BMW E30 E36 PU Hardyscheibe LK78/10 mm

PU Flex Disc / Guibo for BMW E30 E36 E46 E39

Motorsport-grade coupler for high-performance BMWs

This reinforced PU flex disc replaces the factory rubber guibo (OEM #26111225624) and is specifically engineered for increased power, aggressive driving, and motorsport use. It fits vehicles with a 78 mm bolt circle and M10 bolts.

Technical Highlights:

• Material: CNC-machined T6061-T6 aluminum
• Bushings: Press-fit polyurethane, Shore hardness 85A
• Bolt circle: 78 mm
• Bolt holes: For M10 hardware
• OEM reference: 26111225624
• Lightweight, torsionally stiff construction

Advantages over OEM rubber guibo:

• Greater torque resistance under load
• Sharper throttle response
• Reduced wear on drivetrain components
• Improved traction for turbo, supercharged, or LSD builds
• Simple installation using stock hardware

Vehicle compatibility:

Fits all BMWs with 78 mm bolt circle and M10 bolts, including:

• BMW E21: 1977–1983 320i
• BMW E28: 1983–1988 528e (manual & automatic)
• BMW E30: 318i, 318is, 318ic, 325e, 325es (until 04/1986), 325i, 325is, 325ic, 325ix
• BMW E36: 318i, 318is, 318ic (automatic only)
• BMW E39 and E46: with 78 mm BC and M10 bolts
• BMW Z3: 1996–1998 1.9L Roadster (automatic only)

Usage notes:

Designed for motorsport and high-performance applications. Some increase in NVH (noise, vibration, harshness) is expected, especially with solid engine or transmission mounts. Not recommended for stock daily drivers prioritizing comfort.

Installation tips:

• Align bushings correctly for torque transfer
• Tighten M10 bolts to OEM torque specs
• Inspect regularly when used in competitive environments

Application examples:

• E30 with turbocharged M20 or S52 swap
• E36 auto with supercharger kit
• E46 325i track build with polyurethane mounts
• Z3 drift car with rigid drivetrain setup

Package contents:

• 1x PU Flex Disc (pre-assembled, bolts not included)
• Securely packed with label and protection

Conclusion:

The ideal solution for performance enthusiasts, racers, and tuners who demand a reliable, stiffer, and longer-lasting alternative to OEM rubber flex discs.