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1957-1971 Lotus MK1 Lotus Cortina Super Seven (For rear differential)
Traction Concepts LSD Conversion for OEM Factory differentials from Lotus MK1 Lotus Cortina Super Seven
 
Our Price: $379.95


Product Code: TCXLT4212

Description
 
This custom Traction Concepts LSD Conversion is designed for the rear OEM factory differential from 1957-1971 Lotus Mk1 Cortina Seven, Super Seven, street- and race-ready.
Traction Concepts Limited Slip Conversion Kit installs into your non-LSD open differential, converting it into a proven, competitive limited-slip differential that enhances traction. Traction Concepts 1.5-way LSD will considerably improve handling in daily-driven street-strip warriors or full-race vehicles. All Traction Concepts products are constructed from only the highest-quality, hand-selected materials. With three decades of rigorous professional performance testing (street, drag racing, rally racing, hill climb, driving on dirt trails, skid pad testing, and testing in rain and snow, drift, and more), we have fine-tuned each application through specific heat-treating and Rockwell testing to achieve maximum performance and reliability. Each Traction Concepts LSD Kit is assembled with pressure-tested matched sets of progressive-rate springs to achieve equal load distribution to the disc plates, which dramatically enhances reliability and performance. With such a passion for perfection, Traction Concepts is confident that when you choose our TC Limited Slip Conversion Kit, you are choosing, by far, the best limited slip conversion kit on the market.
Improve Handling * Corner Faster * Tow Easier * Accelerate Quicker * Better Traction * Eliminate Torque Steer*
Traction Concepts LSD Conversions are predictable, durable, and come with a Limited Lifetime Warranty against manufacturer defects. 'Disclaimer of Warranty'---WARNING: Installation of any Traction Concepts component should be performed by persons experienced in the installation and proper operation of transmission and drivetrain products. Purchasers expressly affirm they are relying upon their own skill and judgment to select, purchase, and install aftermarket performance parts from Traction Concepts. Warranties are voided for incorrect installation or modifications to Traction Concepts products. With such a passion for perfection, we are confident that when you choose a Traction Concepts product, you are choosing, by far, the best limited-slip conversion kit on the market.
How to Install a Traction Concepts LSD Conversion Kit, Step-by-Step Guide for FWD & RWD Cars
Features and Facts
  • Traction Concepts LSD Conversions convert your factory open differential into a true limited-slip system
  • Proven in performance, Traction Concepts improves traction, handling and the vehicle's overall stability during acceleration and cornering.
  • Designed and manufactured by Traction Concepts – the original LSD Conversion team (since 1996)
  • Smooth, quiet engagement — no chatter or noise, makes Traction Concepts the superior choice in Limited Slip Conversion Kits
  • Dominate on the drag strip with Traction Concepts Full Race LSD Conversion that improves 0–60', 1/8, and 1/4 mile times with consistent launches. FWD, AWD, RWD applications.
  • Ideal for both daily driving and competitive performance use, Traction Concepts is the bang for the buck.
  • Designed specific for OEM differentials, Traction Concepts keeps up with modern performance needs for gas powered, and EV powered vehicles.
  • No special tools or gearbox modifications required for installation of Traction Concepts Limited Slip Conversions.
  • Proven in excellence, Traction Concepts products are durable, long-lasting, and race-proven reliability.
  • Custom-engineered per differential types. Don't see your model? Contact Traction Concepts

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 1 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 Great product and excellent support Thursday, September 24, 2026
Reviewer: Mike Breakey from Chattanooga, TN United States  
I already have one Traction Concepts unit installed in the 5.4 rear end of my Lotus Seven, and it has worked great through three season of hillclimbs. Based on the first unit, I recently purchased this for a 4.4 rear end I am building. Just as impressive as the product is the communication. Traction Concepts provides a simple measurement form to verify the differential dimensions and follows up to make sure you are ordering, and receiving, the correct unit for your application. Great product, excellent communication, and very easy to work with.

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