ACT BM9-XTSS Xtreme Perf Street Sprung Clutch Kit for 2001-2006 BMW M3 E46 3.2L

Vehicle Fitment

• 2001-2006 BMW M3 Base (E46) - 3.2L DOHC I6 Naturally Aspirated (3246cc, S54B32)

Fitment Notes

• Must be used with an ACT flywheel for proper sprung hub disc clearance - flywheel is NOT included; sold separately (ACT XACT Streetlite #601010 or XACT Prolite #601015 recommended)
• Manual transmission applications only (6-speed SMG models not compatible)
• Sprung hub disc requires ACT flywheel due to increased disc depth - will NOT clear OEM dual-mass flywheel
• Expect a 50-80% increase in pedal effort over stock due to Xtreme pressure plate clamping load
• Street disc requires a 300-500 mile break-in period with mild engagement before spirited or track use
• Do not overheat during break-in - may cause friction surface glazing or hot spots
• Pressure plate mounting bolts included: M8-1.25 x 20mm

Features

• ACT Xtreme pressure plate - maximum-clamp diaphragm design delivers the highest torque capacity in the ACT lineup with reduced deflection and extended clutch life
• Four-stage heat-treated diaphragm springs - provide consistent clamping force and long-term durability under extreme street and track conditions
• Precision cover stampings - ensure structural rigidity and consistent pressure plate geometry under thermal and mechanical load
• ACT Performance Street Sprung disc - premium organic friction material with high copper content for superior heat transfer and reduced fade
• Steel-backed disc lining - increases burst strength and durability over standard organic-only constructions
• Reduced marcel (disc wave springs) - allows faster clutch engagement to complement the Xtreme pressure plate's aggressive clamping load
• Sprung hub design - properly damps torsional vibrations for smooth street engagement and minimal drivetrain noise
• Computer spin balanced to within .25 oz-in - tighter than OEM tolerance of .50 oz-in for smooth high-RPM operation
• 100% clamp load tested - every pressure plate is individually verified before shipment
• 79% torque capacity over OEM - rated at 549 ft-lbs. at the crank

Specifications

• Part Number: BM9-XTSS
• Pressure Plate Type: Xtreme (XT)
• Clutch Disc Type: Performance Street Sprung
• Disc Material: Organic
• Clutch Disc Diameter: 9.4 in. (240mm)
• Input Shaft Diameter: 1.375 in.
• Torque Capacity: 549 ft-lbs. (at crank)
• Torque Capacity Over OE: 79%
• Assembly Weight: 13.8 lbs.
• Balance: Computer spin balanced to within .25 oz-in
• Pressure Plate Bolts: M8-1.25 x 20mm (included)
• Warranty: 12 months

Included Components

• 1x ACT Xtreme Clutch Pressure Plate (B015X)
• 1x ACT Performance Street Sprung Clutch Disc (3000815)
• 1x ACT Clutch Release Bearing (RB1401)
• 1x ACT Clutch Pilot Bearing (PB1002)
• 1x ACT Clutch Alignment Tool (AT25)
• Pressure Plate Mounting Bolts (M8-1.25 x 20mm)

Product Description

The ACT BM9-XTSS is an Xtreme Performance Street Sprung clutch kit built specifically for the 2001-2006 BMW M3 E46 equipped with the S54B32 3.2L naturally aspirated inline-six and 6-speed manual transmission. Pairing ACT's highest-clamp Xtreme pressure plate with an organic Performance Street Sprung disc, this kit delivers 79% more torque capacity over OEM at 549 ft-lbs. at the crank - providing a significant margin of holding power for modified engines, track-day use, and aggressive street driving without the harsh engagement characteristics of a full race setup.

The Xtreme pressure plate's four-stage heat-treated diaphragm springs produce the highest clamping load in ACT's street-oriented lineup, with a corresponding 50-80% increase in pedal effort over stock. The Performance Street Sprung disc balances that aggressive clamping force with a torsional damper spring hub for smooth engagement, quiet operation, and reduced drivetrain shock - making the BM9-XTSS more livable in daily and spirited street driving than a full race disc alternative. Premium organic friction material with high copper content and steel-backed lining ensures excellent heat tolerance and long service life. Important: This kit requires an ACT flywheel (sold separately) for proper disc-to-flywheel clearance and is not compatible with the OEM dual-mass flywheel. A 300-500 mile street break-in is required before track or aggressive use.