SPEC®

SPEC® SB534-2 Stage 4 Clutch Kit

  • Sale
  • Regular price $723.99




Compatible:

2011 BMW 1 Series M
2008-2012 BMW 135i
2009-2011 BMW 335d
2007-2012 BMW 335i
2011-2013 BMW 335is
2007-2008 BMW 335xi
2008-2013 BMW 535i
2008 BMW 535xi
2009-2016 BMW Z4


Features:

This unit is a solid hub version of the stage 3. The hub is solid 8-rivet and the assembly is heat treated for strength and durability. It is available in a 3, 4 or 6 puck configuration. Use the 3 puck for the lightest option or the 6 puck for the smoothest engagement. The 4 puck is a good compromise for both. Street drivable in 6 puck configuration, but not street friendly due to the rigid hub.  These kits feature a non-SAC mechanism pressure plate, which , deviating from the original design, provides a lighter rotating assembly, higher rpm capability and greater clamp load levels. Required for the install is a billet rebuildable flywheel that features a lightweight, low MOI design and infinite rebuildability. The billet aluminum flywheel weighs 14lbs, and billet steel 22 lbs.


Install Notes:

Unless using a new flywheel provided by SPEC, existing unit must be resurfaced prior to installation of the clutch product to ensure integrity of friction surface. Owner must also break in the new high performance clutch for a minimum of 450 miles, primarily city and/or stop-and-go driving, before full throttle engagement, drag launching or speed shifting. * FAILURE TO EXECUTE EACH OF THE ABOVE WILL HINDER CLUTCH PERFORMANCE AND VOID ALL WARRANTY!!! Unless otherwise instructed by written notice from SPEC, follow manufacturer’s instructions when installing clutch and flywheel products. SPEC recommends that all bolts be inspected before re-installation, and any bolts that have been removed and re-torqued multiple times replaced. SPEC will not warrant any component failure due to install error.


Warranty: