SKU: 85531231103

Forged piston set 81mm 1.8L 20V VW/AUDI

$314.95 $349.95
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Description

Forged piston set 81mm 1.8L 20V VW/AUDIFor VW AUDI 1. 8 20V engines Nominal bore diameter: 81mm (increase engine displacement to 1780cc) 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): 318,66g (11. 2 oz). Rated

For VW/AUDI 1.8 20V engines


Nominal bore diameter: 81mm (increase engine displacement to 1780cc)

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): 318,66g (11.2 oz).

Rated for 1000hp.

Innovative high performance piston skirt design that provides:

1. Smaller piston to bore clearance‚

2. Less noise

3. Better ring seal

4. Higher power

5. Durability


Features:

Anti detonation grooves: protect the top ring by disrupting detonation waves and reduce piston-cylinder contact in high temperatures and engine RPM conditions.

Accumulator groove: accumulates residual combustion gasses reducing top ring flutter and improving seal.

Pin oil lubrication by broaches and oiler to reduce friction and increase durability.


Super A Piston Pin (63.45mm) - 4pcs set

For VW 827 engines (Super A pistons)

Dimensions: 63.45mm x 20mm (length x O.D.)

Average unit weight: 116g (4.09 oz)

Rated for 1.000hp

Made from special steel alloys that combines optimal mass with high resistance.

‚

Piston‚ Rings 81mm SPA DLC series

Specifications:

1º ring 1.5mm Made from carbon steel, which is 35% stronger than cast iron and about 30% lighter. DLC treated, which is the application of carbon particles, that provides higher resistance and lower friction.

2° ring 1.5mm Made from cast iron.

3º ring 2.0mm Made by 3 parts, providing easy handling, better oil film stability and improvement in oil removal by the lubrication holes due to its optimized design.

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        Exchange/Return Notes
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        SKU: 85531231103

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        4.0 ★★★★★
        Based on 1094 reviews
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        J
        Verified Purchase
        Jim
        Lowell, US
        ★★★★★ 5
        Fixed a Bead Sealing Issue
        Size: 1-Gallon (128 oz)
        For traction in snow, I recently installed new "agricultural" style lugged front tires on a Simplicity garden tractor from around 1980. The tractor looks like it's survived a war, evidently having had a hard life as a workhorse owned by a school district. The front rims are rusty, and I naively thought the beads of these thick tires would seal properly anyway. They didn't. The jug of sealant ships with a valve core removal tool. Removing and reinstalling the cores is a piece of cake if you've never done it. I pumped a generous amount of the product into each tire and then did a few fast laps in a grassy paddock. It's a Kohler 19HP twin and it's a bit of a rocket. 😎 One tire sealed, the other didn't, and there was still a faint hiss. I added more product to that side and repeated the process. It seemed to hold. The next day that side was flat again, so I added more sealant and this time it held. Based on this experience, I'd say that instead of strictly following what the instructions recommended as an amount per tire, keep adding product in increments until the tire holds air. It's good stuff and it works. Will the tire self-heal if I puncture it? I don't know yet. It saved me the headache of having to remount these small tires or install tubes.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on May 24, 2026
        S
        Verified Purchase
        shimshong
        Louisville, US
        ★★★★★ 5
        Stop wasting your money on green slime or Fix-A-Flat or any of the other tire sealant
        Size: 1-Gallon (128 oz)
        Flat out is by far the best product on the market to fix flat tires and prevent flat tires. This will be the second gallon jug that I purchased that stuff on everything. all of my landscape equipment has it in every tire. And to paint and even better picture for you I have a scag mower that is 20 years old The tires are probably 18 years old ugly as could be and would not hold air until I put the flat out in it it has been sitting now for over a year and every tire still has air That's how good the stuff is. Don't just buy one gallon by two cuz it will get used
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on July 11, 2025
        A
        Verified Purchase
        Amazon Customer
        San Leandro, US
        ★★★★★ 5
        John Deere 5x4 (gator)
        Size: 4-Pack (128 oz), Size: 4-Pack (128 oz)
        Excellent product. The John Deere 5x4 (Gator) in picture sat for ten years, the tires were flat, the front tire was the worse. To move this Gator from my neighbors place he had to load it on a trailer, he aired up the rear 4 tires but the front would air up and leak before he could move it. He put a make do wheel to get it moved to my place. shortly after unloading the rear 4 tires went flat. All were badly weathered. I read about a stop leak "FLATOUT" I ordered one bottle and put it in the front wheel and I aired it up, it held air for several hours. I called FLATOUT Support and told them I put 1/2 bottle in front tire and how it helped, He said it calls for a full bottle per tire so I added the rest of the FLATOUT. I bought four more bottles of FLATOUT and put those in all 4 tires, put air in and drove the unit a block. next day two tires were low so I finished putting FLATOUT in and aired the tires and drove two to three blocks. the weather snowed so I parked the Gator for two weeks, the tires never went flat. I checked the air pressure and had lost about 2-3 pounds, refilled with air and on a warm day drove the Gator about 2 miles. No flat tires. Note the front tire had a weathered crack 4 inches long where it sat folded for so many years and I saw where this product had sealed this leak and no air loss after two weeks of sitting.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on April 7, 2021
        R
        Verified Purchase
        Rachel
        Cuba, US
        ★★★★★ 5
        Great tool
        Size: 14" Chrome
        This tool worked great. Super strong and easy to use. Super happy with the quality for the price.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on November 24, 2025
        H
        Verified Purchase
        Houston Dynamo
        Belleville, US
        ★★★★★ 5
        Perfect
        Size: 14" Chrome
        Great item
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on May 23, 2026

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