1971 Porsche 911 Clutch Systems

LuK dual-mass flywheels absorb engine vibrations before they are transmitted to the driveline where they can create gear rattle. These units feature a built-in damper designed to isolate engine torque spikes and prevent transmission damage. By design, dual-mass flywheels cannot be resurfaced. This all makes the LuK dual mass flywheel the ideal solution. With one drawback: the higher the mass reactance of the vibrating masses, the more excessive the resonance increase and associated torque peaks. With the dual mass flywheel, this would be easily perceived when starting and stopping the engine; much more easily than with a conventional clutch system. Additionally: the smaller flymass of the engine has less of a stabilizing effect on the speed fluctuation of the engine. Thanks to decades of experience in clutch building, the LuK specialists were able to find an excellent solution to this problem. An additional damping device effectively prevents resonance overload. In normal operation, however, this additional damping device has no function and the torsional vibrations of the engine are filtered out by spring dampers. Friction and spring rate – the correct ratio is important. For optimal vibration isolation and soft resonance passage when starting and stopping the engine, the ratio between friction and spring rate must be optimal. The length of the springs is a key factor: The softer a spring, the more efficiently vibrations are isolated. The extra-long springs of the latest generation of dual mass flywheels significantly reduce the spring rate compared to a first generation dual mass flywheel. In routine driving operations, excessive resonance increases are kept almost completely away from the gearbox.

Product Features:

• Top driving comfort
• Absorbs vibrations
• Prevents noise
• Enables comfortable, low-revs driving
• Saves fuel
• Relieves crankshaft and gearbox

Sebro conventional flywheels are dynamically balanced to reduce vibration and improve clutch performance. All new never remanufactured – every flywheel component is engineered and built to original-equipment specifications, including the ring gear and dowel pins.

Product Features:

• OE quality and direct fit application
• Made from high quality steel
• Designed to reduce clutch chatter and vibration
• Dynamically balanced

LuK: Don’t gamble – stay with the original DMF! The DMF prevents damages solid flywheels may cause. The Dual Mass Flywheel (DMF) is individually fine-tuned for every type of car. The risks of using solid flywheels are numerous – from increased wear of engine mounts through gearbox failure to damaged crankshafts.

Sebro conventional flywheels are dynamically balanced to reduce vibration and improve clutch performance. All new never remanufactured – every flywheel component is engineered and built to original-equipment specifications, including the ring gear and dowel pins.

Product Features:

• OE quality and direct fit application
• Made from high quality steel
• Designed to reduce clutch chatter and vibration
• Dynamically balanced

The Original Equipment Flywheel Bolt is manufactured in accordance to strict OEM specifications for performance and durability. The Original Equipment flywheel bolt is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE Quality and direct fit application
• Original Equipment Supplier

The Original Equipment Flywheel Bolt is manufactured in accordance to strict OEM specifications for performance and durability. The Original Equipment flywheel bolt is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE Quality and direct fit application
• Original Equipment Supplier

The Original Equipment Flywheel Bolt is manufactured in accordance to strict OEM specifications for performance and durability. The Original Equipment flywheel bolt is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE Quality and direct fit application
• Original Equipment Supplier

The Original Equipment Flywheel Bolt is manufactured in accordance to strict OEM specifications for performance and durability. The Original Equipment flywheel bolt is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE Quality and direct fit application
• Original Equipment Supplier

Clutch Clevis Pin

The Original Equipment Clutch Clevis Pin is an ideal high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:

• Premium Original Equipment replacement
• Provides performance and dependability
• Manufactured to meet OE specifications

The Sachs Clutch Disc is manufactured in accordance to strict OEM specifications for performance and durability. Sachs manufactures clutches for many leading European automakers and guarantees the same high quality in its aftermarket clutch kits.

Product Features:

• OE Quality and direct fit application.
• Original Equipment Supplier

The Sachs Clutch Disc is manufactured in accordance to strict OEM specifications for performance and durability. Sachs manufactures clutches for many leading European automakers and guarantees the same high quality in its aftermarket clutch kits.

Product Features:

• OE Quality and direct fit application.
• Original Equipment Supplier

The Sachs Clutch Disc is manufactured in accordance to strict OEM specifications for performance and durability. Sachs manufactures clutches for many leading European automakers and guarantees the same high quality in its aftermarket clutch kits.

Product Features:

• OE Quality and direct fit application.
• Original Equipment Supplier

The Sachs Clutch Disc is manufactured in accordance to strict OEM specifications for performance and durability. Sachs manufactures clutches for many leading European automakers and guarantees the same high quality in its aftermarket clutch kits.

Product Features:

• OE Quality and direct fit application.
• Original Equipment Supplier

The Sachs Clutch Disc is manufactured in accordance to strict OEM specifications for performance and durability. Sachs manufactures clutches for many leading European automakers and guarantees the same high quality in its aftermarket clutch kits.

Product Features:

• OE Quality and direct fit application.
• Original Equipment Supplier

The Sachs Clutch Disc is manufactured in accordance to strict OEM specifications for performance and durability. Sachs manufactures clutches for many leading European automakers and guarantees the same high quality in its aftermarket clutch kits.

Product Features:

• OE Quality and direct fit application.
• Original Equipment Supplier

The Nachi pilot bearing is manufactured in accordance to strict OEM specifications for performance and durability.

Product Features:

• OEM supplier of clutch pilot bearings for Acura and Honda
• Adopted original seal design to prevent contamination and grease leakage
• Contains special grease for wider temperature ranges and longer life
• Smooth and quiet operation
• Lower rotating torque by improving seal lips
• Compact design for lightweight to achieve high performance

The Original Equipment pilot bearing is manufactured in accordance to strict OEM specifications for performance and durability. The Original Equipment pilot bearing is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE Quality and direct fit application
• Original Equipment Supplier
• Sealed for life with high performance, application-specific grease
• High axial load carrying capacity

The Original Equipment pilot bearing is manufactured in accordance to strict OEM specifications for performance and durability. The Original Equipment pilot bearing is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE Quality and direct fit application
• Original Equipment Supplier
• Sealed for life with high performance, application-specific grease
• High axial load carrying capacity

The INA Generator Bearing is an ideal high quality aftermarket replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:

• Premium aftermarket replacement
• Provides performance and dependability
• Manufactured to meet OE specifications

Original Equipment ring gears are manufactured from high tensile strength steel to withstand thousands of revolution cycles, and are specially machined to prevent heat and stress cracks. The Original Equipment ring gear is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE quality
• Fit and function like the original parts
• Constructed from a high tensile strength material
• Resists elongation and cracking

Original Equipment ring gears are manufactured from high tensile strength steel to withstand thousands of revolution cycles, and are specially machined to prevent heat and stress cracks. The Original Equipment ring gear is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE quality
• Fit and function like the original parts
• Constructed from a high tensile strength material
• Resists elongation and cracking

Original Equipment ring gears are manufactured from high tensile strength steel to withstand thousands of revolution cycles, and are specially machined to prevent heat and stress cracks. The Original Equipment ring gear is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• OE quality
• Fit and function like the original parts
• Constructed from a high tensile strength material
• Resists elongation and cracking