QT Parts is a Finnish online store.

Our warehouse is located in Nokia, Finland.

You can collect your order directly from us if needed. Simply select “Pickup” at checkout.

Pay securely with multiple payment methods, including invoice and installment plans through Klarna.

The delivery time for products in stock is 1-5 business days. We ship worldwide.

If the product is not in stock and it is a pre order product, the average delivery time is 5-21 business days. If the product has a longer delivery time than previously announced, we will be in touch. International orders may be subject to VAT, import duties, and customs fees upon arrival in the destination country.

Terms for product returns:

• You must return the ordered products within 14 days of receiving
• The products must be unused and without damages
• Commission fee for handling returns is 21,90€
• For product returns, the customer is in charge of the return costs. Only door to door service (Express)
• Shipping costs are not refunded

For international orders sales are final and non-refundable. Once an order is placed, it cannot be canceled or returned. By placing an order, you acknowledge and agree to these terms.

Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.

Pre order / made-to-order products

If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.

If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.

This condition applies to the following product categories:

• Suspension
• Engine Tuning
• Engine Parts
• Exhaust Systems
• Fueling
• Turbochargers/superchargers
• Drivetrain
• ECE-approved Downpipes

All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.

In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.

Quaife ATB Differential

The Quaife differential is a high-performance, direct replacement for the original factory differential. Providing uncompromising grip, drivetrain control, and handling, the Quaife ATB is an excellent upgrade for both street and track cars.

Key Features

Seamless and Progressive Power Transfer

Unlike traditional plate-type LSDs, the Quaife ATB utilizes a helical gear-based design, allowing for smooth and consistent torque distribution without harsh mechanical locking.

Its unique operating principle transfers power smoothly and controllably, ensuring the car's behavior remains predictable and intuitive in all driving situations – regardless of the driver's experience level.

Excellent Grip and Driving Stability

The Quaife ATB automatically distributes torque to the wheel with better traction. This significantly reduces wheel spin, improves acceleration on straightaways, and increases vehicle stability during cornering.

In track use, the benefits are seen in improved acceleration and faster lap times. In road driving, the car's handling, grip, and acceleration are enhanced, especially in situations where there is a significant difference in traction between the drive wheels.

Low Maintenance and Long Lifespan

Manufactured from premium Corus steel blanks, Quaife ATB LSD differentials are designed to ISO 9001 quality standards, ensuring structural durability and reliability even in demanding use.

The design has no wearing friction plates or clutches, making the differential practically maintenance-free. It does not require special oils or regular service procedures. This makes it an excellent solution for both professional workshops and performance-minded customers.

Strong Motorsport Heritage and Versatility

Trusted by major car manufacturers and race teams, the Quaife ATB differential is used in numerous demanding applications, from Formula 1 to Rallycross.

The Quaife ATB works seamlessly with the car's stability control and traction control systems, making it ideally suited for modern, electronically controlled vehicles.

Quaife ATB LSD differentials have a long and impressive history in various motorsports. They are perfectly suited for high-performance cars such as the Lamborghini Huracán, Audi R8, McLaren, and Nissan GT-R R35.

The Quaife ATB offers a significant performance upgrade for a wide range of uses, from active street driving to demanding track and competition use.