ACT 09-13 BMW 135i / 09-13 335i XACT Flywheel ProMass NO-DISCOUNT BORLA(r)'S Polyphonic Harmonizer Technology utilizes

BORLA(r)'S Polyphonic Harmonizer Technology utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean

It is a huge upgrade for intake noise and provides a nice throaty intake tone

Mishimoto M20 x -10AN Black Banjo Fitting w/ Bolt

and can be used on EFI or carbureted applications

lancia coilovers

ACT 09-13 BMW 135i / 09-13 335i XACT Flywheel ProMass NO-DISCOUNT BORLA(r)'S Polyphonic Harmonizer Technology utilizesManufacturer Part # : 601030 Associated Comments Noticeably improved engine response and acceleration, OE to mild gear rattle; Heat treated forging for strength and toughness, induction hardened ring gears for maximum life; One piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears; Recommended for street and race use; Forged, CNC machined and