ACT 2006 BMW 325i Base HD/Perf Street Sprung Clutch Kit
ACT BM15-HDSS is a Heavy Duty street clutch for the BMW N52 inline-six with the six-speed manual, listed here for the 2006 E90 325i. It suits owners replacing a worn clutch who want more holding power than stock, cars with intake, exhaust or tune upgrades that have started to slip in the upper gears, and drivers who want a firmer, quicker-engaging clutch without the grab of a race disc.
The kit pairs ACT's B015 Heavy Duty pressure plate with the 3000818 Performance Street sprung disc. The disc uses ACT's organic, high-copper facing on a steel backing, with a sprung hub to absorb driveline shock, so it engages the way a street car should while holding more torque. ACT rates the assembly at 465 ft-lb at the crank, 52 percent over the factory clutch, on a 9.4 in (240 mm) disc with a 1.125 in input shaft.
The key detail on this kit is the flywheel. ACT states that BM15-HDSS must be used with an ACT flywheel, which is not included, and lists the 601170 XACT Streetlite as the matching part. Plan on buying the flywheel with the clutch; this kit is not meant to bolt to the factory flywheel. ACT also notes that the M8-1.25 x 20 mm pressure plate bolts are included.
In the box: B015 pressure plate, 3000818 disc, RB014 release bearing and AT103 alignment tool. ACT describes the feel as light to moderate pedal effort, smooth positive engagement and OE to mild gear rattle.
Rule out the hydraulic side before pulling the gearbox: a spongy or sinking pedal on these cars is commonly a leaking slave cylinder or air in the line. To check for slip, cruise in fifth at around 2,500 rpm and floor it; if the tach rises and road speed does not follow, the clutch is slipping. Our guide to diagnosing slipping walks through it, and shift flare vs. slip explains what each feels like. If the car also has a rattle at idle that goes away with the pedal pressed, look closely at the flywheel when the gearbox is out.
Our listing is titled for the 2006 BMW 325i. ACT's chart for BM15-HDSS covers N51/N52 3.0L six-speed manual cars: the 2006 325i/xi and 330i/xi (E90/E91), 2007-2013 328i/xi/xDrive (E90-E93), 2008-2013 128i, 2006-2007 525i/xi and 530i/xi, 2008-2010 528i/xi, 2007-2010 X3 3.0i/3.0si, 2006-2008 Z4 3.0i/3.0si and 2009-2011 Z4 sDrive30i. It is for manual-transmission cars only. The 2006 325i used the 3.0L N52 in the E90, unlike the 2.5L M54 E46 325i before it, so confirm the body and engine before ordering, or send us your year and VIN. More clutch and driveline parts are listed in our rebuild kits and clutch section.
| Brand | ACT |
| Part number | BM15-HDSS |
| Fits | ACT 2006 BMW 325i Base HD/Perf Street Sprung Clutch Kit |
| Vehicle fitment | BMW 325I (2006) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. The E46 325i used a 2.5L M54. BM15-HDSS is for N51/N52 3.0L six-speed cars, starting with the 2006 E90 325i and 330i.
No. ACT states this kit must be used with an ACT flywheel, which is sold separately. ACT lists the 601170 XACT Streetlite for it.
ACT rates BM15-HDSS at 465 ft-lb at the crank, 52 percent above the factory clutch.
It fits six-speed manual cars only. ACT's chart includes xi and xDrive manual models such as the 325xi, 330xi, 328xi and 328i xDrive.
No. The kit includes the pressure plate, disc, release bearing, alignment tool and pressure plate bolts. Check the pilot bearing and replace it if needed.
