Boxster Model Clutches, Flywheels

	STAGE 1 High clamp pressure plate, steel-backed woven organic disk, bearings and tool.
	STAGE 2 High clamp pressure plate, segmented chatter-free Kevlar disc, bearings and tool.
	STAGE 3 High-clamp pressure plate, 3-piece disc with carbon or ceramic material, bearings and a tool. ULTIMATE STREET/STRIP CLUTCH! Sharp but smooth engagement with light pedal.
	STAGE 4 High-clamp pressure plate, 2-piece rigid disc, bearings and a tool. Available in 3 or 6 wing design for serious road racing and drag racing.
	STAGE 5 High-clamp load pressure plate, iron disc, bearings and a tool.
	FLYWHEELS 928 Developments billet steel and billet aluminum flywheels are recommended as a replacement for OEM cast steel flywheels in street high performance and racing applications. Your engine, gearing and vehicle weight are factors in determining which flywheel would be best suited for your application. Please contact us for recommendations. Billet Steel 928 Developments billet steel flywheels are machined from the highest quality materials and exceed SFI safety standards for high-RPM racing applications. They are precision-ground to mate perfectly to the crank with minimum runout and provide a true and reliable surface to mate with the variety of friction materials we offer. They are recommended for heavy vehicles in a drag racing application and for mildly modified street/strip cars. Billet Aluminum 928 Developments billet aluminum flywheels are also CNC-machined and exceed SFI standards for high-stress racing applications. These units are recommended for highly modified street or racing vehicles, and for mildly modified street cars that can benefit from reduced rotating mass without the loss of daily drivability. The body of the flywheel is made of tempered aluminums, either 6061 T6 or 2024 T3, for ultimate strength and lightest possible weight. The 1/4 inch thick friction plate is a 1050 high carbon alloy, for incredible durability with any friction disc material, even iron. The plates are secured to the body by aerospace fasteners or stainless steel rivets, depending on the application. These fasteners were chosen because of their exceptional strength and corrosion resistance. The ring gears are pressed on and secured with grade 10 fasteners. The gear is also heat-treated for longevity. They are effective, durable and almost too easy to install!
	MULTI-DISK AND LEVEL STYLE CLUTCHES Please contact us for information about custom adjustable pressure plate and multi-disc systems.

Application			Performance Kits					Flywheels
Year Span	Engine	Includes	Stage 1	Stage 2	Stage 3	Stage 4	Stage 5	Aluminum
1997-1999	2.5L		ND-881	ND-882	ND-883	ND-884	ND-885	ND-88A
			$439	$539	$599	$599	$699	$540
2000-2003	3.2L		ND-901	ND-902	ND-903	ND-904	ND-905
			$599	$699	$799	$799	$899