Flex Joint

A flex joint, also known as a flex disc or guibo (especially in German cars), is a flexible coupling typically made of reinforced rubber. It is used in the drivetrain to connect components like the driveshaft to the transmission or differential, allowing for slight flex and movement while still transferring rotational power.

• Absorbs vibrations and shocks from the drivetrain.
• Reduces noise and harshness during power transfer.
• Allows slight misalignment between drivetrain components.
• Helps ensure smoother rotation between the engine, transmission, and driveshaft.

Flex joints (also known as flexible couplings or bushings) allow controlled movement between suspension or drivetrain components, helping absorb vibration and misalignment. Here are the main types:

• Most common type.
• Absorbs vibration and noise.
• Low cost, used in suspension arms and mounts.

• Stiffer than rubber.
• Improves handling and durability.
• Ideal for performance applications.

• Spherical bearing with high flexibility and precision.
• Common in racing and off-road setups.
• Requires regular maintenance.

• Combines flex and strength.
• Used in heavy-duty suspension systems (like Jeeps).
• Allows greater articulation than bushings.

• Allows multi-directional movement.
• Used in advanced suspension or steering setups.

• Found in front-wheel drive and independent suspension.
• Maintains smooth power delivery at various angles.