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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
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Description
Wavetrac Rear Differential 01R B5 B6 B7 Audi A4 S4 Quattro & B5 RS4Wavetrac diffs are state of the art helical gear differentials designed, developed, and manufactured in the USA by Autotech Driveline. The Wavetrac Audi A4 & S4 Quattro Differential is the only torque biasing differential on the market with patent pending technology that mitigates wheelspin when an unloaded wheel condition arises. During zero axle load conditions, the Wavetrac cam device acts to create internal load, maintaining drive on the gripping
Wavetrac diffs are state-of-the-art helical gear differentials designed, developed, and manufactured in the USA by Autotech Driveline. The Wavetrac Audi A4 & S4 Quattro Differential is the only torque biasing differential on the market with patent-pending technology that mitigates wheelspin when an unloaded wheel condition arises. During zero axle load conditions, the Wavetrac cam device acts to create internal load, maintaining drive on the gripping wheel instead of acting like an open diff (and going nowhere!). Super strong 9310 alloy steel gears are enclosed in case-hardened steel bodies, held together with ARP fasteners. All Wavetrac rear differentials include a transferable, Limited Lifetime Warranty.
*Includes bearing spacer for small end side of the differential, only needed on some models
Note: Fits: Audi Rear A4 S4 RS4 (B5) Quattro Audi Rear A4 S4 (B6/B7) Quattro (not B7 RS4)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 4
Cool not cold
Color: Light Gray, Size: Queen
Super silky like material. Comfy and fits pillow perfectly. Wish it could be a more cold then cool.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 3
It’s ok could be cooler
Color: Light Gray, Size: Queen
Decent — could be cooler. They’re a nice color and texture. It fit my pillows well no annoying zippers it’s nice to sleep on and stay in place.
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Reviewed in the United States on March 8, 2026
★★★★★ 5
Comfort
Color: Champagne, Size: Queen
What a lifesaver, great feel, and awesome cooling feel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Cool bedding
Color: Champagne, Size: Queen
As advertised nice and soft. But most of all cool. It really stays cool, especially on warm nights. A.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Actually cooling and comfortable.
Color: Royal Blue, Size: King
Incredible cases. Soft, super comfortable and actually cooling as claimed. Highly recommended. Love these!
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Reviewed in the United States on May 18, 2026
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