★★★★★ 5
excellent product
Size: 1.9" x 9.9" x 11.4"
easy to install
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Reviewed in the United States on March 21, 2026
SPA TURBO Forged piston set 81,5mm 1.8L 20V VW/AUDI
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
SPA TURBO Forged piston set 81,5mm 1.8L 20V VW/AUDIFor VW AUDI 1. 8 20V engines Nominal bore diameter: 81,5mm (increase engine displacement to 1802cc) Recommended bore to piston to bore clearance: 0. 08mm (For nitrous or extreme applications, consult your builder) Piston ring grooves: 1. 5 mm 1. 5 mm 2. 0mm Compression height: 32. 70mm. Dish volume: 7cc Compression ratio: 8. 5: 1 Pin offset: 1. 10mm. Material: Forged aluminum 4032 T6. Average piston weight (unit, without pin): 325,7g (11. 4 oz). Rated
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4.9 ★★★★★
Based on 2248 reviews
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Product Reviews
★★★★★ 5
Great purchase!
Size: 1.9" x 9.9" x 11.4"
This has worked out quite well. I have had it since 2023 and have been cleaned thru about 6 maintenance schedules. It's been 2 yrs and it's in great shape. Worth every penny.
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Reviewed in the United States on December 21, 2025
★★★★★ 4
Really filters the cabin air
Size: 1.9" x 9.9" x 11.4"
K&N filters are always a cut above. Can’t say the same for service/support after the sale.
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Reviewed in the United States on March 31, 2026
★★★★★ 5
quick and easy fit
Size: 1.9" x 9.9" x 11.4"
Instructions made it a very quick and easy fit
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Nice air filter
Replaced my K&N filter with this KAX filter. Same performance and better mileage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2024
