Multi-variant Ramp Set for Alfa Romeo ZF LSD - Alfa Romeo 75 (105/115 gearbox)

Designed for ZF clutch-type limited slip differentials used in:

• Opel Manta
• Opel Ascona
• Opel Kadett C
• Opel Omega A
• Opel Vectra A

The RacingDiffs Multi-Variant Ramp Set provides three different ramp angle positions:

• 30° / 30°
• 30° / 60°
• 50° / 65°

These combinations allow you to adjust the differential from approximately 25% up to 100% lock in 2-way or 1.5-way configurations, depending on your setup requirements.

• Adjustable ramp angles for tuning lock speed and lock intensity.
• Forged construction for maximum strength and durability.
• High-precision CNC machining for accurate fitment.
• Chemically heat-treated for increased wear resistance.
• Plug-and-play installation with no modifications required.

By changing the ramp angle setup, you control how quickly and how aggressively the limited slip differential locks.

• Improved traction during acceleration
• Better corner entry and exit stability
• Adaptable setup for different racing disciplines
• No need for multiple differentials

• Ultimate LSD tuning upgrade for Opel ZF differentials.
• Perfect companion to RacingDiffs Performance Clutch Sets.
• Track-ready design for racing, rally, hill climb and drifting.
• Forged and heat-treated construction for long service life.

Watch our video explaining the LSD ramp angle concept and how it influences differential locking behavior.

Watch the Ramp Angle Explanation Video