1971-79 Beetle 1302/1303 IRS Blackline Limited Slip Differential, 33 Spline
£599.99inc 20% VAT
Description
VW Beetle 1302/1303 Helical LSD
Helical LSD Advantages
Equal rotational speed delivered to both wheels
Torque distributed according to available traction
Minimal maintenance required – no clutch packs
Faster response than viscous limited-slip differentials
Smooth, progressive engagement with low noise levels
Controlled power delivery suitable for spirited driving and drifting
Gears and housing manufactured from high-strength 8620 alloy steel
Direct replacement for the standard differential
How the Helical LSD Works
This helical limited-slip differential is a torque-biasing design that actively distributes drive to the wheel with the greatest traction, significantly improving performance and drivability—particularly in low-grip conditions.
Torque applied through the helical gear system generates axial thrust, forcing the gears against the differential casing and creating internal friction. As torque increases, this thrust force rises proportionally, allowing the LSD to handle substantial traction imbalance, such as when accelerating hard out of corners.
At lower torque levels, the differential operates smoothly and quietly, making it well suited to everyday road use. The unit features a parallel-axis helical gear design, optimised for even load distribution and durability.
With a torque bias ratio of 5:1, the LSD can deliver up to five times more torque to the wheel with grip compared to the slipping wheel. As with all helical LSDs, some traction must be present at both wheels; however, this is rarely an issue in real-world driving. In situations where one wheel is unloaded, techniques such as light left-foot braking can help maintain effective operation.
Please Note: Helical LSDs perform particularly well when used in conjunction with modern anti-lock braking systems (ABS).
Compatibility:
– Beetle 1302/1303 IRS 1971-1979
SKU: 020050020
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