SKU: 79837774245

Forged Pistons Wossner Audi A6 S4 B5 2.7L Bi-Turbo 81.50MM 8.50:1

Sale price$597.28 Regular price$663.65
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

Forged Pistons Wossner Audi A6 S4 B5 2.7L Bi-Turbo 81.50MM 8.50:1Wossner pistons are made from dedicated forgings produced in house to give you a light weight piston with superior strength and optimal design. Being the multivalve piston technology leader, the line features specially designed valve pockets, complex dome and crown shapes, the steel nitride napier xx rings and optimized skirt profiles. Most OEM pistons have pin offset to keep the piston quiet. Only Wiseco does this with forged pistons. Complete with

Wossner pistons are made from dedicated forgings produced in-house to give you a light weight piston with superior strength and optimal design.

Being the multivalve piston technology leader, the line features specially designed valve pockets, complex dome and crown shapes, the steel nitride/napier xx rings and optimized skirt profiles.

Most OEM pistons have pin offset to keep the piston quiet. Only Wiseco does this with forged pistons.

Complete with rings, wristpins & locks, and specification sheets.

Product detailed specification

Bore size

81.50MM

Stroke

86.40mm

Wossner compression ratio (CR)

8.50:1

Rod Lgth.

154.00

Dome volume (CC)

 -9.60

Comp Ht.

  30.70mm

Pin diameter

   21mm

Fits for

 Audi A6 S4 B52.7L Bi-Turbo

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 79837774245

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4.7 ★★★★★
Based on 11 reviews
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Mar Gee
Natrona Heights, US
★★★★★ 5
Style and comfort
Size: Medium, Color: Black
Exactly what I was looking for. Style and sock thickness and comfort.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
Comfortable
Size: Medium, Color: Blue
So comfortable! They stay up perfectly love love love
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Reviewed in the United States on December 7, 2025
L
Verified Purchase
Lynn Keeling
Charlottesville, US
★★★★★ 5
Excellent fit, do not slip
Color: Matte Black, Size: Large
Socks fit well because of excellent design, work with good shoes and tennis shoes
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Reviewed in the United States on May 27, 2026
A
Verified Purchase
AZ Critic
Pawtucket, US
★★★★★ 5
Expensive...BUT....you get what you pay for!
Color: Matte Black, Size: Large
I can't believe I just spent $50 on 4 pairs of socks....BUT..... I have to admit, they are amazing. They fit perfectly, are comfortable and stay on and in place. They are no-show which is just what I wanted. For reference, I'm a 10.5-11 in women's shoe and I got the Large. My one and only complaint is the price....I wish they were a little more affordable.
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Reviewed in the United States on February 2, 2026
P
Verified Purchase
Peggy
Port Orchard, US
★★★★★ 5
Worth the Price
Color: Matte Black, Size: Medium
At first, I was unsure because of the price, but wow—I was wrong. These worked perfectly with my loafers and flats. They stayed in place and fit comfortably all day. The only downside is the logo on the back, but overall I really like these socks.
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Reviewed in the United States on May 6, 2026

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