MMR Big Brake Kit Forged Monoblock for BMW E46 M3 1997-2005 - MMR31-0301F-370 - The MMR Performance 6-piston front brake upgrade for the E46 BMW M3 uses a forged monoblock, precision machined brake caliper which has been specifically engineered to deliver breath-taking stopping performance even when used in extreme road, or race conditions.  These calipers, which are available in a Graphite grey or Race red finish, are then mated with a set of our high-performance 370mm fully-floating two-piece disc assemblies, which utilise a directional curved vein to aid cooling. Finished with our proprietary grooved disc design, which not only offers a visual boost, it also helps to ensure a glaze-free pad surface, giving you optimum braking performance even under extreme temperatures and usage. WHAT'S IN THE BOX? T-6061 6-piston forged monoblock calipers - for ultimate strength and rigidity FC-25 Carbon steel two-piece 370mm fully-floating discs MMR Performance fast-road pads (uses common AP6 pad profile) Billet steel caliper brackets MMR Performance braided front brake lines All required fitting hardware Application Series Model Code Year Variant Engine Codes 3 Series E46 1997-2005 M3 S54