Wavetrac ATB LSD diff, FIAT C645 – 6 Speed TCT Alfa 4C

Wavetrac Limited-Slip Differential
FIAT C645 – 6 Speed TCT Alfa 4C

Wavetrac differential lock

For rear-wheel-drive vehicles, a limited-slip differential is, according to many of our customers, the best and first modification you should make, even though it is a significant investment. The impact on drivability, traction, and overall performance is substantial, making the car significantly more predictable and easier to control.

Installing an LSD benefits both all-wheel-drive and rear-wheel-drive models, though it is most essential for the latter. With an open differential or a lightly locking stock unit, the car tends to spin its wheels unpredictably, causing inconsistent handling.

Torsen-type differentials operate silently and integrate well with factory traction control systems. They are maintenance-free, come with a lifetime warranty, and perform their job seamlessly. Wavetrac represents the latest technology in this category and is uniquely designed to handle zero-traction situations. Always reliable locking!

Wavetrac LSD – Delivered or Installed.

INSTALLED: If you wish, we can install the differential at our workshop in Vantaa. Just bring your car in for a turn-key project.

DELIVERED: We ship the unit to you, hassle-free and with affordable shipping cost!

Technology – How does Wavetrac work?

Wavetrac has long been the number one choice among our customers, representing the latest technology in the industry. At its core, Wavetrac is a gear-type limited-slip differential utilizing the Torsen principle. Unlike competitors, its patented preload mechanism ensures that the feared “zero-traction” situation never occurs, meaning the differential will always lock predictably without surprises.

Lifetime warranty, virtually indestructible locking mechanism

Complete ready-to-install differential unit with Wavetrac, assembled with new bearings and seals

Patented Wavetrac mechanism ensures locking even in challenging conditions

Silent and seamless operation, no drawbacks for daily driving and normal use

Compatible with the car’s original traction control system

Is this Wavetrac differential right for my car?

Our customer service team is happy to help you select the correct product if you are unsure. Send us your vehicle’s VIN, and we will check compatibility for you.

Alternatively, you can place an order directly and include your VIN in the order notes—we manually review all orders and will contact you if needed.

If you are uncertain, please ask! Some differentials are made to order and may not be eligible for return or exchange if ordered incorrectly.

How Wavetrac works, video:

This differential may fit the following models:

FIAT C645 – 6 Speed TCT Alfa 4C