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MAHLE 929114709 Forged 4032 Piston Kit 81.50mm Bore 12.4:1 CR Dome 9.1cc

Manufacturer

Picture for manufacturer MAHLE

Part Number

929114709
9 reviews
Sale Price

$576.80

In Stock (9)

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Usually delivered within 2 days

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Product Details

The MAHLE 929114709 is a motorsport-grade forged piston kit featuring a 81.50mm bore (+0.50mm oversize), 12.4:1 compression ratio, and a domed 9.1cc crown. Engineered for the Acura/Honda B18C1 DOHC VTEC 1.8L engine platform, this kit delivers the precision and durability demanded by high-performance street and race builds.

Kit Includes:

  • 21mm high-quality steel wrist pins (98g each)
  • Performance ring set: 1.0mm, 1.2mm, 2.8mm steel nitrided top ring
  • Race-proven round wire locks

Piston Specifications:

  • Bore: 81.50mm (+0.50mm oversize)
  • Compression Height: 30mm
  • Stroke: 87.2mm
  • Rod Length: 137.9mm
  • Wrist Pin Diameter: 21mm
  • Crown Volume: 9.1cc dome
  • Piston Weight: 312g
  • Compression Ratio: 12.4:1
  • Alloy: 4032 low-expansion aluminum

Key Features:

  • Forged from 4032 low-expansion aluminum alloy for high strength and tighter piston-to-wall clearance
  • Proprietary Grafal anti-friction skirt coating reduces drag, scuffing, and cylinder bore wear
  • Dry phosphate coating on pin bores and ring grooves protects against galling and micro-welding during startup and break-in
  • Forced pin oiling system for increased wrist pin lubrication
  • CNC precision-machined pin bores for consistent shape, size, and alignment
  • Fully machined, machinable crown for further compression ratio tuning

MAHLE PowerPak piston kits are designed as complete, ready-to-install forged piston assemblies backed by over 100 years of motorsport heritage, including championships in Formula 1, Le Mans, and NASCAR.

Products specifications

Piston Ring Thickness

1.0mm, 1.2mm, 2.8mm

Clips Included

Yes

Pins Included

Yes

Piston Style

Dome, With 4 valve reliefs

Crown Vol

9.1cc

Pin Style

Floating

Piston Material

Forged, 4032

Rings Included

Yes

Piston Kit Quantity

Sold as a set of 4

Pin Diameter

21mm

Piston Mass

312g

Coatings

Phosphate plus Grafal

Clip Style

Round Wire

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Pin Material

Steel

Easy description and part numbers

great price.

I've been looking for this item to protect my Dixon high pressure gauge and hope it fit.

I found what I was looking for from a large selection at a great price, need I say more?

You had the item I wanted and at a price that was the best.

I ordered the same part about a month ago, got a RA number as the wrong part popped up for my search, and again it did this time. I sent the item back requesting the correct item be sent to me, as of today, I have received a refund but no new part, which is why I am ordering today. The correct part should have been expedited to me at your cost due to your websites short comings. Not good customer service, that no one responded back about my request for the item to be resent correctly.

Easy and safe

Quick and easy to order

The order didn't go through the first time so I had to add my credit card information twice, so I hope I only get 1 order and not duplicates. Thanks

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