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Wiseco 4125H Pro Tru Hastings Plasma-Moly Piston Ring Set 4.125 in. Bore

(Ford F-150 1975-96, Mustang 1968-95, F-250 1975-97, Bronco 1968-96, F-350 1975-80, 1983-97, Maverick 1971-77, Galaxie 500 1968-72 + 124 more models)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

4125H
10 reviews
Sale Price

$21.99

Estimated ship date Saturday, November 21

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Fitment guaranteed

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Product Details

The Wiseco 4125H Pro Tru Hastings Piston Ring Set is a race-quality replacement ring set designed for a single piston with a 4.125-inch bore. Featuring high-tensile plasma-moly facing, these rings are engineered to deliver superior combustion sealing, reduced friction, and improved heat transfer — making them an ideal choice for performance engine builds.

This set is pre-gapped and ready to install, designed specifically as a replacement ring set for Wiseco Pro Tru pistons. The plasma-moly top ring coating provides excellent wear resistance and break-in characteristics, while the three-ring configuration ensures reliable oil control and compression retention across a wide range of performance applications.

Specifications:

  • Bore Size: 4.125 in.
  • Top Ring Thickness: 1/16 in. — Plasma-Moly Faced
  • Second Ring Thickness: 1/16 in.
  • Oil Ring Thickness: 3/16 in.
  • Ring Style: Pre-Gapped
  • Quantity: One complete set (fits one piston)

Important: This ring set fits one piston only. Order the quantity matching your engine's cylinder count.

Products specifications

Fits

Ford F-150 1975-96, Mustang 1968-95, F-250 1975-97, Bronco 1968-96, F-350 1975-80, 1983-97, Maverick 1971-77, Galaxie 500 1968-72, F-100 1975-83, F-250 Pickup 1972-74, Fairlane 1968-70, Ranchero 1968-79, Torino 1968-74 + 119 more models

2nd Ring

1/16 Cast

Bore

4.125

Bore (in)

4.125 in.

Bore (mm)

104.775mm

File Fit

No

Gapless

No

Notes

Single piston set.

Oil Ring

3/16 3-Piece Std Tension

Oil Ring Included

Yes

Oil Ring Material

Stainless steel

Oil Ring Tension

Standard

Oil Ring Thickness

3/16 in.

Quantity

Sold as a set.

Second Ring Facing Material

Cast iron

Second Ring Included

Yes

Second Ring Material

Cast iron

Second Ring Thickness

1/16 in.

Size

.062-.062-.187

Top Ring

1/16 Hi-Tensile Plasma

Top Ring Facing Material

Plasma-moly

Top Ring Included

Yes

Top Ring Material

Iron

Top Ring Thickness

1/16 in.

Shipped fast and accuratly within a week.

Best price I've seen online and the shipping is extremely fast. I would definitely use this site again for future automobile needs.

very prompt service,items were in stock and shipped next day,salesman was helpful and friendly.Will place in favorites and do buisness with again.

Great product. Fast shipping. Great seller. Thanks again.

These guys are awesome. I placed my order and shipped out asap. Live inventory is amazing. All the parts I needed were in stock and shipped to me.

Awesome price on a name brand part. Good communication too. Many payment plans and you can use your PayPal !!

Fast and easy ordering.

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