. When replacing brake lines, a banjo-type clamp connection terminal (eyelet for a through bolt) is recommended.

If you change to a larger brake disc diameter, it is worth ordering longer brake lines. Their length should be adequate to the difference in the radius of the brake disc. For example, if the old brake disc has a diameter of 300mm, its radius is 150mm. The new brake disc has a diameter of 330mm, so its radius is 165mm. In this way, we obtain a difference in the radius of the brake disc of 15 mm. New brake lines should be longer by this minimum value.

Brake pads:

When installing brake discs with a thickness of 30 mm, it is recommended to use brake pads with a height of 15-15.4 mm (standard pads are 16 mm high).