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

ZM2-XTSS kit features an Xtreme pressure plate for the most demanding driver

Installation of an adjustable track bar or drop down bracket is required to assure centering of the front axle

8L (4G93) Stage 4 Clutch Kit (1MD)

Manufacturer Part # : 60322

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